View source for Boeing CH-47 Chinook

{{Short description|American tandem-rotor helicopter introduced in 1962 during the Cold War}}
{{Use dmy dates|date=February 2021}}
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{{Infobox aircraft
 |name = CH-47 Chinook
 |image = CH-47 assigned to 3rd General Support Aviation Battalion, 82nd Combat Aviation Brigade.jpg
 |image_caption = A U.S. Army CH-47F in 2017
 |aircraft_type = [[Military transport helicopter|Transport helicopter]]
 |national_origin = United States
 |manufacturer = [[Boeing Defense, Space & Security]]
 |designer = 
 |first_flight = 21 September 1961
 |introduction = 1962
 |retired = 
 |status = In service
 |primary_user = [[United States Army]]<!--Limit one (1) primary user. Top four users are listed in 'primary user' and 'more users' fields total, based on number in operation. -->
 |more_users = {{nowrap|[[Japan Ground Self-Defense Force]]}} <br />[[Royal Saudi Air Force]] <br />''See [[Boeing CH-47 Chinook#Operators|Operators]] for others'' <!-- Limit TOTAL of THREE (3) "more users" here. Please separate with <br />. British Chinook is covered in [[Boeing Chinook (UK variants)]]. Do not add here. -->
 |produced = 1962–present
 |number_built = Over 1,200 as of 2012<ref>{{cite web |url=http://boeing.mediaroom.com/index.php?s=20295&item=2389 |title=Boeing Marks 50 Years of Delivering Chinook Helicopters |date=16 August 2012 |publisher=Boeing|archive-url=https://web.archive.org/web/20160304204924/http://boeing.mediaroom.com/index.php?s=20295&item=2389 |archive-date=4 March 2016 |url-status=live}}</ref>
 |developed_from = [[Boeing Vertol CH-46 Sea Knight|Vertol Model 107]]
 |variants = [[Boeing Chinook (UK variants)]]
 |developed_into = [[Boeing Vertol BV-347]]
}}

The '''Boeing CH-47 Chinook''' is a [[tandem-rotor helicopter]] originally developed by American rotorcraft company [[Piasecki Helicopter|Vertol]] and now manufactured by [[Boeing Defense, Space & Security]]. The Chinook is a [[Military transport helicopter|heavy-lift helicopter]] that is the second-heaviest lifting Western helicopter to the [[Sikorsky CH-53K King Stallion|Sikorsky CH-53]]. Its name, Chinook, is from the [[Native Americans in the United States|Native American]] [[Chinook people]] of [[Oregon]] and [[Washington (state)|Washington]].

The Chinook was originally designed by [[Vertol]], which had begun work in 1957 on a new tandem-rotor helicopter, designated as the Vertol Model 107 or V-107. Around the same time, the [[United States Department of the Army]] announced its intention to replace the [[Radial engine|piston-engine]]–powered [[Sikorsky CH-37 Mojave]] with a new, [[gas turbine]]–powered helicopter. During June 1958, the U.S. Army ordered a small number of V-107s from Vertol under the ''YHC-1A'' designation; following testing, some Army officials considered it to be too heavy for the assault missions and too light for transport purposes. While the YHC-1A would be improved and adopted by the U.S. Marine Corps as the [[Boeing Vertol CH-46 Sea Knight|CH-46 Sea Knight]], the Army sought a heavier transport helicopter and ordered an enlarged derivative of the V-107 with the Vertol designation Model 114. Initially designated as the ''YCH-1B'', on 21 September 1961, the preproduction rotorcraft performed its [[maiden flight]]. In 1962, the HC-1B was redesignated ''CH-47A'' under the [[1962 United States Tri-Service aircraft designation system]].

The Chinook possesses several means of loading various cargoes, including multiple doors across the fuselage, a wide loading ramp located at the rear of the fuselage, and three external ventral [[cargo hook (helicopter)|cargo hooks]] to carry underslung loads. Capable of a top speed of {{convert|170|kn|mph km/h}}, upon its introduction to service in 1962, the helicopter was considerably faster than contemporary 1960s [[utility helicopter]]s and [[attack helicopter]]s, and is still one of the fastest helicopters in the US inventory. Improved and more powerful versions of the Chinook have also been developed since its introduction; one of the most substantial variants to be produced was the [[CH-47D Chinook|CH-47D]], which first entered service in 1982; improvements from the CH-47C standard included upgraded engines, [[composite material|composite]] rotor blades, a redesigned cockpit to reduce workload, improved and redundant electrical systems and avionics, and the adoption of an advanced flight control system. It remains one of the few aircraft to be developed during the early 1960s – along with the fixed-wing [[Lockheed C-130 Hercules]] cargo aircraft – that has remained in both production and frontline service for over 60 years.

The military version of the helicopter has been exported to nations; the [[United States Army|U.S. Army]] and the [[Royal Air Force]] (see [[Boeing Chinook (UK variants)]]) have been its two largest users. The civilian version of the Chinook is the Boeing Vertol 234. It has been used by civil operators not only for passenger and cargo transport, but also for [[aerial firefighting]] and to support [[logging]], [[construction]], and [[Extraction of petroleum|oil-extraction]] industries.

==Design and development==
[[File:NARA 111-CCV-105-CC65957 CH-47 lifting off from Fire Support Base Challenge with 105 mm howitzer April 1970.jpg|thumb|CH-47 carries a howitzer, 1970]]

===Initial development===
During late 1956, the U.S. Department of the Army announced its intention to replace the [[Sikorsky CH-37 Mojave]], which was powered by [[Radial engine|piston engines]], with a new, [[Gas turbine|gas turbine-powered]] helicopter.<ref name="Tolsonarmy">{{cite book |url=https://www.history.army.mil/html/books/090/90-4/index.html |title= Vietnam Studies: Airmobility 1961–71 |department= Department of the Army |author= Lt General John J. Tolson |year= 1989 |publisher= US Government Printing Office |id= CMH Pub 90-4 |access-date= 19 August 2010 |archive-url= https://web.archive.org/web/20100612073527/http://www.history.army.mil/books/Vietnam/Airmobility/airmobility-fm.html |archive-date= 12 June 2010 |url-status= dead}}</ref> Turbine engines were also a key design feature of the smaller [[Bell UH-1 Iroquois|UH-1 "Huey"]] utility helicopter. Following a design competition, in September 1958, a joint Army–Air Force source selection board recommended that the Army procure the Vertol-built medium-transport helicopter. Funding for full-scale development was not then available, though, and the Army vacillated on its design requirements. Some officials in [[United States Army Aviation Branch|Army Aviation]] thought that the new helicopter should be operated as a light tactical transport aimed at taking over the missions of the old piston-engined [[Piasecki H-21]] and [[Sikorsky H-34]] helicopters, and be consequently capable of carrying about 15 troops (one [[squad]]). Another faction in Army Aviation thought that the new helicopter should be much larger, enabling it to [[airlift]] large [[artillery]] pieces and possess enough internal space to carry the new [[MGM-31 Pershing|MGM-31 "Pershing" missile system]].<ref name="Tolsonarmy"/>

[[File:HC-1B in flight being tested and evaluated.jpg|thumb|left|HC-1B during in-flight evaluation]]
During 1957, Vertol commenced work upon a new tandem-rotor helicopter, designated as the Vertol Model 107 or V-107.<ref name=Apostolo>Apostolo, Giorgio. ''The Illustrated Encyclopedia of Helicopters''. New York: Bonanza Books. 1984. {{ISBN|978-0-517-43935-7}}.</ref><ref name=vect_V-107>Goebel, Greg. {{usurped|1=[https://web.archive.org/web/20120623191825/http://www.vectorsite.net/avch47.html#m1 Origins: Vertol V-107 & V-114]}}. Vectorsite.net, 1 December 2009.</ref> During June 1958, the U.S. Army awarded a contract to Vertol for the acquisition of a small number of the rotorcraft, giving it the ''YHC-1A'' designation.<ref name="whirly">Spenser, Jay P. ''Whirlybirds, A History of the U.S. Helicopter Pioneers''. University of Washington Press, 1998. {{ISBN|0-295-97699-3}}.</ref> As ordered, the YHC-1A possessed the capacity to carry a maximum of 20 troops.<ref name="Tolsonarmy"/> Three underwent testing by the Army for deriving engineering and operational data. However, the YHC-1A was considered by many figures within the Army users to be too heavy for the assault role, while too light for the more general transport role.<ref name="Tolsonarmy"/> Accordingly, a decision was made to procure a heavier transport helicopter, and at the same time, upgrade the UH-1 "Huey" to serve as the needed tactical troop transport. The YHC-1A would be improved and adopted by the Marines as the [[Boeing Vertol CH-46 Sea Knight|CH-46 Sea Knight]] in 1962.<ref>{{cite news |url= https://pqasb.pqarchiver.com/latimes/access/454317782.html?dids=454317782:454317782&FMT=ABS&FMTS=ABS:AI&type=historic&date=Oct+26%2C+1962&author=&pub=Los+Angeles+Times&desc=The+Quiet+Americans--Our+Marines+Overseas&pqatl=google |title= The Quiet Americans-Our Marines Overseas |first= Alexander |last= Holmes |work= Los Angeles Times |date= 26 October 1962 |access-date= 5 July 2017 |archive-url= https://web.archive.org/web/20121026080022/http://pqasb.pqarchiver.com/latimes/access/454317782.html?dids=454317782:454317782&FMT=ABS&FMTS=ABS:AI&type=historic&date=Oct+26,+1962&author=&pub=Los+Angeles+Times&desc=The+Quiet+Americans--Our+Marines+Overseas&pqatl=google |archive-date= 26 October 2012 |url-status= dead}}</ref> As a result, the Army issued a new order to Vertol for an enlarged derivative of the V-107, known by internal company designation as the Model 114, which it gave the designation of HC-1B.<ref>{{cite web |url= http://www.flightglobal.com/articles/2008/04/01/222553/chinook-five-decades-of-development.html |title= Chinook: Five decades of development |first= Graham |last= Warwick |work= Flight International |date= 1 April 2008 |access-date= 29 March 2010 |archive-url= https://web.archive.org/web/20081011030804/http://www.flightglobal.com/articles/2008/04/01/222553/chinook-five-decades-of-development.html |archive-date= 11 October 2008 |url-status= live}}</ref> On 21 September 1961, the preproduction [[Boeing Vertol]] YCH-1B made its initial hovering flight. During 1962, the HC-1B was redesignated the CH-47A under the [[1962 United States Tri-Service aircraft designation system]]; it was also named "Chinook" after the Chinook people of the Pacific Northwest.<ref>{{cite web|url=https://www.defense.gov/News/Inside-DOD/Blog/Article/2052989/why-army-helicopters-have-native-american-names/|archive-url=https://web.archive.org/web/20210923214323/https://www.defense.gov/News/Inside-DOD/Blog/Article/2052989/why-army-helicopters-have-native-american-names/|url-status=dead|archive-date=23 September 2021|title=Why Army Helicopters Have Native American Names|first=Katie|last=Lange|date=2019-11-29|access-date=2021-12-20|publisher=Department of Defense}}</ref>

{{Listen
| filename= Chinook helicopter flying over Greenwich in London.ogg
| title= Chinook helicopter flying overhead in Greenwich, London
| description= The distinctive sound of the Chinook helicopter, recorded May 2016.
}}
The CH-47 is powered by two [[turboshaft]] engines, mounted on each side of the helicopter's rear pylon and connected to the rotors by drive shafts. Initial models were fitted with [[Lycoming T55]] engines rated at {{convert|2200|hp|kW|abbr=on}} each. The counter-rotating rotors eliminate the need for an antitorque vertical rotor, allowing all power to be used for lift and thrust. The ability to adjust lift in either rotor makes it less sensitive to changes in the center of gravity, important for the cargo lifting and dropping. While hovering over a specific location, a twin-rotor helicopter has increased stability over a single rotor when weight is added or removed, for example, when troops drop from or begin climbing up ropes to the aircraft, or when other cargo is dropped. If one engine fails, the other can drive both rotors.<ref>{{cite web|url=http://www.chinook-helicopter.com/standards/areas/drive_train.html|title=Chinook Information and diagrams about the transmission system|access-date=13 November 2014|archive-url=https://web.archive.org/web/20150330094029/http://www.chinook-helicopter.com/standards/areas/drive_train.html|archive-date=30 March 2015|url-status=dead}}</ref> The "sizing" of the Chinook was directly related to the growth of the Huey and the Army's tacticians' insistence that initial air assaults be built around the squad. The Army pushed for both the Huey and the Chinook, and this focus was responsible for the acceleration of its air mobility effort.<ref name="Tolsonarmy"/>

===Improved and later versions===
[[File:JG-2923 rear door ramp.jpg|thumb|left|A Chinook with its rear ramp lowered]]

Improved and more powerful versions of the CH-47 have been developed since the helicopter entered service. Often, the same airframe was upgraded to later standards, or sometimes the airframes were built to the newer upgrade. The U.S. Army's first major design leap was the now-common CH-47D, which entered service in 1982. Improvements from the CH-47C included upgraded engines, composite rotor blades, a redesigned cockpit to reduce pilot workload, improved and redundant electrical systems, an advanced flight control system, and improved avionics.<ref>{{cite news |url= http://nl.newsbank.com/nl-search/we/Archives?p_product=PI&s_site=philly&p_multi=PI&p_theme=realcities&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=0EB293DCB78A3557&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |title= This Whirlybird's an early bird: Boeing Vertol's Army copter delivered on budget |first= Tom |last= Belden |website= The Philadelphia Inquirer |date= 21 May 1982 |access-date= 5 April 2010 |archive-url= https://web.archive.org/web/20110608230930/http://nl.newsbank.com/nl-search/we/Archives?p_product=PI&s_site=philly&p_multi=PI&p_theme=realcities&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=0EB293DCB78A3557&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |archive-date= 8 June 2011 |url-status= live}}</ref> The latest (2009) mainstream generation is the CH-47F, which features several major upgrades to reduce maintenance, digitized flight controls, and is powered by two {{convert|4733|hp|kW|adj=on}} Honeywell engines.<ref name="boeing">{{cite web |url= http://boeing.mediaroom.com/index.php?s=43&item=784 |title= Boeing Receives $1.15B Contract for 15 Canadian Chinooks, Announces Matching Reinvestment in Industry |publisher= Boeing |date= 10 August 2009 |access-date= 11 August 2009 |archive-url= https://web.archive.org/web/20110725093825/http://boeing.mediaroom.com/index.php?s=43&item=784 |archive-date= 25 July 2011 |url-status= live}}</ref>

[[File:CH-47_Cockpit.jpg|thumb|CH-47F cockpit view, 2022]]
An example of a British upgraded version is the HC.4, which first flew on 9 December 2010.<ref>Parsons, Gary. [http://www.key.aero/view_news.asp?ID=2915&thisSection=military "First Project Julius Chinook flies"] {{webarchive |url=https://web.archive.org/web/20120314151556/http://www.key.aero/view_news.asp?ID=2915&thisSection=military |date=14 March 2012 }}. Key Publishing via key.aero, 24 January 2011.</ref>

A commercial model of the Chinook, the Boeing-Vertol Model 234, is used worldwide for logging, construction, forest fire suppresion, and petroleum-extraction operations. In December 2006, [[Columbia Helicopters]] Inc. purchased the [[type certificate]] of the Model 234 from Boeing.<ref>{{cite web |title= Type Certificate Data Sheet No. H9EA |publisher= Federal Aviation Administration |date= 17 January 2007 |url= http://www.airweb.faa.gov/Regulatory_and_Guidance_Library%5CrgMakeModel.nsf/0/84EBE8780BF584058625726B00657D0E/$FILE/H9EA.pdf |archive-url= https://wayback.archive-it.org/all/20070614191643/http://www.airweb.faa.gov/Regulatory_and_Guidance_Library%5CrgMakeModel.nsf/0/84EBE8780BF584058625726B00657D0E/$FILE/H9EA.pdf |url-status= dead |archive-date= 14 June 2007 |format= .pdf |access-date= 8 February 2007}}</ref> The Chinook has also been licensed to be built by companies outside the United States, such as [[Agusta]] (later [[AgustaWestland]], now [[Leonardo (company)|Leonardo]]) in Italy and [[Kawasaki Heavy Industries|Kawasaki]] in Japan.<ref>{{cite press release |date=2013-06-26 |title=AW1067 ICH-47F Maiden Flight |url=https://www.leonardocompany.com/en/press-release-detail/-/detail/aw1067i-ch-47-f-maiden-flight |location=Vergiate |publisher=Leonardo |access-date=2021-12-20}}</ref><ref>{{cite web|title=CH-47JA Helicopter|access-date=2021-12-20|publisher=Kawasaki|url=https://global.kawasaki.com/en/mobility/air/helicopters/ch_47j.html}}</ref>

===CH-47F orders===
In February 2007, the [[Royal Netherlands Air Force]] became the first international customer of the CH-47F model, expanding their Chinook fleet to 17.<ref name=boeing-pr-sign>{{cite press release |url=http://www.boeing.com/news/releases/2007/q1/070215b_nr.html |publisher=Boeing |title=Boeing Signs Contract for Dutch Chinooks |access-date=1 April 2015 |date=15 February 2007 |url-status=dead |archive-url=https://web.archive.org/web/20130621160310/http://www.boeing.com/news/releases/2007/q1/070215b_nr.html |archive-date=21 June 2013}}</ref> On 10 August 2009, Canada signed a contract for 15 extensively modified and upgraded CH-47Fs for the [[Canadian Armed Forces|Canadian Forces]], later delivered in 2013–2014 with the Canadian designation CH-147F.<ref name=boeing /><ref name=globe-mail-late>{{cite web |last1=Leblanc |first1=Daniel |url=https://www.theglobeandmail.com/news/politics/forces-ink-deal-for-new-copters/article1247229/ |title=Chinooks will fly too late for Afghanistan |work=The Globe and Mail |access-date=1 April 2015 |date=10 August 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090814212331/http://www.theglobeandmail.com/news/politics/forces-ink-deal-for-new-copters/article1247229/ |archive-date=14 August 2009}}</ref> On 15 December 2009, Britain announced its Future Helicopter Strategy, including the purchase of 24 new CH-47Fs to be delivered from 2012.<ref>[http://www.defensenews.com/story.php?i=4420094&c=EUR&s=AIR "As Cuts Loom, Britain Orders 24 Chinooks From Boeing"]. Defense News, 15 December 2009.{{dead link |date=April 2015}}</ref> Australia ordered seven CH-47Fs in March 2010 to replace its six CH-47Ds between 2014 and 2017.<ref>[http://www.defenseindustrydaily.com/Australia-Ordering-CH-47F-Chinooks-05395/ "Australia Ordering CH-47F Chinooks"] {{Webarchive |url=https://web.archive.org/web/20111103142901/http://www.defenseindustrydaily.com/Australia-Ordering-CH-47F-Chinooks-05395/ |date=3 November 2011}}. Defense Industry Daily, 22 March 2010.</ref><ref>{{cite web |url=http://www.minister.defence.gov.au/gregCombettpl.cfm?CurrentId=10063 |title=New Chinook CH-47 helicopters |last=The Hon. Greg Combet AM MP |date=20 March 2010 |work=Media Release |publisher=Australian Department of Defence |url-status=dead |archive-url=https://web.archive.org/web/20100324214913/http://www.minister.defence.gov.au/gregCombettpl.cfm?CurrentId=10063 |archive-date=24 March 2010}}</ref> In September 2015, [[India]] approved purchase of 15 CH-47F Chinooks.<ref>{{cite web |url= https://www.indiatoday.in/mail-today/story/india-clears-purchase-of-15-chinooks-and-22-apache-helicopters-from-us-264385-2015-09-22 |title= India clears purchase of 15 Chinooks and 22 Apache helicopters from US |work= intoday.in |date= 23 September 2015 |access-date= 27 September 2015 |archive-url= https://web.archive.org/web/20150928031425/http://indiatoday.intoday.in/story/india-clears-purchase-of-15-chinooks-and-22-apache-helicopters-from-us/1/480655.html |archive-date= 28 September 2015 |url-status= live}}</ref> On 7 November 2016, Singapore announced that the CH-47F would replace its older Chinooks, which had been in service since 1994, enabling the [[Republic of Singapore Air Force]] to meet its requirements for various operations, including search-and-rescue<!-- (SAR) -->, aeromedical evacuation<!-- (AME) -->, and humanitarian assistance and disaster relief<!-- (HADR) --> operations.<ref>{{cite web |url=https://www.mindef.gov.sg/imindef/press_room/details.html?name=07nov16_nr2&date=2016-11-07 |title=MINDEF Signs Contracts to Acquire New Medium- and Heavy-Lift Helicopters |last=Government of Singapore |date=7 November 2016 |archive-url=https://web.archive.org/web/20161107221721/https://www.mindef.gov.sg/imindef/press_room/details.html?name=07nov16_nr2&date=2016-11-07 |archive-date=7 November 2016 |url-status=dead |access-date=7 November 2016}}</ref> The German government announced in June 2022 that the CH-47F Block 2 was selected as the winner of its heavy helicopter program to replace its [[Sikorsky CH-53K#Failed bids|Sikorsky CH-53G]] Sea Stallion fleet.<!-- The C-47F is to be delivered to the Bundeswehr (German Armed Forces) between 2023 and 2029. (The text in source indicates these are "plans", not a contracted terms.) --><ref>{{cite web |url= https://www.aviacionline.com/2022/06/breaking-germany-makes-its-choice-for-boeings-ch-47-chinook-official/ |title= Breaking: Germany makes its choice for Boeing's CH-47 Chinook official |website= aviacionline.com |date= 1 June 2022 |access-date= 19 June 2022}}</ref><ref name=":0">{{Cite web |title=Germany – CH-47F Chinook Helicopters {{!}} Defense Security Cooperation Agency |url=https://www.dsca.mil/press-media/major-arms-sales/germany-ch-47f-chinook-helicopters |access-date=2023-05-13 |website=www.dsca.mil}}</ref> Germany is planning to buy sixty airframes to boost heavy lift capability.<ref>{{Cite web |date=2023-05-11 |title=US approves $8.5 billion sale of Chinook helicopters to Germany |url=https://www.seattletimes.com/nation-world/nation/us-approves-8-5-billion-sale-of-chinook-helicopters-to-germany/ |access-date=2024-04-06 |website=The Seattle Times |language=en-US}}</ref>

Spain had 17 CH-47s, which it is planning to upgrade to CH-47F standards.<ref>{{cite web |last1=Waldron |first1=Greg |title=Boeing to upgrade Spain CH-47D fleet to CH-47F standard |url=https://www.flightglobal.com/news/articles/boeing-to-upgrade-spain-ch-47d-fleet-to-f-standard-454783/ |website=Flight Global |access-date=4 January 2019 |archive-url=https://archive.today/20190104213912/https://www.flightglobal.com/news/articles/boeing-to-upgrade-spain-ch-47d-fleet-to-f-standard-454783/ |archive-date=4 January 2019 |location=Singapore |date=4 January 2019 |url-status=live}}</ref> By 2023, 13 CH-47Ds were upgraded to CH-47Fs, and additionally, four newly built CH-47Fs were acquired.<ref>{{Cite web |date=2023-07-23 |title=Spain prefers Boeing CH-47F Block I heavy helicopters, buys 18th |url=https://bulgarianmilitary.com/2023/07/23/spain-prefers-boeing-ch-47f-block-i-heavy-helicopters-buys-18th/ |access-date=2024-04-06 |language=en-US}}</ref>

==Operational history==

===Vietnam War===
[[File:1st Cavalry troops deploy from CH-47, Operation Masher, February 1966.jpg|thumb|Soldiers depart a CH-47 during [[Operation Masher]] in 1966.]]

The Army finally settled on the larger Chinook as its standard medium-transport helicopter, and by February 1966, 161 aircraft had been delivered to the Army. The [[1st Cavalry Division (United States)|1st Cavalry Division]] had brought its organic Chinook battalion (three Chinook companies) when it arrived in 1965 and a separate aviation medium helicopter company, the 147th, had arrived in Vietnam on 29 November 1965.<ref>{{cite news |url= http://select.nytimes.com/gst/abstract.html?res=F40D10FF3C5A157A93C3A81783D85F418685F9 |title= Chinook Copter to Vietnam |work= The New York Times |date= 11 August 1965 |access-date= 29 March 2010 |archive-url= https://web.archive.org/web/20121103000428/http://select.nytimes.com/gst/abstract.html?res=F40D10FF3C5A157A93C3A81783D85F418685F9 |archive-date= 3 November 2012 |url-status= live}}</ref> This latter company was initially placed in direct support of the [[1st Infantry Division (United States)|1st Infantry Division]]. CH-47 crews quickly learned to mount an [[M60 machine gun]] in each of the forward doors. Sometimes, they also installed an [[M2 Browning|M2]] machine gun to fire from the rear cargo door.<ref>{{Cite web|url=https://www.historynet.com/arsenal-ch-47c-chinook-helicopter.htm|title = Arsenal|date = 21 April 2017}}</ref>

The most spectacular mission in Vietnam for the Chinook was the placing of artillery batteries in perilous mountain positions inaccessible by any other means, and then keeping them resupplied with large quantities of ammunition.<ref name="Tolsonarmy"/> The 1st Cavalry Division found that its CH-47s were limited to a {{convert|7000|lb|adj=on}} payload when operating in the mountains, but could carry an additional {{convert|1000|lb}} when operating near the coast.<ref name="Tolsonarmy"/>

[[File:NARA photo 111-CCV-569-CC50045.jpg|thumb|left|A CH-47A delivers a water trailer, 1967.]]
As with any new piece of equipment, the Chinook presented a major problem of "customer education". Commanders and crew chiefs had to be constantly alert that eager soldiers did not overload the temptingly large cargo compartment. Quite some time was needed before troops would be experts at using sling loads.<ref name="Tolsonarmy"/> The Chinook soon proved to be such an invaluable aircraft for artillery movement and heavy logistics that it was seldom used as an assault troop carrier. Some of the Chinook fleet was used for casualty evacuation, and due to the very heavy demand for the helicopters, they were usually overburdened with wounded.<ref>{{cite journal |title= Hardships and Personal Strategies of Vietnam War Nurses |first= Elizabeth A. |last= Scannell-Desch |author2= Marion Anderson |journal= Western Journal of Nursing Research |volume= 22 |number= 5 |pages= 526–550 |year= 2000 |doi= 10.1177/01939450022044584 |pmid= 10943170|s2cid= 41787367}}</ref> Perhaps the most cost effective use of the Chinook was the recovery of other downed aircraft.<ref>{{cite book |url= https://books.google.com/books?id=lXZuAAAAMAAJ |title= Vietnam choppers: helicopters in battle 1950–75 |first= Simon |last= Dunstan |publisher=Osprey Publishing |year= 2003 |page= 81|isbn= 978-0-85045-572-4}}</ref>

At the war's peak, the US Army had 21 Chinook companies in Vietnam.{{citation needed|date=November 2020}} Pilots discovered the CH-47A's transmission system could not handle the two gas turbines running at full power, and high humidity and heat reduced the maximum lift by more than 20% in the lowlands and 30% in mountain areas. More powerful, improved transmissions and strengthened fuselages arrived in 1968 with the CH-47B, followed a few months later by the CH-47C. The CH-47s in Vietnam were generally armed with a single 0.308&nbsp;in ([[7.62×51mm NATO|7.62 mm]]) M60 machine gun on a [[pintle mount]] on either side of the aircraft for self-defense, with stops fitted to keep the gunners from firing into the rotor blades. Dust filters were also added to improve engine reliability. Of the nearly 750 Chinook helicopters in the U.S. and South Vietnam fleets, about 200 were lost in combat or wartime operational accidents.<ref>Anderton, David & Miller, Jay – Boeing Helicopters CH-47 Chinook. Arlington: Aerofax, Inc, 1989, p. 8. {{ISBN|0-942548-42-6}}.</ref> The U.S. Army CH-47s supported the [[1st Australian Task Force]] as required.

[[File:Ch47-chinook-vietnam.jpg|thumb|Troops unload from a CH-47 in the Cay Giep Mountains, Vietnam, 1967.]]
Four CH-47s were converted into ACH-47As by adding armor and improved engines. Its armament included two fixed, forward-firing [[Hispano-Suiza HS.404|M24A1 20&nbsp;mm cannons]], one turret with 40&nbsp;mm automatic grenade launcher on the nose, five .50 in machine guns, and two weapon pods on the sides that could carry either [[Fin-Folding Aerial Rocket#Common Mk 40 FFAR Launchers|XM159B/XM159C]] 70&nbsp;mm rocket launchers or 7.62&nbsp;mm miniguns. They arrived in Vietnam in 1966, and they engaged in six months of operational testing at [[Camp Radcliff|An Khê Army Airfield]]. They performed well in combat, but their high maintenance costs and demand for use in troop and cargo transport was stronger. Three ACH-47s were lost. One collided with a CH-47 while taxiing. Another had a retention pin shake loose on a 20&nbsp;mm cannon and was brought down when its own gun fired through the forward rotor blades. The third was grounded by enemy fire and destroyed by enemy mortar rounds after the crew escaped.<ref>{{Cite web|url=https://www.businessinsider.com/this-monster-aircraft-was-the-helicopter-version-of-the-ac-130-gunship-2015-9?r=US&IR=T|title = This monster aircraft was the helicopter version of the AC-130 gunship|website = [[Business Insider]]}}</ref>

===Iran===
During the 1970s, the U.S. and Iran had a strong relationship, in which the Iranian armed forces began to use many American military aircraft, most notably the [[Grumman F-14 Tomcat|F-14 Tomcat]], as part of a modernization program.<ref>{{cite news|url=https://news.google.com/newspapers?id=2r4bAAAAIBAJ&pg=4795,3807638&dq=f14+iran&hl=en |title=Oil pact with U.S. firm: Iran signs agreement |first=Murray |last=Marder |newspaper=Victoria Advocate |date=26 July 1973}}{{dead link|date=November 2016 |bot=InternetArchiveBot |fix-attempted=yes}}</ref> After an agreement signed between [[Boeing]] and [[Agusta]], the [[History of the Iranian Air Force|Imperial Iranian Air Force]] purchased 20 Agusta-built CH-47Cs in 1971.<ref>{{cite news |url= http://select.nytimes.com/gst/abstract.html?res=F00A13FF3455127B93C7AB178CD85F458785F9 |title= U.S., Britain Quietly Back Military Build-Up of Iran |first= Tad |last= Szulcs |work= The New York Times |date= 25 July 1971 |access-date= 5 April 2010 |archive-url= https://web.archive.org/web/20110605164657/http://select.nytimes.com/gst/abstract.html?res=F00A13FF3455127B93C7AB178CD85F458785F9 |archive-date= 5 June 2011 |url-status= live}}</ref> The [[Imperial Iranian Army Aviation]] purchased 70 CH-47Cs from Agusta between 1972 and 1976. In late 1978, Iran placed an order for an additional 50 helicopters with Elicotteri Meridionali, but that order was canceled immediately after the [[Iranian Revolution|revolution]];<ref>{{cite web |url= https://news.google.com/newspapers?id=XGoaAAAAIBAJ&pg=7019,117947&dq=iran+chinook&hl=en |title= US reportedly will buy copters so Iran can't |publisher= Milwaukee Journal |date= 22 January 1984}}{{Dead link|date=December 2021 |bot=InternetArchiveBot |fix-attempted=yes}}</ref> 11 of them were delivered after multiple requests by Iran.<ref>about:reader?url=http%3A%2F%2Firartesh.ir%2Fpost%2F502&tabId=4</ref>

[[File:Boeing-Vertol CH-47C 4-201 Imp Iran AF Issy 06.06.71 edited-2.jpg|thumb|left|Imperial Iranian Air Force CH-47C in France before delivery in 1971]]
In the [[1978 Iranian Chinook shootdown]], four Iranian CH-47Cs penetrated {{convert|15|–|20|km|mi|abbr=on|0}} into Soviet airspace in the [[Turkmenistan]] Military District. They were intercepted by a [[Mikoyan-Gurevich MiG-23|MiG-23M]], which shot down one CH-47, killing eight crew members, and forced a second helicopter to land.{{citation needed|date=March 2023}} Chinook helicopters were used in efforts by the Iranian against Kurdish rebels in 1979.<ref>{{cite news |url= https://news.google.com/newspapers?id=zbMwAAAAIBAJ&pg=4025,4705243&dq=iran+orders+chinook&hl=en |title= Iranian troops smash four-day siege by Kurds |newspaper=Lakeland Ledger |date= 27 August 1979}}</ref>

During the [[Iran–Iraq War]], Iran made heavy use of its US-bought equipment, and lost at least eight CH-47s during the 1980–1988 period, most notably during a clash on 15 July 1983, when an Iraqi [[Dassault Mirage F1|Mirage F1]] destroyed three Iranian Chinooks transporting troops to the front line, and on 25–26 February 1984, when Iraqi [[Mikoyan-Gurevich MiG-21|MiG-21 fighters]] shot down two examples.<ref>{{cite web|url=http://www.acig.info/CMS/index.php?option=com_content&task=view&id=37&Itemid=47|title=Iraqi Air-to-Air Victories since 1967|author=Sander Peeters|access-date=13 November 2014|archive-url=https://web.archive.org/web/20161219172206/http://www.acig.info/CMS/index.php?option=com_content&task=view&id=37&Itemid=47|archive-date=19 December 2016|url-status=dead}}</ref> On 22 March 1982, in [[Operation Fath ol-Mobin]], a key operation of the war, Iranian Chinooks were landed behind Iraqi lines, deployed troops that silenced their artillery, and captured an Iraqi headquarters; the attack took the Iraqi forces by surprise.<ref name="Farrokh 03">{{cite book|last=Farrokh|first=Kaveh|title=Iran at War: 1500–1988|publisher=Osprey Publishing|location=Oxford|isbn=9781780962214|date=20 December 2011}}</ref>

Despite the [[Sanction against Iran|arms embargo]] in place upon Iran,<ref>{{cite news |url= https://news.google.com/newspapers?id=leURAAAAIBAJ&pg=4515,3550419&dq=iran+chinook&hl=en |title= Iran feeling squeeze of European embargo |first= Amit |last= Roy |newspaper= Spokesman-Review |date= 23 February 1980}}{{Dead link|date=December 2021 |bot=InternetArchiveBot |fix-attempted=yes}}</ref><ref>{{cite news |url= https://pqasb.pqarchiver.com/chicagotribune/access/621269432.html?dids=621269432:621269432&FMT=ABS&FMTS=ABS:AI&type=historic&date=Nov+09%2C+1979&author=&pub=Chicago+Tribune&desc=U.S.+cuts+off+plane+parts+to+Iran&pqatl=google |title= U.S. cuts off plane parts to Iran |work= Chicago Tribune |date= 9 November 1979 |access-date= 5 July 2017 |archive-url= https://web.archive.org/web/20121026083537/http://pqasb.pqarchiver.com/chicagotribune/access/621269432.html?dids=621269432:621269432&FMT=ABS&FMTS=ABS:AI&type=historic&date=Nov+09,+1979&author=&pub=Chicago+Tribune&desc=U.S.+cuts+off+plane+parts+to+Iran&pqatl=google |archive-date= 26 October 2012 |url-status= dead}}</ref> it has managed to keep its Chinook fleet operational.<ref>{{cite web |url= https://www.foxnews.com/story/iran-china-seek-military-equipment-from-pentagon-surplus-auctions |title= Iran, China Seek Military Equipment From Pentagon Surplus Auctions |publisher= Fox News Channel |date= 16 January 2007 |access-date= 19 December 2018 |archive-url= https://web.archive.org/web/20100208054906/http://www.foxnews.com/story/0,2933,243858,00.html |archive-date= 8 February 2010 |url-status= live |df= dmy-all}}</ref><ref>{{cite news |url= http://nl.newsbank.com/nl-search/we/Archives?p_product=NewsLibrary&p_multi=BBAB&d_place=BBAB&p_theme=newslibrary2&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=116F24F631F8B598&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |title= Iranian engineers overhaul Chinook helicopter |work= BBC News |date= 27 January 2007 |access-date= 5 April 2010 |archive-url= https://web.archive.org/web/20110609000748/http://nl.newsbank.com/nl-search/we/Archives?p_product=NewsLibrary&p_multi=BBAB&d_place=BBAB&p_theme=newslibrary2&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=116F24F631F8B598&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |archive-date= 9 June 2011 |url-status= dead}}</ref> Some of the Chinooks have been rebuilt by [[PANHA|Panha]]. As of 2015, 20 to 45 Chinooks were operational in Iran.<ref>{{cite web|url=http://irartesh.ir/post/502|title=آشنایی با هوانیروز ایران|work=irartesh.ir|access-date=12 February 2015|archive-url=https://web.archive.org/web/20150212190535/http://irartesh.ir/post/502|archive-date=12 February 2015|url-status=dead}}</ref>

===Libyan wars===
In 1976, the [[Libyan Air Force]] purchased 24 Italian-built CH-47C helicopters, 14 of which were transferred to the Libyan Army during the 1990s. The Libyan Air Force recruited Western pilots and technicians to operate the CH-47 fleet.<ref>Crossette, Barbara [https://www.nytimes.com/1981/11/03/world/role-of-americans-in-libyan-warfare-confirmed-by-us.html ROLE OF AMERICANS IN LIBYAN WARFARE CONFIRMED BY U.S. Published: 3 November 1981] {{Webarchive|url=https://web.archive.org/web/20170109115016/http://www.nytimes.com/1981/11/03/world/role-of-americans-in-libyan-warfare-confirmed-by-us.html |date=9 January 2017}} ''[[The New York Times]]'' Retrieved 18 November 2016</ref> The Libyan Chinooks flew transport and support missions into Chad to supply Libyan ground forces operating there in the 1980s. Chinooks were occasionally used to transport Libyan special forces in assault missions in northern Chad.

In 2002, Libya sold 16 helicopters to the United Arab Emirates, as maintaining them was difficult due to the Western embargo and lack of funds. The sale to UAE was a $939 million package that included equipment, parts, and training.<ref>[https://www.flightglobal.com/news/articles/uae-awards-contracts-for-ch-47-upgrade-195191/ UAE awards contracts for CH-47 upgrade 15 March 2005] {{Webarchive|url=https://web.archive.org/web/20170812022712/https://www.flightglobal.com/news/articles/uae-awards-contracts-for-ch-47-upgrade-195191/ |date=12 August 2017}} ''flightglobal.com'' Retrieved 18 November 2016</ref> The number of CH-47s still in existence or operational during the ongoing [[Libyan Crisis (2011–present)|Libyan civil wars]] that started in 2011 is not known.

===Falklands War===
{{see also|Boeing Chinook (UK variants)#Operational history}}

The Chinook was used both by Argentina and the United Kingdom during the [[Falklands War]] in 1982.<ref>{{cite news |url= https://pqasb.pqarchiver.com/boston/access/666369341.html?dids=666369341:666369341&FMT=ABS&FMTS=ABS:FT&type=current&date=May+21%2C+1982&author=Associated+Press&pub=Boston+Globe+(pre-1997+Fulltext)&desc=BRITISH+AIR+AND+LAND+FORCES+OUTNUMBERED&pqatl=google |title= British air and land forces outnumbered |work= The Boston Globe |date= 21 May 1982 |access-date= 5 July 2017 |archive-url= https://web.archive.org/web/20121026041945/http://pqasb.pqarchiver.com/boston/access/666369341.html?dids=666369341:666369341&FMT=ABS&FMTS=ABS:FT&type=current&date=May+21,+1982&author=Associated+Press&pub=Boston+Globe+(pre-1997+Fulltext)&desc=BRITISH+AIR+AND+LAND+FORCES+OUTNUMBERED&pqatl=google |archive-date= 26 October 2012 |url-status= dead}}</ref>

The [[Argentine Air Force]] and the [[Argentine Army]] each deployed two CH-47C helicopters, which were widely used in general transport duties. Of the Army's aircraft, one was destroyed on the ground by [[ADEN cannon|30&nbsp;mm cannon fire]] from an RAF GR3 [[Hawker Siddeley Harrier|Harrier]], while the other was captured by the British and reused after the war.<ref>{{cite news |url=https://news.bbc.co.uk/2/hi/uk_news/england/devon/8157265.stm |title=MoD uses 'cut and shut' chopper |date=18 July 2009 |work=BBC News |access-date=5 April 2010 |archive-url=https://web.archive.org/web/20090722131831/http://news.bbc.co.uk/2/hi/uk_news/england/devon/8157265.stm |archive-date=22 July 2009 |url-status=live}}</ref><ref>{{Cite web|url=http://www.naval-history.net/F64argaircraftlost.htm|title=Argentine Aircraft Lost - Falklands War 1982|website=www.naval-history.net}}</ref> Both Argentine Air Force helicopters returned to Argentina<ref>{{cite web|url=https://www.helis.com/database/modelorg/Chinook-FAA/|title=Boeing-Vertol CH-47C Chinook in Argentina - Fuerza Aerea Argentina|work=Helis.com|access-date=20 March 2023}}</ref> and remained in service until 2002.

Three British Chinooks were destroyed on 25 May 1982 when [[SS Atlantic Conveyor|''Atlantic Conveyor'']] was struck by an [[Exocet]] sea-skimming missile fired by an Argentine [[Dassault-Breguet Super Étendard|Super Étendard]].<ref>{{cite web|url=http://www.raf.mod.uk/news/royalairforcech47chinookbravonovember.cfm|title=RAF - Royal Air Force CH47 Chinook 'Bravo November'|publisher=[[Royal Air Force]]|access-date=5 January 2017|url-status=dead|archive-url=https://web.archive.org/web/20110405224655/http://www.raf.mod.uk/news/royalairforcech47chinookbravonovember.cfm|archive-date=5 April 2011}}</ref><ref name="Air War Southp147-8">Ethell and Price 1983, pp. 147–148.</ref><ref name="Air War South p151-2">Ethell and Price 1983, pp. 151–152.</ref> The sole surviving British Chinook, [[Bravo November]], did outstanding service in the Falklands, lifting 81 troops on one occasion.<ref>{{cite web|url=http://www.airvectors.net/avch47_2.html|title=The Boeing Chinook|work=airvectors.net|access-date=30 April 2017|archive-url=https://web.archive.org/web/20170720122023/http://airvectors.net/avch47_2.html|archive-date=20 July 2017|url-status=dead}}</ref> Since April 2022, it has been on display at [[Royal Air Force Museum Cosford]].<ref>{{cite web |title=Helicopter legend 'Bravo November' heads to Cosford |url=https://www.rafmuseum.org.uk/midlands/whats-going-on/news/helicopter-legend-bravo-november-heads-to-cosford/ |website=RAF Museum |access-date=14 March 2024}}</ref>

[[File:Flickr - The U.S. Army - www.Army.mil (193).jpg|thumb|U.S. Army soldiers ride inside a Chinook, November 2008.]]

===Afghanistan and Iraq wars===
About 163 CH-47Ds of various operators were deployed to [[Saudi Arabia]], [[Kuwait]], and [[Iraq]] during [[Operation Desert Shield]] and the subsequent Operation Desert Storm in 1990–91.<ref name="at.com">{{cite web|url=http://www.army-technology.com/projects/chinook/|title=CH-47D/MH-47E Chinook|work=Army Technology|access-date=27 August 2006|year=2006|publisher=SPG Media Limited|archive-url=https://web.archive.org/web/20060825194636/http://www.army-technology.com/projects/chinook/|archive-date=25 August 2006|url-status=live}}</ref>

The CH-47D saw wide use in [[Operation Enduring Freedom]] in Afghanistan and [[Iraq War|Operation Iraqi Freedom]] in Iraq. The Chinook was used in [[air assault]] missions, inserting troops into [[fire base]]s, and later bringing food, water, and ammunition. It was also the casualty evacuation aircraft of choice in the [[British Armed Forces]].<ref>{{cite news |url= https://pqasb.pqarchiver.com/smgpubs/access/60610400.html?dids=60610400:60610400&FMT=ABS&FMTS=ABS:FT&type=current&date=Sep+12%2C+2000&author=&pub=The+Herald&desc=Paras+tell+of+their+fear+under+fire%3B+%27It+was+scary+but+once+we+got+into+the+fighting%2C+the+training+took+over%27&pqatl=google |archive-url= https://archive.today/20130131203324/http://pqasb.pqarchiver.com/smgpubs/access/60610400.html?dids=60610400:60610400&FMT=ABS&FMTS=ABS:FT&type=current&date=Sep+12,+2000&author=&pub=The+Herald&desc=Paras+tell+of+their+fear+under+fire;+'It+was+scary+but+once+we+got+into+the+fighting,+the+training+took+over'&pqatl=google |url-status= dead |archive-date= 31 January 2013 |title= Paras tell of their fear under fire |work= The Herald |date= 12 September 2000}}</ref> In [[Theater (warfare)|combat theaters]], it is typically escorted by attack helicopters such as the [[AH-64 Apache]] for protection.<ref>{{cite news |url= https://news.bbc.co.uk/2/hi/uk_news/367078.stm |title= UK leads Nato into Kosovo |work= BBC News |date= 12 June 1999 |access-date= 4 April 2010 |archive-url= https://web.archive.org/web/20170812022956/http://news.bbc.co.uk/1/hi/uk/367078.stm |archive-date= 12 August 2017 |url-status= live}}</ref><ref>{{cite web|url=http://www.dailyrecord.co.uk/news/tm_objectid=16627753&method=full&siteid=66633&headline=scots-set-for-taliban-hotspots--name_page.html |title=Scots set for Taliban Hotspots |first=Pippa |last=Crerar |work=Daily Record |date=26 January 2006 |url-status=dead |archive-url=https://web.archive.org/web/20110609190947/http://www.dailyrecord.co.uk/news/tm_objectid%3D16627753%26method%3Dfull%26siteid%3D66633%26headline%3Dscots-set-for-taliban-hotspots--name_page.html |archive-date=9 June 2011}}</ref> Its lift capacity had been found of particular value in the mountainous terrain of Afghanistan, where high altitudes and temperatures limit the use of helicopters such as the [[UH-60 Black Hawk]]; reportedly, one Chinook could replace up to five UH-60s in the air assault transport role.<ref>{{cite web |url= http://www.strategypage.com/htmw/htairmo/20080305.aspx |title= Chinook Replaces Blackhawk in Combat |publisher= Air Transportation |date= 5 March 2008 |access-date= 4 April 2010 |archive-url= https://web.archive.org/web/20090728024522/http://www.strategypage.com/htmw/htairmo/20080305.aspx |archive-date= 28 July 2009 |url-status= dead}}</ref>

[[File:Inbound Choppers in Afghanistan 2008.jpg|thumb|left|Soldiers wait for pickup by two CH-47s in [[Afghanistan]], 2008.]]
The Chinook helicopters of several nations have participated in the Afghanistan War, including aircraft from Britain, Italy, the Netherlands, Spain, Canada, and Australia. Despite the age of the Chinook, it was still in heavy demand, in part due its proven versatility and ability to operate in demanding environments such as Afghanistan.<ref name=boeing /><ref>{{cite news |url= https://www.telegraph.co.uk/news/newstopics/politics/defence/6816249/MoD-to-buy-22-new-Chinooks.html |title= MoD to buy 22 new Chinooks |work= The Daily Telegraph |date= 15 December 2009 |location= London |access-date= 4 April 2018 |archive-url= https://web.archive.org/web/20100223220251/http://www.telegraph.co.uk/news/newstopics/politics/defence/6816249/MoD-to-buy-22-new-Chinooks.html |archive-date= 23 February 2010 |url-status= dead}}</ref>

In May 2011, an Australian Army CH-47D crashed during a resupply mission in Zabul Province, resulting in one fatality and five survivors. The helicopter was unable to be recovered and was destroyed in place.<ref>{{cite news|last=Dodd|first=Mark|title=Insurgent fire may have caused fatal Chinook crash in Afghanistan|url=http://www.theaustralian.com.au/national-affairs/defence/insurgent-fire-may-have-caused-crash/story-e6frg8yo-1226066379967|access-date=31 May 2011|newspaper=The Australian|date=31 May 2011}}</ref><ref>{{cite web|title=PRESS CONFERENCE WITH CHIEF OF THE DEFENCE FORCE AIR CHIEF MARSHAL ANGUS HOUSTON AND MINISTER FOR DEFENCE STEPHEN SMITH |url=http://www.defence.gov.au/media/SpeechTpl.cfm?CurrentId=11891 |archive-url=https://web.archive.org/web/20110602013258/http://www.defence.gov.au/media/SpeechTpl.cfm?CurrentId=11891 |url-status=dead |archive-date=2 June 2011 |publisher=Department of Defence |access-date=31 May 2011}}</ref> To compensate for the loss, the ADF added two ex-U.S. Army CH-47Ds to the fleet which are expected to be in service until the introduction of the CH-47Fs in 2016.<ref>{{cite web|title=ADF Bolsters CH-47D Chinook Capability|url=http://www.minister.defence.gov.au/2011/12/12/minister-for-defence-and-minister-for-defence-materiel-adf-bolsters-ch-47d-chinook-capability-2/ |work=Ministerial press release|publisher=Department of Defence|access-date=25 December 2011|date=12 December 2011|url-status=dead|archive-url=https://web.archive.org/web/20120227132852/http://www.minister.defence.gov.au/2011/12/12/minister-for-defence-and-minister-for-defence-materiel-adf-bolsters-ch-47d-chinook-capability-2/|archive-date=27 February 2012}}</ref>

[[File:A U.S. Army CH-47 Chinook helicopter, with the 159th Combat Aviation Brigade, 101st Airborne Division, delivers two Humvees during air assault training at Campbell Army Airfield on Fort Campbell, Ky., Aug. 7 120807-A-SG577-002.jpg|thumb|A Boeing CH-47 Chinook at [[Campbell Army Airfield]] on 7 August 2012 delivering two [[Humvee]]s by [[sling load]]]]
On 6 August 2011, a Chinook crashed near Kabul, killing all of the 38 aboard. The Chinook was reportedly [[2011 Afghanistan Boeing Chinook shootdown|shot down]] with a rocket-propelled grenade by the Taliban while attempting to assist a group of U.S. Navy SEALs. The 38 were members of NATO and allied forces, including 22 Naval Special Warfare operators, five U.S. Army Aviation soldiers, three U.S. Air Force special operations personnel, and seven Afghan National Army commandos. A civilian translator and a U.S. military working dog were also killed in the crash, which was the single deadliest during the entire Operation Enduring Freedom campaign. The previous biggest single-day loss for American forces in Afghanistan involved a Chinook that was shot down near Kabul in Kunar Province in June 2005 with all aboard killed, including a 16-member U.S. Special Operations team.<ref>[https://www.nytimes.com/2011/08/07/world/asia/07afghanistan.html?ref=global-home "Copter Downed by Taliban Fire; Elite U.S. Unit Among Dead"] {{Webarchive|url=https://web.archive.org/web/20170812102724/http://www.nytimes.com/2011/08/07/world/asia/07afghanistan.html?ref=global-home |date=12 August 2017}}. ''The New York Times'', 6 August 2011.</ref><ref>[https://archive.today/20130122033730/http://www.defensenews.com/story.php?i=7318493&c=ASI&s=AIR "31 U.S. Troops Killed in Afghanistan Helo Crash"]. ''Defense News'', 6 August 2011.</ref>

Chinook helicopters participated in the [[2021 Kabul airlift|2021 Kabul]] airlift at the close of military operations in Afghanistan.<ref>{{Cite web |title=U.S. Embassy Staff In Afghanistan Are Evacuated To Kabul's Airport |url=https://www.npr.org/2021/08/16/1028027315/u-s-embassy-staff-in-afghanistan-are-evacuated-to-kabuls-airport |access-date=2024-04-06 |website=NPR}}</ref>

===Disaster relief===
The Chinook's ability to carry large, underslung loads has been of significant value in relief operations in the aftermath of [[natural disaster]]s.<ref name="Abraham disaster">Abraham, Suresh. [http://www.shpmedia.com/images/ADJ%2009%20TRANSPORT%20HELICOPTERS.pdf "Tactical Transport Helicopters in Humanitarian Relief Operations."] {{Webarchive|url=https://web.archive.org/web/20140219035143/http://www.shpmedia.com/images/ADJ%2009%20TRANSPORT%20HELICOPTERS.pdf |date=19 February 2014}} ''ADJ'', April 2009.</ref> Numerous operators have chosen to deploy their Chinook fleets to support humanitarian efforts in stricken nations overseas. Following the [[2004 Indian Ocean earthquake and tsunami|2004 Asian tsunami]], the [[Republic of Singapore Air Force]] assisted in the relief operations in neighboring [[Indonesia]] using its Chinooks; similarly, after the [[2005 Kashmir earthquake]], the [[Royal Air Force]] dispatched several Chinooks to northern Pakistan to assist in recovery efforts.<ref name="Abraham disaster"/>

[[File:Pinnacle maneuver.jpg|thumb|left|A CH-47F practicing the pinnacle maneuver whereby soldiers are deposited without the helicopter landing completely]]
In August 1992, six CH-47Ds were deployed from [[Fort Bragg]] in North Carolina to provide relief in the wake of [[Hurricane Andrew]] in what was one of the first major helicopter disaster relief operations on US soil.<ref>{{cite journal |url=https://www.nytimes.com/1992/08/28/us/hurricane-andrew-bush-sending-army-to-florida-amid-criticism-of-relief-effort.html |title=HURRICANE ANDREW; BUSH SENDING ARMY TO FLORIDA AMID CRITICISM OF RELIEF EFFORT |author=Edmund L. Andrews |journal=The New York Times|date=28 August 1992}}</ref> Then President [[George H. W. Bush]] ordered the military to assist. The Chinooks arrived at [[Miami-Opa Locka Executive Airport]], just outside of the disaster zone, one day after the President's order; early on, they performed a wide loop over Homestead and Florida City to publicly display their presence, helping to curtail lawlessness and looting.<ref name="Research Paper 1993">Research Paper: Disaster Relief, World Vision and the Hurricane Andrew Relief Project. Published by World Vision Relief and Development, California. 1993.</ref><ref>{{cite journal |url=https://www.nytimes.com/1992/08/29/us/hurricane-andrew-troops-arrive-with-food-for-florida-s-storm-victims.html |title=HURRICANE ANDREW-Troops Arrive With Food for Florida's Storm Victims |author=Larry Rohter |journal=The New York Times|date=29 August 1992}}</ref> The Chinooks initially flew 12 sorties per day out of Opa Locka, which expanded over time, often supporting distribution operations at Homestead AFB and Opa Locka, as well as delivering relief payloads via internal storage, not using sling loads, supplementing the 24 distribution centers and trucks, proving essential as trucks could not reach the worst-hit areas due to downed trees and power lines. They flew every day for about three weeks, moving supplies and personnel around the disaster zone and carrying media and government officials, including then-Congressman [[Bill Nelson]]. Ultimately, the Chinooks supplied 64 distribution sites throughout the zone and transported 1.2 million pounds of supplies before the urgent relief phase ended.<ref name="Research Paper 1993"/>

[[File:USAID humanitarian assistance and disaster relief efforts for 7.8 magnitude earthquake in Turkiye 8.jpg|thumb|Humanitarian assistance being delivered by a Chinook after an earthquake]]
Three of Japan's CH-47s were used to cool Reactors 3 and 4 of the [[Fukushima I Nuclear Power Plant|Fukushima nuclear power plant]] following the [[Fukushima I nuclear accidents|9.0 earthquake in 2011]]; they were used to collect sea water from the nearby ocean and drop it over the affected areas.<ref>{{cite web |url=http://www.nypost.com/p/news/international/desperate_japan_to_use_water_cannon_wEUW3dMA3OhWqW6DWNU8YJ |title=Japanese military helicopters dump water on Fukushima nuclear power plant |work=New York Post |date=16 March 2011 |archive-url=https://web.archive.org/web/20130724031911/http://www.nypost.com/p/news/international/desperate_japan_to_use_water_cannon_wEUW3dMA3OhWqW6DWNU8YJ |archive-date=24 July 2013 |url-status=dead |access-date=17 March 2011}}</ref><ref>{{cite journal |url=https://www.csmonitor.com/World/Latest-News-Wires/2011/0317/CH-47-Chinook-helicopter-begins-dumping-water-on-nuclear-reactor |title=CH-47 Chinook helicopter begins dumping water on nuclear reactor |author=The Christian Science Monitor |journal=The Christian Science Monitor|date=17 March 2011 |archive-url=https://web.archive.org/web/20141113183634/http://www.csmonitor.com/World/Latest-News-Wires/2011/0317/CH-47-Chinook-helicopter-begins-dumping-water-on-nuclear-reactor |archive-date=13 November 2014 |url-status=live}}</ref> In order to protect the crew from the heightened radiation levels present, a number of lead plates were attached to the floor of each Chinook;<ref>{{cite news|url=http://www.citytv.com/toronto/citynews/topic/japan-earthquake/article/119408--concern-grows-over-spent-fuel-pools-as-crews-spray-nuclear-plant-with-water|archive-url=https://web.archive.org/web/20110318174858/http://www.citytv.com/toronto/citynews/topic/japan-earthquake/article/119408--concern-grows-over-spent-fuel-pools-as-crews-spray-nuclear-plant-with-water|url-status=dead|archive-date=18 March 2011|title=Concern grows over spent fuel pools as crews spray nuclear plant with water|first=Shawne|last=McKeown|date=17 March 2011|work=CityNews}}</ref><ref>{{cite web |url= http://www.nzherald.co.nz/japan-tsunami/news/article.cfm?c_id=1503051&objectid=10713272 |title= Japan crisis: Radiation levels begin to dip |publisher= nzherald.co.nz |date= 18 March 2011}}</ref> even with such measures, pilots had to keep their distance from the reactors while also limiting flight times in the vicinity to a maximum of 45 minutes to avoid excessive radiation exposure.<ref>{{cite web |url= https://www.popularmechanics.com/military/a11893/robot-helicopters-could-be-headed-for-japan-5434307/ |title= Robot Helicopters Could Be Headed for Japan |publisher= popularmechanics.com |first= Joe |last= Pappalardo |date= 21 March 2011}}</ref>

In August 2025, the [[Indian Air Force]], from its Northern Sector, deployed five of its [[Mi-17]] helicopters along with a Chinook and [[C-130J]] transport aircraft each for the [[Relief operations|flood relief operations]] following the [[2025 Uttarakhand flash flood|Uttarakhand]] and [[2025 Kishtwar district flash flood|Kishtwar district flash floods]]. The C-130J aircraft boarded by an [[National Disaster Response Force|NDRF]] team reached Jammu to supply rescue materials, supplies and trained personnel. So far, 50 Army personnel, 21 [[Border Security Force|BSF]] personnel and over 40 civilians have been rescued by the fleet from regions including [[Akhnoor]], [[Pathankot]] and [[Dera Baba Nanak]]. Additionally, over 750&nbsp;kg of relief materials were also air dropped into Pathankot as part of the operation. Additional helicopters and transport aircraft also remained on standby to join the operations if deemed necessary.<ref>{{Cite press release |title=Indian Air Force responds swiftly to Jammu and Punjab Floods |date=2025-08-27 |publisher=[[Press Information Bureau]] |url=https://www.pib.gov.in/PressReleasePage.aspx?PRID=2161332 |access-date=2025-08-31}}</ref>

=== Other operations and roles ===
In April 2023, multiple Chinooks conducted the evacuation of the US Embassy in Khartoum, Sudan, with Special Forces.<ref>{{Cite web |last=Altman |first=Howard |date=2023-04-23 |title=Special Operations Forces Evacuate U.S. Embassy Personnel From Sudan |url=https://www.twz.com/special-ops-forces-evacuate-u-s-embassy-personnel-from-sudan |access-date=2024-04-06 |website=The War Zone |language=en}}</ref> (see also [[Sudanese civil war (2023–present)]]) Chinooks have been deployed to Mali for [[MINUSMA]].

Since the type's inception, the Chinook has carried out various secondary missions, including medical evacuation, disaster relief, search and rescue, aircraft recovery, firefighting, and heavy construction assistance.<ref>{{cite web|url=http://www.boeing.com/rotorcraft/military/ch47d/index.htm|title=CH-47D/F Chinook page|publisher=Boeing|access-date=2 June 2007|archive-url=https://web.archive.org/web/20070604151345/http://www.boeing.com/rotorcraft/military/ch47d/index.htm|archive-date=4 June 2007|url-status=live}}</ref>

In February 2020, the [[Indian Air Force]] started using Chinooks at theatres such as [[Ladakh]] and [[Siachen Glacier]] to assist Indian forces deployed at the Indian borders with [[China]] and [[Pakistan]].<ref>{{Cite web|url=https://www.indiatoday.in/india/story/chinook-helicopters-operationalised-high-altitude-locations-siachen-glacier-1648575-2020-02-21|title=Chinook helicopters operationalised in high-altitude locations including Siachen glacier|date=21 February 2020|website=[[India Today]]|access-date=23 February 2020}}</ref> The [[ISRO|Indian Space Research Organisation]] has also enlisted Indian Air Force Chinooks during the development of its [[Reusable Launch Vehicle Technology Demonstration Program]], with Chinook helicopters air-dropping a test vehicle 'Pushpak' during the ''RLV-LEX-01'' ,''RLV-LEX-02'' and ''RLV-LEX-03'' flight experiments conducted on April 2, 2023, March 22, 2024 and June 23, 2024, respectively.<ref>{{Cite web |date=2024-03-22 |title=ISRO's Pushpak lands successfully in another triumph for reusable launch vehicle |url=https://www.hindustantimes.com/india-news/isro-set-to-launch-its-rlv-vehicle-pushpak-from-karnataka-today-101711067297617.html |access-date=2024-03-22 |website=Hindustan Times |language=en}}</ref><ref>{{Cite web |title=Watch: India's 21st Century Pushpak 'Viman' Successfully Launched |url=https://www.ndtv.com/science/isro-successfully-lands-pushpak-indias-first-reusable-launch-vehicle-5287362 |access-date=2024-03-22 |website=NDTV.com}}</ref><ref>{{Cite news |title=Isro completes 2nd key landing experiment of reusable launch vehicle |url=https://timesofindia.indiatimes.com/india/isro-completes-2nd-key-landing-experiment-of-reusable-launch-vehicle/articleshow/108692653.cms |access-date=2024-03-22 |work=The Times of India |issn=0971-8257}}</ref><ref>{{Cite web |date=2024-03-22 |title=ISRO achieves another milestone, successfully lands Pushpak reusable launch vehicle |url=https://www.moneycontrol.com/news/photos/india/isro-achieves-another-milestone-successfully-lands-pushpak-reusable-launch-vehicle-12507131.html |access-date=2024-03-22 |website=Moneycontrol}}</ref><ref>{{Cite web |date=2024-03-22 |title=ISRO nails it again! Landing mission of Reusable Launch Vehicle 'Pushpak' conducted successfully in Karnataka – See Pictures |url=https://www.financialexpress.com/life/science-isro-nails-it-again-landing-mission-of-reusable-launch-vehicle-pushpak-conducted-successfully-in-karnataka-see-pictures-3433579/ |access-date=2024-03-22 |website=Financialexpress |language=en}}</ref><ref>{{Cite news |last=Rajwi |first=Tiki |date=2024-06-08 |title=ISRO all set for third reusable launch vehicle landing experiment |url=https://www.thehindu.com/sci-tech/science/isro-all-set-for-third-reusable-launch-vehicle-landing-experiment/article68266926.ece |access-date=2025-12-10 |work=The Hindu |language=en-IN |issn=0971-751X}}</ref><ref>{{Cite news |date=2024-06-23 |title=Isro's reusable launch vehicle completes 3rd landing test, paving way for orbital re-entry |url=https://timesofindia.indiatimes.com/india/isros-reusable-launch-vehicle-completes-3rd-landing-test-paving-way-for-orbital-re-entry/articleshow/111200124.cms |access-date=2025-12-10 |work=The Times of India |issn=0971-8257}}</ref>

<gallery mode="packed" heights="160">
File:Chinook-dropt-last-met-twee-lsv.jpg|A Dutch CH-47D hauls slung light vehicles and another load on exercises, 2015.
File:Sky Soldiers! (48599784932).jpg|US parachutists jump from a Chinook over Germany in 2019.
File:ＣＨ－４７ＪＡ（第１２ヘリコプター隊） (2).jpg|A Chinook on exercises in Japan.
File:RLV-TD LEX-03 Landing Experiment 007.jpg|IAF Chinook drops [[ISRO]] [[RLV-TD]] spaceplane prototype.
</gallery>

==Variants==
Many versions of the Chinook have been produced over the decades, including variants that involve major upgrades such as engines and avionics, ones for certain tasks, such as Special Operation missions, and finally for certain countries, such as the J model built by and for Japan.

===HC-1B===
The pre-1962 designation for Model 114 development aircraft that would be redesignated CH-47 Chinook.<ref>{{Cite web|title=CH-47 Chinook - Military Aircraft|url=https://fas.org/man/dod-101/sys/ac/h-47.htm|access-date=2021-06-19|website=fas.org}}</ref>

===CH-47A===
The all-weather, medium-lift CH-47A Chinook was powered initially by [[Lycoming T55]]-L-5 engines rated at {{convert|2200|hp|kW|sigfig=3|lk=in}}, which were replaced by the T55-L-7 rated at {{convert|2650|hp|kW|sigfig=3|abbr=on}} engines or T55-L-7C engines rated at {{convert|2850|hp|kW|sigfig=3|abbr=on}}. The CH-47A had a maximum gross weight of {{convert|33000|lb|abbr=on}}, with a maximum payload about {{convert|10000|lb|abbr=on}}<ref>{{cite web |url=http://www.airforceworld.com/heli/eng/ch47.htm |title=US ARMY CH-47 Chinook Helicopter |access-date=13 November 2014 |archive-url=https://web.archive.org/web/20141028183458/http://airforceworld.com/heli/eng/ch47.htm |archive-date=28 October 2014 |url-status=dead}}</ref> Delivery of the CH-47A Chinook to the U.S. Army began in August 1962. A total of 354 were built.<ref>{{cite web|title=BOEING CH-47D CHINOOK 83-24104 MUSEUM ACCESSION NUMBER X004-1310|date=2012|first=Andrew|last=Simpson|url=https://www.rafmuseum.org.uk/documents/collections/X004-1310-CH-47D-Chinook-83-24104.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://www.rafmuseum.org.uk/documents/collections/X004-1310-CH-47D-Chinook-83-24104.pdf |archive-date=2022-10-09 |url-status=live|publisher=[[Royal Air Force Museum London]]|access-date=2021-12-20}}</ref>

===ACH-47A===
[[File:Armament on ACH-47A "Birth Control" at Vung Tau Air Base.jpg|thumb|XM34 armament system on ACH-47A "Birth Control" at [[Vung Tau Air Base]] ]]

The ACH-47A was known as the Armed/Armored CH-47A (or A/ACH-47A) before being designated ACH-47A<ref>Wayne Mutza, ''Helicopter Gunships: Deadly Combat Weapon Systems'' (Specialty Press, 2010) p52</ref> as a U.S. Army Attack Cargo Helicopter, and unofficially referred to as "Guns A Go-Go". Four CH-47A helicopters were converted to gunships by Boeing Vertol in late 1965. Three were assigned to the 53rd Aviation Detachment in South Vietnam for testing, with the remaining one retained in the U.S. for weapons testing. By 1966, the 53rd was redesignated the 1st Aviation Detachment (Provisional) and attached to the 228th Assault Support Helicopter Battalion of the 1st Cavalry Division (Airmobile). One was lost to an accident while grounded, one to self-inflicted damage during a poor landing and one to enemy action, leaving only one by 1968. Since transport demands prevented more conversions, the survivor was returned to the United States, and the program stopped.<ref>{{cite web |url=http://www.armyaviationmuseum.org/ach-47a-guns-a-go-go/ |title=ACH-47A Guns-a-go-go |date=8 November 2016 |publisher=[[United States Army Aviation Museum]] |access-date=2021-12-20}}</ref>

The ACH-47A carried five 7.62 × 51&nbsp;mm [[M60 machine gun#M60D|M60D machine guns]] or .50-caliber (12.7&nbsp;mm) [[M2 Browning|M2HB heavy machine guns]], provided by the [[US Helicopter Armament Subsystems#CH-47 Chinook and ACH-47A .22Guns-a-GoGo.22|XM32]] and [[US Helicopter Armament Subsystems#CH-47 Chinook and ACH-47A .22Guns-a-GoGo.22|XM33]] armament subsystems, two 20&nbsp;mm [[Hispano-Suiza HS.404|M24A1 cannons]], two 19-tube {{convert|2.75|in|adj=on}} [[Folding-Fin Aerial Rocket|Folding Fin Aerial Rocket]] launchers (XM159B/XM159) or sometimes two [[U.S. aircraft gun pods#Descriptions of models|M18/M18A1]] 7.62 × 51&nbsp;mm [[gun pod]]s, and a single 40&nbsp;mm [[M75 grenade launcher]] in the [[US Helicopter Armament Subsystems#UH-1 Iroquois|XM5/M5]] armament subsystem (more commonly seen on the UH-1 series of helicopters). Rare newsreel footage shows one of the aircraft in action supporting the 8th Cavalry Regiment during an ambush at Bông Son, South Vietnam.<ref>{{Cite web|title=Newsreel Footage - Ambush at Bông San|website = [[YouTube]]|url=https://m.youtube.com/watch?v=Dz4RiBMTRKw |archive-url=https://ghostarchive.org/varchive/youtube/20211211/Dz4RiBMTRKw| archive-date=2021-12-11 |url-status=live}}{{cbignore}}</ref> The surviving aircraft, ''Easy Money'', has been restored and is on display at [[Redstone Arsenal]], Alabama.<ref>[http://www.chinook-helicopter.com/chinook/gunsagogo.html Guns a Go-Go] {{Webarchive |url=https://web.archive.org/web/20070514120610/http://www.chinook-helicopter.com/chinook/gunsagogo.html |date=14 May 2007}}. chinook-helicopter.com</ref><ref>{{cite web|url=https://www.armyaviationmuseum.org/ach-47a-guns-a-go-go/|title=Guns a Go-go|date=8 November 2016 |publisher=United States Army Aviation Museum |access-date=12 July 2022}}</ref>

===CH-47B===
[[File:CH-47B (USA 66-19138 NASA 737).jpg|thumb|NASA CH-47B]]
The CH-47B was an interim upgrade while Boeing worked on a more substantially improved CH-47C. The CH-47B was powered by two Lycoming T55-L-7C {{convert|2,850|hp|kW|abbr=on}} engines. It had a blunted rear rotor pylon, redesigned asymmetrical rotor blades, and strakes along the rear ramp and fuselage to improve flying characteristics. It could be equipped with two door-mounted M60D [[7.62×51mm NATO|7.62 mm NATO]] [[machine gun]]s on the M24 armament subsystem and a ramp-mounted M60D using the M41 armament subsystem. Some CH-47 "bombers" were equipped to drop [[tear gas]] or [[napalm]] from the rear cargo ramp onto [[Viet Cong]] bunkers. The CH-47B could be equipped with a hoist and cargo hook. The Chinook proved especially valuable in "Pipe Smoke" aircraft recovery missions. The "Hook" recovered about 12,000 aircraft valued at over $3.6&nbsp;billion during the war; 108 were built.{{citation needed|date=January 2021}}

===CH-47C===
[[File:Italian Army Boeing (Elicotteri Meridionali) CH-47C Chinook (219) Bidini-1.jpg|thumb|CH-47C of the [[Italian Army]]]]

The CH-47C featured more powerful engines and transmissions.<ref name="vector_Army_CH-47">{{usurped|1=[https://web.archive.org/web/20120623191825/http://www.vectorsite.net/avch47.html#m4 US Army CH-47A / CH-47B / CH-47C / CH-47D / SOA Chinooks]}}. Vectorsite.net, 1 July 2004.</ref> Three sub-versions were built, the first with Lycoming T55-L-7C engines delivering {{convert|2850|shp|abbr=on}}. The "Super C" had Lycoming T55-L-11 engines delivering {{convert|3750|shp|abbr=on}}, an upgraded maximum gross weight of {{convert|46000|lb|abbr=on}}, and pitch stability augmentation. The T55-L-11 engines were less reliable, as they had been hurriedly introduced to increase payload; thus, they were temporarily replaced by the more reliable Lycoming T55-L-7C. The Super C was distinguishable from the standard "C" by the uprated maximum gross weight.

The type was not approved by the FAA for civil aviation due to the nonredundant hydraulic flight boost system drive. The hydraulic system was redesigned for the succeeding CH-47D, allowing it to achieve certification as the Boeing Model 234. A total of 233 CH-47Cs were built. Canada bought eight CH-47Cs; deliveries of the type began in 1974. Receiving the Canadian designation "CH-147", these were fitted with a power hoist above the crew door; other changes included a flight engineer station in the rear cabin: operators referred to the configuration as the "Super C".<ref>{{Cite book |publisher= Casemate |isbn= 9781612002767 |last= Curtis |first= Robert F. |title= Surprised at Being Alive: An Accidental Helicopter Pilot in Vietnam and Beyond |date= 30 December 2014 |url=https://books.google.com/books?id=oUquBQAAQBAJ&pg=PA58 |page=58}}</ref> The CH-47C was used widely during the Vietnam War, eventually replacing the older [[Piasecki H-21|Piasecki H-21 Shawnee]] in the combat assault support role.{{citation needed|date=January 2021}}

===CH-47D===
[[File:Boeing CH-47D Chinook Royal Dutch Army photo-6.JPG|thumb|CH-47D cockpit]]

The CH-47D shares the same airframe as earlier models, with more powerful engines. Early CH-47Ds were powered by two T55-L-712 engines. The most common engine is the later T55-GA-714A. With its triple-hook cargo system, the CH-47D can carry heavy payloads internally and up to {{convert|26000|lb|kg|abbr=on}} (such as {{convert|40|ft|m|adj=on|disp=or|sp=us}} containers) externally. It was introduced into service in 1979. In air assault operations, it often serves as the principal mover of the 155&nbsp;mm [[M198 howitzer]], plus 30 rounds of ammunition, and an 11-man crew. The CH-47D has advanced avionics, including [[Global Positioning System]]. Nearly all US Army CH-47Ds were converted from previous A, B, and C models, a total of 472 being converted. The last U.S. Army CH-47D built was delivered to the [[U.S. Army Reserve]], located at [[Fort Hood, Texas]], in 2002.<ref>[http://www.chinook-helicopter.com/history/CH-47D_Model_History.html Boeing CH-47D model Chinook helicopters] {{Webarchive |url=https://web.archive.org/web/20080803032657/http://www.chinook-helicopter.com/history/CH-47D_Model_History.html |date=3 August 2008}}. chinook-helicopter.com</ref>

[[File:160418-N-KW492-272 (26029374493).jpg|thumb|CH-47D of the [[Spanish Army]] taking off from the {{USS|Kearsarge|LHD-3|6}}, 2016]]
In 1993, the Netherlands signed an agreement with Canada to acquire seven CH-147Cs that were no longer in use with the [[Royal Canadian Air Force|RCAF]]. These airframes where upgraded by Boeing to CH-47D standard and delivery took place between August 1995 and February 1996. Six more new CH-47Ds were delivered by Boeing in 1998 for a total of 13,<ref>{{Cite web |title=Service history of the Boeing CH-47 Chinook with the RNLAF |url=http://www.karo-aviation.nl/photo/RNLAF/pages/CH-47%20rnlaf.htm |access-date=13 February 2025 |website=karo-aviation.nl}}</ref> of which two where lost in 2005 while on duty in Afghanistan. The Dutch CH-47Ds are improved over U.S. Army CH-47Ds, including a long nose for a Bendix weather radar, a "[[glass cockpit]]", and improved T55-L-714 engines. Between 2015 and 2023, the Netherlands replaced all 11 remaining CH-47Ds with 14 newly built CH-47Fs. The six CH-47Fs that where already in service have been upgraded to the same "MYII CAAS" standard as the newly built helicopters.<ref name="defensie2">{{Cite web |date= |title=Chinook-transporthelikopter |url=https://www.defensie.nl/onderwerpen/materieel/vliegtuigen-en-helikopters/boeing-ch-47f-chinook-transporthelikopter |access-date=13 February 2025 |website=defensie.nl}}</ref>

As of 2011, Singapore has 18 CH-47D/SDs, which includes twelve "Super D" Chinooks, in service.<ref name="AFM284">{{cite journal |first=Jerry |last=Gunner |date=November 2011 |title=Chinook at 50 - World Wokka Operators - Republic of Singapore Air Force |journal=[[AirForces Monthly]] |volume=284 |page=88 |issn=0955-7091}}</ref>

In 2008, Canada purchased 6 CH-47Ds from the U.S. for the Canadian Helicopter Force Afghanistan for $252&nbsp;million.<ref>[http://www.forces.gc.ca/site/pri/2/pro-pro/Afghanistan-eng.asp Equipment Procurement – Afghanistan Air Capabilities] {{webarchive |url=https://web.archive.org/web/20090629055408/http://www.forces.gc.ca/site/pri/2/pro-pro/Afghanistan-eng.asp |date=29 June 2009}} forces.gc.ca.</ref><ref>[http://www.canadianally.com/ca/2009-01-24-eng.asp Chinooks make their debut in Afghanistan] {{webarchive |url=https://web.archive.org/web/20101031072133/http://www.canadianally.com/ca/2009-01-24-eng.asp |date=31 October 2010}} canadianally.com</ref> With 1 CH-47D lost to an accident,<ref>{{Cite news |last=Perkel |first=Colin |title=Probe of 2011 Canadian military chopper crash in Afghanistan still ongoing |access-date=22 August 2018 |date=29 September 2014 |url=https://www.theglobeandmail.com/news/national/probe-of-2011-canadian-military-chopper-crash-in-afghanistan-still-ongoing/article20819678/ |archive-url=https://web.archive.org/web/20150424225432/http://www.theglobeandmail.com/news/national/probe-of-2011-canadian-military-chopper-crash-in-afghanistan-still-ongoing/article20819678/ |archive-date=24 April 2015 |url-status=live}}</ref> the remaining five were sold in 2011 after the end of Canada's Afghanistan mission and replaced with seven CH-147Fs.<ref>{{cite news |last1=Van Westerhoven |first1=Leo |title=Canada receives first CH-147F Chinook |url=https://www.dutchdefencepress.com/canada-receives-first-ch-147f-chinook/ |access-date=22 August 2018 |work=Dutch Free Press |date=6 May 2014 |archive-url=https://web.archive.org/web/20180822051213/https://www.dutchdefencepress.com/canada-receives-first-ch-147f-chinook/ |archive-date=22 August 2018 |url-status=dead}}</ref>

The U.S. Army is surplusing many of its CH-47Ds for use in FAA restricted category.{{citation needed|date=July 2024}}

===MH-47D===
The MH-47D was developed for [[special forces]] operations and has inflight refueling capability, a [[fast rope]]-rappelling system, and other upgrades. The MH-47D was used by U.S. Army [[160th Special Operations Aviation Regiment (United States)|160th Special Operations Aviation Regiment]]. Twelve MH-47D helicopters were produced. Six were converted from CH-47As and six were converted from CH-47C models.<ref>[http://www.chinook-helicopter.com/history/MH-47D_Model_History.html Boeing MH-47D model Chinook helicopters] {{Webarchive |url=https://web.archive.org/web/20080517103008/http://www.chinook-helicopter.com/history/MH-47D_Model_History.html |date=17 May 2008}}. chinook-helicopter.com</ref>

===MH-47E===
[[File:MH-47E Chinook lands on the flight deck of the USS Kearsarge.jpg|thumb|left|A [[United States Army|US Army]] MH-47E Chinook with in-flight refuelling probe lands aboard {{USS|Kearsarge|LHD-3|6}}.]]

The MH-47E has been used by U.S. Army Special Operations. Beginning with the E-model prototype manufactured in 1991, a total of 26 Special Operations Aircraft were produced. All aircraft were assigned to 2–160th SOAR(A) "Nightstalkers", home based at [[Fort Campbell, Kentucky]]. E models were converted from CH-47C airframes. The MH-47E has similar capabilities as the MH-47D, but with increased fuel capacity similar to the CH-47SD and terrain following/terrain avoidance radar.<ref>[http://www.chinook-helicopter.com/history/MH-47E_Model_History.html Boeing MH-47E model Chinook helicopters] {{Webarchive |url=https://web.archive.org/web/20080928092813/http://www.chinook-helicopter.com/history/MH-47E_Model_History.html |date=28 September 2008}}. chinook-helicopter.com</ref>

In 1995, the [[Royal Air Force]] ordered eight [[Boeing Chinook (UK variants)#Chinook HC3|Chinook HC3s]], effectively a lower cost MH-47E for special operations. They were delivered in 2001, but never became operational due to technical issues with their [[avionics]] fit, unique to the HC3. In 2008, work started to revert the HC3s to HC2 standard, to enable them to enter service.<ref>{{cite web |url=http://www.flightglobal.com/articles/2008/06/06/224470/uk-starts-chinook-hc3-reversion-work-amid-criticism.html |title=UK starts Chinook HC3 'reversion' work, amid criticism |last=Hoyle |first=Craig |date=6 June 2008 |work=[[Flight International]] |access-date=19 January 2009 |archive-url=https://web.archive.org/web/20090714012616/http://www.flightglobal.com/articles/2008/06/06/224470/uk-starts-chinook-hc3-reversion-work-amid-criticism.html |archive-date=14 July 2009 |url-status=live}}</ref> {{as of|2017}} they were upgraded to HC5 standard with a digital automated flight control system.<ref>{{cite web |first=Dominic |last=Perry |url=https://www.flightglobal.com/helicopters/pictures-raf-welcomes-updated-chinook-hc5/123525.article |title=RAF welcomes updated Chinook HC5 |date=30 March 2017 |website=Flight Global}}</ref>

===CH-47F===
[[File:A U.S. Army CH-47F Chinook helicopter, with the 1st Battalion, 171st Aviation Regiment, Hawaii Army National Guard, carries infantrymen, with 1st Battalion, 114th Infantry Regiment, New Jersey Army National 120810-Z-KC506-117.jpg|thumb|right|CH-47F during the exercise [[Southern Accord 2012]]]]

In 2001, the CH-47F, an upgraded CH-47D, made its maiden flight. The first production model rolled out at Boeing's facility in [[Ridley Park, Pennsylvania]], and first flew on 23 October 2006.<ref>"New Boeing CH-47F takes flight", ''Aerotech News and Review'', 3 November 2006, p. 3.</ref> Upgrades included {{convert|4868|shp|lk=in|adj=on}} Honeywell engines and airframe with better integrated construction for lower maintenance requirements.<ref name="Boe_new_CH-47F">{{cite press release |url=http://boeing.mediaroom.com/2007-02-19-Boeings-New-CH-47F-Chinook-Helicopter-Begins-Operational-Test-Flights-with-U.S.-Army |title=Chinook Helicopter Begins Operational Test Flights with US Army |access-date=1 April 2015 |publisher=Boeing |date=19 February 2007 |archive-url=https://web.archive.org/web/20150402120933/http://boeing.mediaroom.com/2007-02-19-Boeings-New-CH-47F-Chinook-Helicopter-Begins-Operational-Test-Flights-with-U.S.-Army |archive-date=2 April 2015 |url-status=live}}</ref> The milled construction reduces vibration, as well as inspection and repair needs, and eliminates flexing points to increase service life.<ref>Holcomb, Henry. [http://www.philly.com/inquirer/breaking/business_breaking/20070817_FORT_CAMPBELL__Ky__-_It_was_104_degrees_on_the_Tarmac_alongside_the_big_helicopter_.html "New Look Chinook"]. ''The Philadelphia Inquirer'', 17 August 2007. [https://web.archive.org/web/20071228212017/http://www.philly.com/inquirer/breaking/business_breaking/20070817_FORT_CAMPBELL__Ky__-_It_was_104_degrees_on_the_Tarmac_alongside_the_big_helicopter_.html archive link]</ref> The CH-47F can fly at speeds of over {{convert|175|mi/h|km/h|abbr=on}} with a payload of more than {{convert|21000|lb|kg|abbr=on}}.<ref name="Boe_CH-47F_191">{{cite press release |url=http://boeing.mediaroom.com/2008-08-26-Boeing-Awarded-US-Army-Contract-for-191-CH-47F-Chinook-Helicopters |title=Boeing Awarded US Army Contract for 191 CH-47F Chinook Helicopters |access-date=1 April 2015 |date=26 August 2008 |archive-url=https://web.archive.org/web/20150402171010/http://boeing.mediaroom.com/2008-08-26-Boeing-Awarded-US-Army-Contract-for-191-CH-47F-Chinook-Helicopters |archive-date=2 April 2015 |url-status=live}}</ref> New avionics include a [[Rockwell Collins]] Common Avionics Architecture System (CAAS) cockpit, and [[BAE Systems]]' Digital Advanced Flight Control System (DAFCS).<ref name="Boe_new_CH-47F"/> [[AgustaWestland]] assembles the CH-47F under license, known as the Chinook ICH-47F, for several customers.<ref>[http://www.agustawestland.com/product/chinook-ich-47f-0 "Chinook ICH-47F."] ''AgustaWestland'', Retrieved 4 July 2013. {{webarchive |url=https://web.archive.org/web/20141106042942/http://www.agustawestland.com/product/chinook-ich-47f-0 |date=6 November 2014}}</ref> Boeing delivered 48 CH-47Fs to the U.S. Army through August 2008; at that time Boeing announced a $4.8&nbsp;billion (~${{Format price|{{Inflation|index=US-GDP|value=4800000000|start_year=2008}}}} in {{Inflation/year|US-GDP}}) contract with the Army for 191 Chinooks.<ref name="Boe_CH-47F_191"/>

[[File:CH-147F Chinook -17 (modified).jpg|thumb|left|A Canadian CH-147F at [[RIAT]] 2017 <!-- The Canadian designation is 147 not 47 -->]]
A CH-47F Block 2 is being implemented {{as of|2020|lc=y}}. The Block 2 aims for a payload of {{convert|22000|lb|kg|abbr=on}} with {{convert|4000|ft|m|abbr=on}} and {{convert|95|°F|°C|abbr=on}} high and hot hover performance, eventually increased up to {{convert|6000|ft|m|abbr=on}}, to carry the [[Joint Light Tactical Vehicle]]; maximum takeoff weight would be raised to {{convert|54000|lb|kg|abbr=on|sigfig=3}}. It has 20% more powerful [[Lycoming T55|Honeywell T55-715]] engines along with an active parallel actuator system (APAS) to enhance the digital advanced flight-control system, providing an exact torque split between the rotors for greater efficiency. A new fuel system combines the three fuel cells in each sponson into one larger fuel cell and eliminates intracell fuel transfer hardware, reducing weight by {{convert|90|kg|lb|abbr=on}} and increasing fuel capacity. Electrical capacity is increased by three 60&nbsp;kVA generators.<ref>{{cite web |last1=Warwick |first1=Graham |url=http://www.military.com/daily-news/2013/04/22/block-2-ch47f-to-tackle-payload-shortfalls.html |title=Block 2 CH-47F to Tackle Payload Shortfalls |publisher=Aviation Week's Defense Technology International edition |access-date=1 April 2015 |via=Military.com |date=22 April 2013 |archive-url=https://web.archive.org/web/20150723221657/http://www.military.com/daily-news/2013/04/22/block-2-ch47f-to-tackle-payload-shortfalls.html |archive-date=23 July 2015 |url-status=live}} ([http://aviationweek.com/awin/block-2-ch-47f-tackle-payload-shortfalls Original story] {{Webarchive |url=https://web.archive.org/web/20150403051203/http://aviationweek.com/awin/block-2-ch-47f-tackle-payload-shortfalls |date=3 April 2015}} Aviation Week )</ref><ref name="flightglobal31march15">{{cite web |last1=Trimble |first1=Stephen |url=http://www.flightglobal.com/news/articles/us-army-outlines-ch-47f-upgrades-for-100-year-lifespan-410729/ |title=US Army outlines CH-47F upgrades for 100-year lifespan |publisher=Flightglobal.com |access-date=31 March 2015 |date=31 March 2015 |archive-url=https://web.archive.org/web/20150402134931/http://www.flightglobal.com/news/articles/us-army-outlines-ch-47f-upgrades-for-100-year-lifespan-410729/ |archive-date=2 April 2015 |url-status=live}}</ref> The Advanced Chinook Rotor Blades (ACRB), derived from the cancelled [[RAH-66 Comanche]], were intended to improve lift performance in hot/high altitude conditions by 900&nbsp;kg (2,000&nbsp;lb); however, the US Army ultimately decided against implementing the ACRB due to persistent vibration during testing, Boeing denied the assertion that the vibration was a safety risk and believed it could be solved with dampeners. In addition, the aft rotor blade was stalling when in a swept back position.<ref>{{cite web |url=https://www.defensenews.com/digital-show-dailies/aaaa/2022/04/05/us-army-shelves-advanced-ch-47f-rotor-blades-due-to-issues-in-testing/ |title=US Army shelves advanced CH-47F rotor blades due to issues in testing |work=Defense News |last=Judson |first=Jen |date=5 April 2022 |access-date=19 April 2022}}</ref>

The U.S. Army plans for a Block 3 upgrade after 2025, which could include a new {{convert|6000|hp|kW|abbr=on}} class engine with boosted power capacity of the transmission and drive train developed under the future affordable turbine engine (FATE) program and a lengthened fuselage. The [[Future Vertical Lift]] program is planned to begin replacing the Army's rotorcraft fleet in the mid-2030s, initially focusing on medium-lift helicopters, thus the CH-47 is planned to be in service beyond 2060, over 100 years after the first entered service.<ref name="flightglobal31march15"/>

=== MH-47G ===
[[File:Special Boat Team takes flight with Nightstalkers (14165572918).jpg|thumb|MH-47G Chinook hoisting a [[Special Warfare Combat Crewmen|Special Boat Team 12]] [[Rigid inflatable boat|Rigid Hull Inflatable Boat (RHIB)]] during the MEATS exercise on [[Moses Lake]].]]

The MH-47G Special Operations Aviation (SOA) version is similar to the MH-47E, but features more sophisticated avionics including a digital Common Avionics Architecture System (CAAS). The CAAS is a common glass cockpit used by helicopters such as MH-60K/Ls and CH-53E/Ks.<ref>Warwick, Graham (1 April 2008). [http://www.flightglobal.com/articles/2008/04/01/222554/chinook-caas-unites-rotorcraft-cockpits.html "Chinook: CAAS unites rotorcraft cockpits"]. {{Webarchive |url=https://web.archive.org/web/20080404103218/http://www.flightglobal.com/articles/2008/04/01/222554/chinook-caas-unites-rotorcraft-cockpits.html |date=4 April 2008}}. ''Flight International''.</ref> The MH-47G also incorporates all of the new sections of the CH-47F.<ref>[http://www.boeing.com/rotorcraft/military/mh47e/index.htm "MH-47E/G Special Operations Chinook product page"]. {{webarchive |url=https://web.archive.org/web/20121221060837/http://www.boeing.com/rotorcraft/military/mh47e/index.htm|date=21 December 2012}}. Boeing.</ref>

The modernization program improves MH-47D and MH-47E Special Operations Chinooks to the MH-47G design specs. A total of 25 MH-47E and 11 MH-47D aircraft were upgraded by the end of 2003.{{citation needed|date=February 2023}} The final MH-47G was delivered to the U.S. Army Special Operations Command (USASOC) on 10 February 2011. Modernization of MH-47D/Es to the MH-47G standard is due by 2015.<ref>[http://www.defensemedianetwork.com/stories/superfast-helicopters/ "Superfast Helicopters"]. {{Webarchive|url=https://web.archive.org/web/20130331104148/http://www.defensemedianetwork.com/stories/superfast-helicopters/|date=31 March 2013}}. Defensemedianetwork.com, 25 October 2011.</ref> On 1 September 2020, Boeing announced the delivery of the first MH-47G Block II to USASOC of an initial order of 24, with a stated ultimate requirement for 69. The MH-47G Block II includes all of the improvements from the CH-47F Block II, as well as inflight refueling capability, a comprehensive defensive aids suite and low-level/adverse weather piloting aids, such as forward-looking infrared and multi-mode/terrain-following radar. It is armed with two 7.62&nbsp;mm M134 Miniguns and two M240 7.62&nbsp;mm machine guns.<ref>{{Cite web |last=Donald |first=David |date=2 September 2020 |title=First Block II Chinook for Special Operations Command |url=https://www.ainonline.com/aviation-news/defense/2020-09-02/first-block-ii-chinook-special-operations-command |publisher=AIN Online |access-date=8 July 2021}}</ref>

The British MOD confirmed that while the U.S. does not export the model, the two countries were in discussion regarding the MH-47G {{as of|2017|lc=y}}.<ref>{{cite web |last=Haxell |first=Helen |date=12 September 2017 |title=DSEI 2017: Chinook to stay in UK's future fleet |url=https://www.shephardmedia.com/news/defence-helicopter/dsei-2017-chinook-stay-uks-future-fleets/ |archive-url=https://web.archive.org/web/20170916010614/https://www.shephardmedia.com/news/defence-helicopter/dsei-2017-chinook-stay-uks-future-fleets/ |archive-date=16 September 2017 |url-status=dead |publisher=Shephard Media |access-date=15 September 2017}}</ref> On 19 October 2018, the Defense Security Cooperation Agency notified Congress of a possible sale of 16 H-47 Chinooks (Extended Range) to the UK.<ref>{{Cite press release |title=United Kingdom – H-47 Chinook (Extended Range) Helicopters and Accessories |url=http://www.dsca.mil/major-arms-sales/united-kingdom-h-47-chinook-extended-range-helicopters-and-accessories |publisher=DSCA |archive-url=https://web.archive.org/web/20181020140520/http://www.dsca.mil/major-arms-sales/united-kingdom-h-47-chinook-extended-range-helicopters-and-accessories |archive-date=20 October 2018 |url-status=dead |access-date=20 October 2018}}</ref>

===CH-47J===
[[File:CH47 ResqueDisplay.jpg|thumb|CH-47J offloads a car for a display.]]

The CH-47J is a medium-transport helicopter for the [[Japan Ground Self-Defense Force]] (JGSDF), and the [[Japan Air Self-Defense Force]] (JASDF).<ref>[http://www.helis.com/database/model/338/ Kawasaki Heavy Industries CH-47J] {{Webarchive |url=https://web.archive.org/web/20161118164613/http://www.helis.com/database/model/338/ |date=18 November 2016}} ''helis.com'' Retrieved 18 November 2016</ref> The differences between the CH-47J and the CH-47D are the engine, rotor brake and avionics, for use for general transportation, SAR and disaster activity like U.S. forces.<ref name="crawford_p48">{{cite book |title=Twenty-first century military helicopters: today's fighting gunships |last=Crawford |first=Steve |year=2003 |publisher=Zenith Imprint |isbn=978-0-7603-1504-0 |page=[https://archive.org/details/twentyfirstcentu0000craw_q2r0/page/48 48] |url=https://archive.org/details/twentyfirstcentu0000craw_q2r0/page/48}}</ref> The CH-47JA, introduced in 1993, is a long-range version of the CH-47J, fitted with an enlarged fuel tank, an AAQ-16 FLIR in a turret under the nose, and a partial glass cockpit.<ref name="crawford_p48" /><ref name="vector_foreign">{{Cite web |url=http://www.vectorsite.net/avch47_2.html#m2 |title=Chinook in commercial & foreign service |author=goebel, greg |publisher=Vectorsite.net |access-date=9 March 2011 |url-status=usurped |archive-url=https://web.archive.org/web/20101227211735/http://www.vectorsite.net/avch47_2.html |archive-date=27 December 2010}}</ref> Both versions are built under license in Japan by [[Kawasaki Heavy Industries]], who produced 61 aircraft by April 2001.<ref>{{cite web |url=http://lobby.la.psu.edu/016_Funding_for_CH47/Organizational_Statements/Boeing/Boeing_Core_Business_Activities.pdf |title=Boeing Core Business Activities |author=McGinley, Donna |publisher=Advocacy and Public Policymaking |access-date=9 March 2011 |archive-url=https://web.archive.org/web/20110612081612/http://lobby.la.psu.edu/016_Funding_for_CH47/Organizational_Statements/Boeing/Boeing_Core_Business_Activities.pdf |archive-date=12 June 2011 |url-status=dead}}</ref>

The [[Ministry of Defense (Japan)|Japan Defense Agency]] ordered 54 aircraft of which 39 were for the JGSDF and 15 were for the JASDF. Boeing supplied flyable aircraft, to which Kawasaki added full avionics, interior, and final paint.<ref name="flightglobal_ch47j">{{cite web |url=http://www.flightglobal.com/pdfarchive/view/1986/1986%20-%200851.html |title=Flight International. Number 4006. Volume 129. New-build CH-47D ready for co-production. p. 11. |work=Flight International |date=12 April 1986 |access-date=9 March 2011 |archive-url=https://web.archive.org/web/20121104123007/http://www.flightglobal.com/pdfarchive/view/1986/1986%20-%200851.html |archive-date=4 November 2012 |url-status=live}}</ref> The CH-47J model Chinook (N7425H) made its first flight in January 1986, and it was sent to Kawasaki in April.<ref>{{cite web |url=http://www.aero.pub.ro/wp-content/themes/aero.pub.ro/uploads/JANE_S_ALL_THE_WORLD_S_AIRCRAF/JANE_S_ALL_THE_WORLD_S_AIRCRAF/jawa1192.htm |title=Jane's All the World's Aircraft 1999-00. THE BOEING COMPANY. BOEING 114 and 414. US ARMY MH-47E PROCUREMENT. |author=Jackson, Paul |date=22 July 1999 |access-date=9 March 2011}}{{dead link |date=July 2017 |bot=InternetArchiveBot |fix-attempted=yes}}</ref> Boeing began delivering five CH-47J kits in September 1985 for assembly at Kawasaki.<ref name="flightglobal_ch47j" />

[[File:CH-47JA.jpg|thumb|right|A [[Japan Ground Self-Defense Force]] CH-47J, 2014]]
Over 110 had been produced by the early 21st century, including the CH-47JA model with improved fuel tanks and other upgrades.<ref>{{Cite web |title=CH-47J/JA Helicopter {{!}} Kawasaki Heavy Industries |url=https://global.kawasaki.com/en/mobility/air/helicopters/ch_47j.html |access-date=2024-06-09 |website=global.kawasaki.com}}</ref>

===HH-47===
On 9 November 2006, the [[HH-47 CSAR-X Prototype|HH-47]], a new variant of the Chinook based on the MH-47G, was selected by the [[U.S. Air Force]] as the winner of the Combat Search and Rescue (CSAR-X) competition. Four development HH-47s were to be built, with the first of 141 production aircraft planned to enter service in 2012.<ref>{{cite web |url=http://www.boeing.com/news/releases/2006/q4/061109f_nr.html |title=Boeing: Boeing Awarded U.S. Air Force Combat Search and Rescue Contract |access-date=6 February 2016 |url-status=dead |archive-url=https://web.archive.org/web/20130514055512/http://www.boeing.com/news/releases/2006/q4/061109f_nr.html |archive-date=14 May 2013}} Boeing News Release</ref> However, in February 2007 the contract award was protested and the [[GAO]] ordered the CSAR-X project to be re-bid.<ref>[http://www.aviationweek.com/aw/generic/story.jsp?id=news/GAO02287.xml&headline=Bowing%20To%20GAO,%20USAF%20Likely%20To%20Recompete%20CSAR-X&channel=defense "Bowing To GAO, USAF Likely To Recompete CSAR-X"] {{Webarchive |url=https://web.archive.org/web/20120307152746/http://www.aviationweek.com/aw/generic/story.jsp?id=news%2FGAO02287.xml&headline=Bowing%20To%20GAO%2C%20USAF%20Likely%20To%20Recompete%20CSAR-X&channel=defense |date=7 March 2012}}. ''Aviation Week'', 28 February 2007.</ref> The CSAR-X program was again terminated in 2009. In February 2010, the USAF announced plans to replace aging [[HH-60G]] helicopters, and deferred secondary combat search and rescue requirements calling for a larger helicopter.<ref>Trimble, Stephen. [http://www.flightglobal.com/articles/2010/02/24/338770/usaf-abandons-large-helicopter-for-rescue-mission-proposes-buying-112.html "USAF abandons large helicopter for rescue mission, proposes buying 112 UH-60Ms"] {{Webarchive |url=https://web.archive.org/web/20110227214739/http://www.flightglobal.com/articles/2010/02/24/338770/usaf-abandons-large-helicopter-for-rescue-mission-proposes-buying-112.html |date=27 February 2011}}. ''Flight International''. 24 February 2010.</ref><ref>[https://www.fbo.gov/index?s=opportunity&mode=form&id=e0d2f218043862f1a8f4e3c3d1200c83&tab=core&_cview=1 USAF HH-60 Personnel Recovery Recapitalization Program Sources Sought RFI] {{Webarchive |url=https://web.archive.org/web/20110721040710/https://www.fbo.gov/index?s=opportunity&mode=form&id=e0d2f218043862f1a8f4e3c3d1200c83&tab=core&_cview=1 |date=21 July 2011}}. FBO.gov, 23 March 2010.</ref> In a long process the Air Force did not choose the larger Chinook, and the [[HH-60W]] entered service by 2020 to replace the older helicopters.<ref>{{Cite web |date=2020-11-06 |title=USAF's first HH-60W Jolly Green II arrives at Moody AFB |url=https://www.af.mil/News/Article-Display/Article/2407824/usafs-first-hh-60w-jolly-green-ii-arrives-at-moody-afb/https://www.af.mil/News/Article-Display/Article/2407824/usafs-first-hh-60w-jolly-green-ii-arrives-at-moody-afb/ |access-date=2023-06-20 |website=Air Force |language=en-US}}{{dead link|date=March 2025|bot=medic}}{{cbignore|bot=medic}}</ref>

=== Sea Chinook ===
For years the [[U.S. Navy]] has been operating different versions of the single-rotor [[CH-53]] helicopter as its heavy-lift helicopter. CH-47s regularly conduct ship-based operations for U.S. Special Forces and other international operators.<ref>{{Cite web|url=https://www.wearethemighty.com/gear-tech/navy-special-ops-helicopter|title = Why the Navy may look to this Army workhorse for special ops|date = 29 April 2020}}</ref> Due to budget issues, technical problems and delays with [[CH-53K]], the director of the Pentagon's cost assessment office directed US Navy to consider maritime versions of CH-47. Naval versions must be protected against the corrosive seaborne environment and be able to operate from aircraft carriers and amphibious ships.<ref>{{Cite web|url=https://www.defensenews.com/opinion/commentary/2020/02/03/replacing-us-marines-ch-53k-helos-with-ch-47f-choppers-is-a-poor-idea/|title=Replacing US Marine's CH-53K helos with CH-47F choppers is a poor idea|first=Scott|last=Trail|date=3 February 2020|website=Defense News}}</ref><ref>{{Cite news|url=https://www.bloomberg.com/news/articles/2019-05-06/pentagon-review-pits-boeing-vs-lockheed-for-marine-helicopters|title = Pentagon Review Pits Boeing vs. Lockheed for Marine Helicopters|newspaper = Bloomberg.com|date = 6 May 2019}}</ref>

===Other export models===
[[File:HMS QUEEN ELIZABETH LEAVES PORTSMOUTH FOR HELICOPTER TRIALS MOD 45164124.jpg|thumb|RAF Chinooks onboard {{HMS|Ocean|L12|6}}]]
* [[Boeing Chinook (UK variants)|Specific British variants of the Chinook]] serving with the [[Royal Air Force]] are designated Chinook HC1 (based on CH-47C but later upgraded), Chinook HC2 and HC2A (the upgraded CH-47C and new CH-47D respectively). Additional types in RAF service include HC3 (intended as low cost MH-47E for special forces use but converted to HC.2 after years of delay in achieving airworthiness) HC.4 and HC.5 (upgraded HC.2 and HC.3) and HC.6/HC.6A (based on CH-47F).
* The export version of the CH-47C Chinook for the Italian Army was designated "CH-47C Plus".
* The HH-47D is a search and rescue version for the [[Republic of Korea Air Force]]. 
* The CH-47DG is an upgraded version of the CH-47C for Greece. 
* While the CH-47SD (also known as the "Super D") is a modified variant for Singapore of the CH-47D, with extended range fuel tanks and higher payload carrying capacity; the CH-47SD is in use by the [[Republic of Singapore Air Force]], [[Hellenic Army]] and the [[Republic of China Army]].

===Civilian models===
{{more citations needed section|date=January 2021}}

* [[File:British Airways Helicopters Boeing 234 G-BISP.jpg|thumb|[[British Airways Helicopters]] 234LR at [[Aberdeen Airport]] in 1985]]'''Model 234LR (long range)''': Commercial transport helicopter. The Model 234LR can be fitted out as an all-passenger, all-cargo, or cargo/passenger transport helicopter.<ref name="m234">{{cite web|url=https://www.boeing.com/history/products/model-234-chinook.page|access-date=2021-12-20|website=Boeing.com|url-status=dead|archive-url=https://web.archive.org/web/20190323205620/https://www.boeing.com/history/products/model-234-chinook.page|archive-date=2019-03-23|title=Model 234 Chinook}}</ref>
* '''Model 234ER (extended range)''': Commercial transport version.
* '''Model MLR (multi-purpose long range)''': Commercial transport version.
* '''Model 234UT (utility transport)''': Utility transport helicopter.<ref name="m234"/>
* '''Model 414''': The Model 414 is the international export version of the CH-47D. It is also known as the ''CH-47D International Chinook''.
* '''CU-47''': Built by Unical from parts from ex-Canadian Forces CH-47D/CH-147D for [[Coulson Aviation]] to be used for aerial firefighting.<ref>{{Cite web |url=https://skiesmag.com/features/coulsons-cu-47-fire-fight/ |title=Coulson's CU-47 is ready for the fire fight }}</ref>

===Derivatives===
[[File:Boeing-Vertol BV-347 Chinook (65-7992) (10508872726).jpg|thumb|The winged BV-347]]
In 1969, work on the experimental [[Boeing Vertol BV-347|BV-347]] was begun. It was a CH-47A with a lengthened fuselage, four-blade rotors, detachable wings mounted on top of the fuselage and other changes. It first flew on 27 May 1970 and was evaluated for a few years.<ref name=Vector_CH-47_deriv>Goebel, Greg. {{usurped|1=[https://web.archive.org/web/20100626000119/http://www.vectorsite.net/avch47_2.html#m4 "ACH-47A Gunship / Model 347 / XCH-62 HLH (Model 301) / Model 360"]}}. Vectorsite.net, 1 December 2009.</ref>

In 1973, the Army contracted with Boeing to design a "Heavy Lift Helicopter" (HLH), designated [[Boeing Vertol XCH-62|XCH-62A]]. It appeared to be a scaled-up CH-47 without a conventional body, in a configuration similar to the [[S-64 Skycrane]] ([[CH-54 Tarhe]]), but the project was canceled in 1975. The program was restarted for test flights in the 1980s and was again not funded by Congress.<ref name=Vector_CH-47_deriv/> The scaled-up model of the HLH was scrapped in late 2005 at [[Fort Rucker]], Alabama.<ref>{{cite web |url=http://www.helis.com/70s/h_h62.php |title=XCH-62 with photo |access-date=13 November 2014 |archive-url=https://web.archive.org/web/20141113190853/http://www.helis.com/70s/h_h62.php |archive-date=13 November 2014 |url-status=dead}}</ref>
{{clear}}

==Operators==
[[File:Boeing CH-47 Chinook Users.png|thumb|upright=1.35|Boeing CH-47 Chinook operators{{legend|#5492c0|Current}}{{legend|#c82933|Former}}]]
[[File:An Australian Army CH-47 Chinook Helicopter lifts a front loader off the flight line at Special Operations Task Force Southeast's FOB Camp Ripley.jpg|thumb|Australian Chinook at Camp Riley, Afghanistan, 2012]]

;{{AUS}}
{{see also|Boeing CH-47 Chinook in Australian service}}
*[[Australian Army]] – operates 14 CH-47F Chinooks.<ref name="World Air Forces 2014">{{cite web |last= |first= |url= http://www.flightglobal.com/airspace/media/reports_pdf/emptys/108161/world-air-forces-2014.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.flightglobal.com/airspace/media/reports_pdf/emptys/108161/world-air-forces-2014.pdf |archive-date=2022-10-09 |url-status=live |title= World Air Forces 2014 |publisher= Flightglobal Insight |year= 2014 |doi= |accessdate= 14 February 2014}}</ref>
;{{CAN}}
*[[Royal Canadian Air Force]] – 14 CH-147F Chinooks as of January 2025.<ref name="Military Balance 2025">{{cite book |title=The Military Balance |date=2025 |publisher=[[International Institute for Strategic Studies]] |isbn=978-1-041-04967-8}}</ref>{{rp|32}} <ref name="World Air Forces 2014"/>
[[File:A ROCA CH-47 with a national flag of the Republic of China (Taiwan) at the National Day celebration ceremony 2021-10-10.jpg |thumb |Republic of China Army CH-47 during the 2021 [[National Day of the Republic of China|National Day]] celebration ceremony]]
;{{TWN-ROC}}
*[[Republic of China Army]]<ref name="World Air Forces 2014"/>
*[[National Fire Agency]]<ref>{{cite web |url=http://www.taiwanairpower.org/nasc/index.html |title= National Airborne Service Corps (NASC) |publisher= taiwanairpower.org |date= |accessdate= 12 February 2013}}</ref>
;{{EGY}}
*[[Egyptian Air Force]]<ref name="World Air Forces 2014"/>
;{{DEU}}
*[[German Air Force]] – 60 ordered.<ref name=":0" />
;{{GRC}}
*[[Hellenic Army]]<ref>{{cite web |last1=Jennings |first1=Gareth |title=US approves additional CH-47Ds for Greece |url=http://www.janes.com/article/69964 |website=IHS Jane's 360 |accessdate=3 May 2017 |archiveurl=https://archive.today/20170503220520/http://www.janes.com/article/69964/us-approves-additional-ch-47ds-for-greece |archivedate= 3 May 2017 |date=2 May 2017 |url-status=dead}}</ref><ref name="World Air Forces 2014"/>
;{{IND}}
[[File:Induction of Boeing Chinook - CH 47 F(I) helicopters in Indian Air Force.jpg|thumb|Two Indian Air Force CH-47F Chinooks in March 2019]]
*[[Indian Air Force]]<ref name="World Air Forces 2014"/><ref>{{cite web |url=https://timesofindia.indiatimes.com/pmtoinavigation/17013191.cms |title= Boeing bags $1bn IAF chopper deal |publisher= indiatimes.com |date=Oct 30, 2012 |access-date=12 February 2013}}</ref><ref>{{Cite news |url=https://timesofindia.indiatimes.com/india/first-four-ch-47f-chinooks-for-iaf-arrive-in-gujarat/articleshow/67927381.cms |title=Boeing delivers first four Chinook helicopters for IAF - Times of India |website=The Times of India |date=10 February 2019 |access-date=2019-02-10}}</ref><ref>{{cite news |url=https://www.financialexpress.com/defence/indian-air-force-gets-15-deadly-and-heavyweight-chinook-helicopters-to-help-operations-in-the-northeast-region/1972582/ |title=Indian Air Force gets 15 deadly and heavyweight Chinook Helicopters! To help operations in the Northeast Region |date=27 May 2020 |access-date=4 April 2022 |archive-url=https://web.archive.org/web/20220308183850/https://www.financialexpress.com/defence/indian-air-force-gets-15-deadly-and-heavyweight-chinook-helicopters-to-help-operations-in-the-northeast-region/1972582/ |archive-date=8 March 2022}}</ref>
;{{IRN}}
*[[Islamic Republic of Iran Army]]<ref name="World Air Forces 2014"/>
;{{ITA}}
*[[Italian Army]]<ref name="World Air Forces 2014"/>
;{{JPN}}
*[[Japan Air Self-Defense Force]]<ref name="World Air Forces 2014"/> operates 15 CH-47Js as of March 2022.<ref name="doj2022">[https://web.archive.org/web/20221206231056/https://www.mod.go.jp/j/publication/wp/wp2022/pdf/R04shiryo.pdf Defence of Japan 2022 (Annual White Paper). p.53.] Japan Ministry of Defence</ref>
*[[Japan Ground Self-Defense Force]]<ref name="World Air Forces 2014"/> operates 47 CH-47J/JAs as of March 2022.<ref name="doj2022"/>
[[File:2015.4.15 해군3함대 합동재난대응훈련 Republic of Korea Navy (16957001357).jpg|thumb|Republic of Korea Army Chinook deploying rescue divers in April 2015]]
;{{ROK}}
*[[Republic of Korea Army]]<ref name="World Air Forces 2014"/><ref>{{cite web |url=http://www.airliners.net/photo/South-Korea--/Boeing-CH-47D-Chinook/2040855/L/&sid=fdf1e45d5f45f6584bc12b12f65f8440 |title=Boeing Vertol CH-47 Chinook |publisher=Demand media |date= |accessdate=2012-12-29}}</ref>
[[File:CH-47 (12549288513).jpg |thumb|Libyan Air Force CH-47 in 2009]]
;{{LBY}}
*[[Libyan Air Force]]<ref name="World Air Forces 2014"/>
;{{MAR}}
*[[Royal Moroccan Air Force]]<ref name="World Air Forces 2014"/>
;{{NLD}}
*[[Royal Netherlands Air and Space Force]]<ref>{{cite web |last1=Jennings |first1=Gareth |title=Netherlands signs for two more Chinooks |url=http://www.janes.com/article/69986 |website=IHS Jane's 360 |accessdate=3 May 2017 |archiveurl=https://archive.today/20170503225654/http://www.janes.com/article/69986/netherlands-signs-for-two-more-chinooks |archivedate= 3 May 2017 |date=2 May 2017 |url-status=dead}}</ref><ref name="World Air Forces 2014"/>
;{{SAU}}
* [[Royal Saudi Land Forces]]<ref>{{cite web |url=https://www.rotorandwing.com/2018/05/29/boeing-adds-26-million-saudi-ch-47f-sales-contract/ |title=Boeing Adds $26M To Saudi CH-47F Sales Contract |publisher=rotorandwing.com |date=29 May 2018 |accessdate=4 August 2018 |archive-date=20 August 2018 |archive-url=https://web.archive.org/web/20180820074846/https://www.rotorandwing.com/2018/05/29/boeing-adds-26-million-saudi-ch-47f-sales-contract/ |url-status=dead}}</ref>
;{{SGP}}
*[[Republic of Singapore Air Force]]<ref name="World Air Forces 2014"/><ref name="AFM284"/>
[[File:Chinook (5083455644).jpg|thumb|Spanish C-47D in 2010]]
;{{ESP}}
*[[Spanish Army Airmobile Force]]<ref name="World Air Forces 2014"/><ref>{{cite web |last1=Waldron |first1=Greg |title=Boeing to upgrade Spain CH-47D fleet to -F standard |url=https://www.flightglobal.com/news/articles/boeing-to-upgrade-spain-ch-47d-fleet-to-f-standard-454783/ |website=Flight Global |accessdate=4 January 2019 |archiveurl=https://archive.today/20190104213912/https://www.flightglobal.com/news/articles/boeing-to-upgrade-spain-ch-47d-fleet-to-f-standard-454783/ |archivedate=4 January 2019 |location=Singapore |date=4 January 2019 |url-status=live}}</ref>
;{{TUR}}
*[[Turkish Army]]
;{{ARE}}
*[[United Arab Emirates Air Force]]<ref name="World Air Forces 2014"/><ref>{{cite web |url=http://www.airliners.net/photo/United-Arab-Emirates/Boeing-CH-47F-Chinook/1869373/L/&sid=d086129f19126566a76638fc33691844 |title=Boeing Vertol CH-47 Chinook |publisher=Demand media |date= |accessdate=2012-12-12}}</ref>
[[File:Chinook Mali MINUSMA.jpg|thumb|A Netherlands Air Force Chinook in Mali]]
;{{GBR}}
{{See also|Boeing Chinook (UK variants)}}
*[[Royal Air Force]]<ref name="World Air Forces 2014"/>
;{{USA}}
*[[United States Army]] operates 465 CH-47F Chinook as of January 2025.<ref name="Military Balance 2025"/>{{rp|37}}
*[[Army National Guard]]<ref name=" Boeing CH-47D/F ">{{cite web | title =Boeing CH-47D/F | publisher =Boeing.com | url =http://www.boeing.com/companyoffices/gallery/images/military/rotorcraft/ch47d/US-Army-Chinook-2.html | accessdate =2013-02-12 | url-status =dead | archiveurl =https://web.archive.org/web/20121010195043/http://www.boeing.com/companyoffices/gallery/images/military/rotorcraft/ch47d/US-Army-Chinook-2.html | archivedate =2012-10-10}}</ref>
*[[United States Army Reserve]]<ref name=" Boeing CH-47D/F "/>

===Former operators===
;Argentina
*[[Argentine Air Force]]<ref>{{cite web |url=http://www.helis.com/database/modelorg/139/ |title= Fuerza Aerea Argentina CH-47C |publisher= |date= |accessdate=31 July 2014}}</ref>
*[[Argentine Army]]<ref>{{cite web |url=http://www.helis.com/database/modelorg/12/ |title= Comando de Aviacion de Ejercito Argentino CH-47C |publisher= |date= |accessdate=12 February 2013}}</ref>

;Australia
*[[Royal Australian Air Force]]<ref>{{cite web |url= http://www.helis.com/database/modelorg/644/ |title= Royal Australian Air Force CH-47C |publisher= |date= |accessdate=12 February 2013}}</ref> (later transferred to the Australian Army)

;Indonesia
*[[Indonesian National Board for Disaster Management]]<ref>{{Cite web |date=20 August 2020 |title=BNPB Datangkan Chinook dan Black Hawk Untuk Tangani Karhutla |url=https://www.bpbnnews.id/2020/08/20/bnpb-datangkan-chinook-dan-black-hawk-untuk-tangani-karhutla/ |url-status=usurped |archive-url=https://web.archive.org/web/20201126093353/https://www.bpbnnews.id/2020/08/20/bnpb-datangkan-chinook-dan-black-hawk-untuk-tangani-karhutla/ |archive-date=26 November 2020 |access-date=11 December 2020 |website=bpbnnews.id |language=id}}</ref><ref>{{Cite web |date=18 August 2020 |title=BNPB Datangkan 2 Helikopter Buatan AS untuk Tangani Bencana |url=https://www.inews.id/news/nasional/bnpb-datangkan-2-helikopter-buatan-as-untuk-tangani-bencana |access-date=11 December 2020 |website=inews.id |language=id}}</ref>

;South Vietnam
*[[Republic of Vietnam Air Force]]<ref>{{cite web |url=http://www.flightglobal.com/pdfarchive/view/1971/1971%20-%201058.html |title= World Air Forces 1971 pg 940 |publisher= flightglobal.com |date= |accessdate=14 February 2014}}</ref>

;Thailand
*[[Royal Thai Army]]

;United Kingdom
*[[British Airways Helicopters]]<ref name="40th Years Retrospective: The Helicopter Industry’s [Heyday]">{{cite web |last= |first= |authorlink= |title= 40th Years Retrospective: The Helicopter Industry's [Heyday] |publisher= aviationtoday.com |date= |url= http://www.aviationtoday.com/regions/africa/40th-Years-Retrospective-The-Helicopter-Industrys-Heyday_14520.htm |doi= |accessdate= 2013-02-13 |archive-date= 25 October 2016 |archive-url= https://web.archive.org/web/20161025234620/http://www.aviationtoday.com/regions/africa/40th-Years-Retrospective-The-Helicopter-Industrys-Heyday_14520.htm |url-status= dead}}</ref><ref>{{cite web |url=http://www.helis.com/database/modelorg/1541/ |title=British Airways Helicopters Boeing 234L |publisher= |date= |accessdate=12 February 2013}}</ref>

;United States
*[[NASA]]<ref>{{cite web |url= https://history.nasa.gov/SP-3300/ch9.htm |title= SP-3300 Flight Research at Ames, 1940-1997 |date= January 1998 |publisher= nasa.gov |accessdate=12 February 2013 |last1= Borchers |first1= Paul F. |last2= Franklin |first2= James A. |last3= Fletcher |first3= Jay W.}}</ref>

;Vietnam
*[[Vietnam People's Air Force]]<ref>{{cite web |url=http://www.flightglobal.com/pdfarchive/view/1987/1987%20-%202555.html |title= World Air Forces 1987 pg 105 |publisher= flightglobal.com |date= |accessdate=14 February 2014}}</ref>

== Accidents ==
{{see also|Boeing Chinook (UK variants)#Notable incidents and accidents}}
<!-- This section is for aviation incidents and accidents. Please limit entries to notables ones. See [[WP:Air/PC]] for guidelines. Also, UK Chinook accidents are covered at [[Boeing Chinook (UK variants)]], not here. A complete listing of CH-47 incidents can be found at http://www.armyaircrews.com/chinook.html -->
*On 4 May 1966, a CH-47A crashed near [[Di Linh]], [[Lâm Đồng Province]] killing all 20 on board.<ref>{{cite web|url=https://aviation-safety.net/wikibase/76004|title=Boeing CH-47A Chinook 64-13138, o4 May 1966|publisher=Aviation Safety Network|accessdate=19 February 2021}}</ref>
* On 26 December 1967, a CH-47A carrying 33 military passengers and crew crashed in a landing descent at Phu Cat AFB, Binh Dinh Province, South Vietnam killing 8 of those on board.<ref>{{Cite web|url=http://www.chinook-helicopter.com/history/aircraft/A_Models/66-19006/66-19006.html|title = Boeing CH-47A Chinook helicopter 66-19006}}</ref>
* On 6 May 1969 a CH-47 carrying 83 people crashed {{convert|3|mi}} southwest of [[Phước Vĩnh Base Camp]], South Vietnam, killing 40 of those on board.<ref>{{cite web|url=https://www.vietnam.ttu.edu/reports/images.php?img=/images/739/7390114001a.pdf|title=Headquarters MACV Monthly Summary May 1969|publisher=Headquarters United States Military Assistance Command, Vietnam|date=1 October 1969|access-date=25 February 2020|page=18}}{{PD-notice}}</ref>
* On 18 August 1971, CH-47A airframe {{not a typo|66-19023}}<ref>{{cite web | url=http://www.chinook-helicopter.com/history/aircraft/A_Models/66-19023/66-19023.html | title=Boeing CH-47A Chinook helicopter 66-19023 }}</ref> was operated by the 4th Aviation Company, 15th Aviation Group. The helicopter was transporting 33 soldiers of the Heavy Mortar Platoon, 2nd Battalion, [[4th Infantry Regiment (United States)|4th Infantry Regiment]], [[56th Field Artillery Brigade]] from battalion headquarters in [[Ludwigsburg]] to [[Grafenwoehr Training Area|Grafenwöhr Training Area]] for live fire training exercises. Fatigue failure of the rear rotor blade led to its separation causing structural damage resulting in the crash and explosion that killed all 37 on board, including four crew members. A memorial plaque that was placed near the crash site in the forest outside [[Pegnitz (town)|Pegnitz]] was stolen in 2009.<ref>{{cite news |title=37 GIs Die as Copter Falls in Germany |newspaper=Chicago Tribune |date=19 August 1971 |url=http://archives.chicagotribune.com/1971/08/19/page/30/article/37-gis-die-as-copter-falls-in-germany |access-date=30 June 2017 |archive-url=https://web.archive.org/web/20150924004419/http://archives.chicagotribune.com/1971/08/19/page/30/article/37-gis-die-as-copter-falls-in-germany/ |archive-date=24 September 2015 |url-status=live}}</ref><ref>{{cite news |title=Tafel an Hubschrauber-Gedenkstätte verschwunden |trans-title=Disappeared Plaque on Helicopter Memorial |work=Nordbayern online |date=14 August 2009 |url=http://www.nordbayern.de/region/pegnitz/tafel-an-hubschrauber-gedenkstatte-verschwunden-1.564167 |language=de |access-date=30 June 2017 |archive-url=https://web.archive.org/web/20170820204924/http://www.nordbayern.de/region/pegnitz/tafel-an-hubschrauber-gedenkstatte-verschwunden-1.564167 |archive-date=20 August 2017 |url-status=live}}</ref>
* On 28 November 1971, a CH-47C carrying five crew and 28 soldiers from the 101st Airborne Division on a flight from Da Nang to [[Phu Bai Combat Base]], South Vietnam crashed into high ground killing all on board.<ref>{{cite web|url=https://aviation-safety.net/wikibase/76002|title=Accident Boeing CH-47C Chinook 68-15866|publisher=Aviation Safety Network|access-date=16 November 2020}}</ref>
* On 18 October 1974, a CH-47C, US serial 74-22058 assigned 147001 but was never marked with Canadian Forces. The aircraft was lost on its delivery flight to Canada following gear failure in main combining gear box, caused by undetected metal infraction in gear blank before machining. This failure led to drive shaft failure and loss of synchronization and resulted in five fatalities. After a lengthy litigation, it was replaced by 147009.{{citation needed|date=November 2019}}
* On 11 September 1982 at an airshow in [[Mannheim, Germany]], a U.S. Army Chinook (serial number 74-22292) carrying [[parachuting|parachutists]] crashed, killing 46&nbsp;people. The crash was later found to have been caused by an accumulation of ground [[walnut]] shell grit used for cleaning machinery, which blocked lubrication from reaching transmission bearings.<ref>[https://news.bbc.co.uk/2/hi/europe/2156004.stm Air show safety in the spotlight], BBC, 27 July 2002.</ref><ref>{{cite web |url=http://bulk.resource.org/courts.gov/c/F2/769/769.F2d.115.84-1446.html |title=''Ursula J. Schoenborn v. The Boeing Company'', 769 F.2d 115 (3d Cir. 1985) – a case in the US Court of Appeals for the Third Circuit |work=resource.org |access-date=30 April 2017 |url-status=dead |archive-url=https://web.archive.org/web/20081201062955/http://bulk.resource.org/courts.gov/c/F2/769/769.F2d.115.84-1446.html |archive-date=1 December 2008}}</ref> The accident resulted in the eventual discontinuation of the use of walnut grit as a cleaning agent.
* On 4 February 1985, a [[Royal Australian Air Force]] (RAAF) CH-47C (A15-001) crashed into [[Perseverance Dam]], [[Toowoomba]], [[Queensland, Australia]]. The [[Royal Air Force]] (RAF) exchange pilot was rescued from the submerged cockpit but later died in hospital.<ref>{{cite web|url=https://www.airforce.gov.au/raafmuseum/research/aircraft/series3/A15.htm|title=RAAF Museum: Royal Australian Air Force|publisher=Department of Defence|work=airforce.gov.au|access-date=30 April 2017|archive-url=https://web.archive.org/web/20170401011051/http://airforce.gov.au/raafmuseum/research/aircraft/series3/A15.htm|archive-date=1 April 2017|url-status=live}}</ref>
* On 6 November 1986, a [[British International Helicopters]] [[1986 British International Helicopters Chinook crash|Chinook crashed]] on approach to Sumburgh Airport, Shetland Islands resulting in the loss of 45 lives and the withdrawal of the Chinook from crew-servicing flights in the [[North Sea]].<ref>[http://www.aaib.dft.gov.uk/publications/formal_reports/2_1988_g_bwfc.cfm Report No: 2/1988. Report on the accident to Boeing Vertol (BV) 234 LR, G-BWFC 2.5 miles east of Sumburgh, Shetland Isles, 6 November 1986] {{webarchive|url=https://archive.today/20120716010827/http://www.aaib.dft.gov.uk/publications/formal_reports/2_1988_g_bwfc.cfm |date=16 July 2012}}</ref>
* On 1 March 1991, Major [[Marie Therese Rossi Cayton]] was killed when her U.S. Army Chinook helicopter crashed into an unlit [[microwave tower]] during a [[dust storm]]. She was the first American woman to fly in combat, during Desert Storm in 1991.<ref>{{cite web|url=http://www.arlingtoncemetery.net/mariethe.htm|title=Marie Therese Rossi Cayton|work=Arlington National Cemetery site|access-date=21 June 2009|archive-url=https://web.archive.org/web/20090502024909/http://www.arlingtoncemetery.net/mariethe.htm|archive-date=2 May 2009|url-status=dead}}</ref>
* On 2 June 1994, an RAF CH-47 carrying 25 British MI5, police, and military intelligence experts and 4 crew, flown from Northern Ireland to Scotland for a conference, [[1994 Scotland RAF Chinook crash|crashed on the Mull of Kintyre]]
* On 30 October 1997, a civilian BV234UT operated by Columbia Helicopters (registration C-FHFH) engaged in logging operations crashed on [[Vancouver Island]], [[Canada]], killing both of the pilots. The investigation determined that the helicopter lost yaw control due to failure of flight control computer.
* On 29 May 2001, a [[Republic of Korea Army]] (ROK Army) CH-47D installing a sculpture onto [[Olympic Bridge]] in [[Seoul]], South Korea failed to unlatch the sculpture. The helicopter's rotors struck the monument; then the fuselage hit and broke into two. One section crashed onto the bridge in flames and the other fell into the river. All three crew members on board died.<ref>{{cite web|url=http://english.people.com.cn/english/200105/30/eng20010530_71388.html |title=S. Korean Helicopter Crashes into Bridge, 3 Killed. |work=People's Daily, 30 May 2001. |archive-url=https://web.archive.org/web/20091124045333/http://english.people.com.cn/english/200105/30/eng20010530_71388.html |archive-date=24 November 2009 |url-status=dead}}</ref><ref>[https://www.telegraph.co.uk/news/worldnews/asia/southkorea/1332190/Crew-killed-as-Korean-helicopter-hits-sculpture.html "Crew killed as Korean helicopter hits sculpture"] {{Webarchive|url=https://web.archive.org/web/20180222170630/http://www.telegraph.co.uk/news/worldnews/asia/southkorea/1332190/Crew-killed-as-Korean-helicopter-hits-sculpture.html |date=22 February 2018}}. ''The Daily Telegraph'', 30 May 2001.</ref>
* On 22 February 2002, a U.S. Army special forces MH-47E crashed at sea in the Philippines, killing all ten U.S. soldiers on board.<ref>[http://www.chinook-helicopter.com/news/Korea/Philippines/philippines_chinook_crash.html A Crash in Philippines] {{Webarchive|url=https://web.archive.org/web/20120525021924/http://www.chinook-helicopter.com/news/Korea/Philippines/philippines_chinook_crash.html |date=25 May 2012}}. chinook-helicopter.com,</ref>
* On 11 September 2004, a [[Hellenic Army Aviation]] CH-47SD crashed into the sea off [[Mount Athos]]. All 17 people on board were killed, including four senior figures in the [[Greek Orthodox Church of Alexandria]].<ref>Bamber, David. [https://www.telegraph.co.uk/news/worldnews/europe/greece/1471570/Four-Orthodox-church-leaders-die-in-air-crash.html "Four Orthodox church leaders die in air crash".] {{Webarchive|url=https://web.archive.org/web/20181107041227/https://www.telegraph.co.uk/news/worldnews/europe/greece/1471570/Four-Orthodox-church-leaders-die-in-air-crash.html |date=7 November 2018}} ''The Daily Telegraph'', 12 September 2004.</ref>
* On 6 April 2005, the U.S. Army CH-47D known as "Big Windy 25" crashed during a [[sandstorm]] near [[Ghazni, Afghanistan]], killing all eighteen aboard (fifteen soldiers and three contractors).<ref>{{cite news |url=http://www.seattletimes.com/seattle-news/washington-man-presumed-dead-in-afghanistan-crash/ |title=Washington man presumed dead in Afghanistan crash |agency=Associated Press |date=10 April 2005 |newspaper=The Seattle Times |access-date=26 July 2017 |archive-url=https://web.archive.org/web/20181107003957/https://www.seattletimes.com/seattle-news/washington-man-presumed-dead-in-afghanistan-crash/ |archive-date=7 November 2018 |url-status=live}}</ref> The pilots had been disoriented by the dust storm.<ref>{{cite news |url=http://archives.starbulletin.com/2005/07/29/news/index8.html |title=Helicopter crash caused by dust storm, Army says |author=Kakesako, Gregg K. |date=29 July 2005 |newspaper=Honolulu Star-Bulletin |access-date=26 July 2017 |archive-url=https://web.archive.org/web/20100808201727/http://archives.starbulletin.com/2005/07/29/news/index8.html |archive-date=8 August 2010 |url-status=dead}}</ref>
* On 7 January 2013, a BV-234 N241CH owned by [[Columbia Helicopters]], crashed shortly after taking off from the airport in [[Pucallpa]], [[Coronel Portillo Province]], Peru. All seven crew members were killed.<ref>[http://www.oregonlive.com/pacific-northwest-news/index.ssf/2013/01/helicopter_crash_our_employees.html "Portland-area native among 7 killed in Peru helicopter crash"] {{Webarchive|url=https://web.archive.org/web/20140222201600/http://www.oregonlive.com/pacific-northwest-news/index.ssf/2013/01/helicopter_crash_our_employees.html |date=22 February 2014}}. ''The Oregonian'', 8 January 2013.</ref>
* On 20 June 2023, a [[Royal Canadian Air Force]] CH-147F crashed in the [[Ottawa River]] near [[CFB Petawawa]]. The helicopter belonged to the [[450 Tactical Helicopter Squadron]]. Two crew members died while the other two were hospitalized with non-life-threatening injuries. Accident Investigators revealed that the cause of the crash was the crew suffering from ‘spacial disorientation’ causing the aircraft to hit the water.<ref>{{cite news|url=https://www.cbc.ca/news/canada/ottawa/petawawa-helicopter-crash-ottawa-river-news-updates-1.6882992|title=2 missing helicopter crew members found dead|newspaper=Canadian Broadcasting Corporation|date=21 June 2023|access-date=22 June 2022}}</ref>
{{clear}}

==Aircraft on display==
{{For|British variants on display|Boeing Chinook (UK variants)#Aircraft on display{{!}}British Chinooks on display}}
[[File:Front view of Bravo November on display at RAF Museum Cosford in September 2022.jpg|thumb|The famed [[Bravo November]] helicopter, now retired and on display at RAF Museum Cosford (shown here in 2022)]]
[[File:CH-47D Chinook NAFMC 1.jpg|thumb|CH-47D in Canadian museum]]

===Argentina===
*H-91 - CH-47C on display at the [[Museo Nacional de Aeronáutica de Argentina]] in [[Morón, Buenos Aires]].<ref>{{cite web|url=http://aerialvisuals.ca/AirframeDossier.php?Serial=38618|title=s/n H-91 FAA|website=AerialVisuals|access-date=26 July 2019}}</ref>

===Australia===
*A15-104 - CH-47D on display at the [[Oakey Army Aviation Centre|Australian Army Flying Museum]] in [[Oakey, Queensland|Oakey]], [[Queensland]].<ref>{{cite web|url=https://www.helis.com/database/cn/9373/|title=c/n M.3453|website=helis.com|access-date=27 July 2019}}</ref>

===Canada===
*147201 - CH-47D on display at the [[National Air Force Museum of Canada]] in [[Trenton, Ontario|Trenton]], [[Ontario]].<ref>{{cite web|url=http://airforcemuseum.ca/eng/?page_id=1064|archive-url=https://web.archive.org/web/20191225113352/http://airforcemuseum.ca/eng/?page_id=1064|url-status=dead|archive-date=25 December 2019|title=Chinook|website=National Air Force Museum of Canada|access-date=26 July 2019}}</ref>
*147206 - CH-47D preserved as a gate guardian at [[Garrison Petawawa|CFB Petawawa]].<ref>{{cite web|url=https://www.helis.com/database/news/ch-147d_museum/|title=Canadian CH-147D Chinooks to Museums|website=helis.com|access-date=27 July 2019}}</ref>

===Italy===
[[File:Boeing CH-47C Chinook Italy - Army, Volandia Aviation Museum, Malpensa, Italy PP1310907460.jpg|thumb|right|CH-47C on display at Volandia]]
*MM80840 - CH-47C on display at [[Volandia]] in [[Somma Lombardo]].{{citation needed|date=November 2025}}

===United Kingdom===
*83-24104 - Former US Army CH-47D forward section on display at [[Royal Air Force Museum London]], modified to represent "[[Bravo November]]".<ref>{{cite web|url=https://www.rafmuseum.org.uk/research/collections/boeing-ch47d-chinook-forward-fuselage-section/|title=Boeing CH47D Chinook (Forward fuselage section)|website=Royal Air Force Museum|access-date=27 July 2019}}</ref>

===United States===
*59-4984 - YCH-47B on display at the [[U.S. Army Transportation Museum]] in [[Fort Eustis]], [[Virginia]].<ref>{{cite web|url=http://www.chinook-helicopter.com/history/aircraft/A_Models/59-04984/59-04984.html|title=59-04984|website=chinook-helicopter.com|access-date=26 July 2019}}</ref>
*60-3451 - CH-47A on display at the [[United States Army Aviation Museum]] in [[Fort Rucker]], [[Alabama]].<ref>{{cite web|url=http://www.armyaviationmuseum.org/aircraft-collection/rotary-wing/|title=Rotary Wing|website=United States Army Aviation Museum|date=29 October 2016|access-date=26 July 2019|archive-date=1 August 2019|archive-url=https://web.archive.org/web/20190801083128/http://www.armyaviationmuseum.org/aircraft-collection/rotary-wing/|url-status=dead}}</ref>
*61-2408 - CH-47A on display in a park across the street from the [[Don F. Pratt Memorial Museum]] in [[Fort Campbell]], [[Kentucky]].<ref>{{cite web|url=http://www.eurodemobbed.org.uk/locations.php?location=6690|title=Fort Campbell|website=EuroDemobbed|access-date=26 July 2019}}</ref>
*64-13149 - ACH-47A on display at the [[Redstone Arsenal]] in Alabama.<ref>{{cite web|url=http://www.usdemobbed.org.uk/locations.php?location=6169|title=Redstone Arsenal|website=USDemobbed|access-date=27 July 2019}}</ref>
*65-7992 - Model 347 on display at the United States Army Aviation Museum in Fort Rucker, Alabama.<ref>{{cite web|url=https://www.airliners.net/photo/USA-Army/Boeing-Vertol-347/2209323|title=65-7992|website=Airliners|access-date=26 July 2019}}</ref>
*68-15992 - CH-47D on display at the [[U.S. Space & Rocket Center]].<ref>{{Cite web|title= Chinook lands at U.S. Space & Rocket Center|url= https://www.theredstonerocket.com/around_town/article_061e0554-33aa-11e4-9938-001a4bcf887a.html|access-date=2024-11-13|website=Redstone Rocket|date=2014-09-03}}</ref> in Huntsville, Alabama.
*85-24346 - CH-47D on display at the [[Combat Air Museum]] on [[Topeka Regional Airport]] ([[Forbes Field (airport)|Forbes Field]]) in [[Topeka, Kansas]].<ref>{{Cite web|title=Boeing CH-47D Chinook|url=http://www.combatairmuseum.org/aircraft/boeingchinook.html|access-date=2021-06-04|website=www.combatairmuseum.org}}</ref>
*89-00153 - CH-47D on display at [[Castle Air Museum]] in [[Atwater, California|Atwater]], [[California]].<ref>{{cite web|url=https://www.castleairmuseum.org/collection|title=Our Collection|website=Castle Air Museum|access-date=27 July 2019}}</ref>
*90-00222 - CH-47D on display outside at [[Fort Knox]], Kentucky.<ref>{{cite web|url=http://www.usdemobbed.org.uk/locations.php?location=6693|title=Fort Knox - Goodman AAF|website=US Demobbed|access-date=27 July 2019}}</ref>

===Vietnam===
*65-8025 - CH-47A on display at the [[Khe Sanh Combat Base#Tourism|Khe Sanh Combat Museum]].<ref>{{cite web|url=https://www.helis.com/database/cn/46656/|title=65-8025|website=helis.com|access-date=26 July 2019}}</ref>
*66-0086 - CH-47A on display at the [[War Remnants Museum]] in [[Ho Chi Minh City]] (Saigon).<ref>{{cite web|url=http://www.aviationmuseum.eu/Blogvorm/war-remnants-museum/|title=War Remnants Museum|website=aviationmuseum.eu|date=19 November 2016|access-date=26 July 2019}}</ref>
*66-19082 - CH-47A on display at the [[Vietnam Military History Museum]] in [[Hanoi]].<ref>{{cite web|url=https://www.airliners.net/photo/Vietnam-Air-Force/Boeing-Vertol-CH-47A-Chinook-114/4508293|title=66-19082|website=Airliners|access-date=26 July 2019}}</ref>

==Specifications (CH-47F)==
[[File:Boeing CH-47 Chinook 3-view line drawing.svg|right|400px|Orthographically projected diagram of the Boeing Vertol CH-47 Chinook.]]
{{multiple image
 |align = right
 |direction = vertical
 |width = 220px<!-- displayed width of each image in pixels (an integer, omit "px" suffix); overrides "width[n]"s below -->
 |image_caption_align = left<!-- left (default), center, right -->
 |image1 = Lycoming T55-GA-712.jpg
 |alt1 = 
 |image_caption1 = Turboshaft engine on the rear of a {{nowrap|CH-47}}
 |image2 = Chinook Iraq Operation Swarmer CH43 060316-N-5438H-011.jpg
 |alt2 = 
 |image_caption2 = [[M240 machine gun]] emplacement on the loading ramp, with another M240 partly visible on the right shoulder window
}}

{{Aircraft specs
|ref=Boeing CH-47,<ref name=Boeing_CH-47>{{cite web |url=http://www.boeing.com/defense/ch-47-chinook/#/technical-specifications |title=CH-47 Technical Specifications |publisher=Boeing |website= Boeing.com |access-date=19 March 2016 |archive-url=https://web.archive.org/web/20160313152930/http://www.boeing.com/defense/ch-47-chinook/#/technical-specifications |archive-date=13 March 2016 |url-status=live}}</ref> Army Chinook file, CH-47F,<ref>{{cite web |url=https://www.army.mil/article/137584/ |title=CH-47 Chinook helicopter |date=4 November 2014 |work=army.mil |access-date=19 March 2016 |archive-url=https://web.archive.org/web/20160329054721/http://www.army.mil/article/137584 |archive-date=29 March 2016 |url-status=live}}</ref> International Directory, CH-47D<ref name="Frawley Military">Frawley, Gerard: ''The International Directory of Military Aircraft'', p. 49. Aerospace Publications Pty Ltd, 2002. {{ISBN|1-875671-55-2}}.</ref>
|prime units?=kts
<!-- General characteristics -->
|crew=3 (pilot, copilot, flight engineer or loadmaster)
|capacity=<br>
** 33–55 troops ''or''
** 24 stretchers and 3 attendants ''or''
**{{cvt|24000|lb|0}} payload
|length ft=98
|length in=10.7 
|length note=<ref name=Boeing_CH-47/>
* '''Fuselage length:''' {{cvt|51|ft|2|in|1}}<ref name=Boeing_CH-47/>
|width ft=12
|width in=5
|width note=(fuselage)<ref name=Boeing_CH-47/>
|height ft=18
|height in=7.8
|height note=<ref name=Boeing_CH-47/>
|empty weight lb=24578
|empty weight note=
|gross weight lb=54000
|gross weight note=<ref name=Boeing_CH-47/>
|max takeoff weight lb=
|max takeoff weight note=
|fuel capacity={{cvt|1080|USgal|impgal l|0}}<ref name=Boeing_CH-47/>
|more general=
<!-- Powerplant -->
|eng1 number=2
|eng1 name=[[Lycoming T55-GA-714A]]
|eng1 type=[[turboshaft]] engines
|eng1 shp=4733
|eng1 note=
|rot number=2
|rot dia ft=60
|rot dia in=<!-- helicopters -->
|rot area sqft=5600
|rot area note=<br>
*'''Blade section:''' ''root:'' Boeing VR-7; ''tip:'' Boeing VR-8<ref name="Selig">{{cite web |last1=Lednicer |first1=David |title=The Incomplete Guide to Airfoil Usage |url=https://m-selig.ae.illinois.edu/ads/aircraft.html |website=m-selig.ae.illinois.edu |access-date=16 April 2019}}</ref>
<!-- Performance -->
|max speed kts=170
|max speed note=
|cruise speed kts=157
|cruise speed note=<ref name=Boeing_CH-47/>
|never exceed speed kts=
|never exceed speed note=
|range nmi=400
|range note=
|combat range nmi=165
|combat range note= (combat radius)<ref name=Boeing_CH-47/>
|ferry range nmi=1216
|ferry range note=<ref>United States of America. Naval Training Equipment Center. Department of the Navy. ''Recognition Study Cards – US and Foreign Aircraft''. Device 5E14H. LSN 6910-LL-C006462. Orlando, Florida. 1982. 55 Cards. ''Annotation'': 2252 kilometers.</ref>
|endurance=<!-- if range unknown -->
|ceiling ft=20000
|ceiling note=
|climb rate ftmin=1522
|climb rate note=
|time to altitude=
|disk loading lb/sqft=9.5
|disk loading note=
|fuel consumption lb/mi=
|power/mass={{cvt|0.28|hp/lb}}
|more performance=
<!-- Armament -->
|armament= * Up to 3 pintle-mounted medium machine guns (1 on loading ramp and 2 at shoulder windows), generally {{convert|7.62|mm|in|abbr=on}} [[M240 machine gun|M240]]/[[FN MAG]] machine guns, and can be armed with the 7.62&nbsp;mm [[Minigun|M134 Minigun]] rotary machine gun. 
|avionics= * Rockwell Collins Common Avionics Architecture System (CAAS) (MH-47G/CH-47F)
}}

==See also==
{{Portal|Aviation}}
{{aircontent
|see also=<!-- other related articles that have not already linked: -->
* [[17th Aviation Brigade (United States)]]
* [[United States Army Aviation and Missile Command]]
|related=<!-- designs which were developed into or from this aircraft: -->
* [[Boeing Vertol CH-46 Sea Knight]]
* [[Boeing Chinook (UK variants)]]
* [[Boeing Vertol BV-347]]
|similar aircraft=<!-- aircraft that are of similar role, era, and capability as this design: -->
* [[Mil Mi-6]]
* [[Mil Mi-26]]
* [[Sikorsky CH-53 Sea Stallion]]
* [[Sikorsky CH-54 Tarhe]]/[[Sikorsky S-64 Skycrane]]
* [[Yakovlev Yak-24]]
|lists=<!-- relevant lists that this aircraft appears in: -->
* [[List of active United States military aircraft]]
* [[List of aviation shootdowns and accidents during the Iraq War]]
* [[List of military electronics of the United States]]
<!-- See [[WP:Air/PC]] for more explanation of these fields. -->
}}

==References==
{{Reflist}}

==External links==
{{Commons category}}
* {{Official website}}
* [https://web.archive.org/web/20121221060837/http://www.boeing.com/rotorcraft/military/mh47e/index.htm MH-47E/G], [https://web.archive.org/web/20071124220005/http://www.boeing.com/history/boeing/chinook.html CH-47 history], and [https://web.archive.org/web/20071014223254/http://boeing.com/history/boeing/m234.html Model 234 Chinook history pages on Boeing.com]
* [https://web.archive.org/web/20090325024529/http://tri.army.mil/LC/cs/Csa/aahist.htm#CH47 CH-47A/B/C], [https://web.archive.org/web/20061106115603/http://tri.army.mil/LC/CS/csa/aahist2.htm ACH-47A], [https://web.archive.org/web/20070525163303/http://tri.army.mil/LC/CS/csa/aadesc.htm#CH47 CH-47D/F] and [https://web.archive.org/web/20071127040349/http://www-rucker.army.mil/helicopters/chinook.html CH-47 Chinook pages on Army.mil]
* [http://www.airvectors.net/avch47.html CH-47 page on Vectorsite.net]
* [http://www.michaelyon-online.com/the-kopp-etchells-effect.htm The Kopp-Etchells Effect – CH-47 Night Landings in Afghanistan] {{Webarchive|url=https://web.archive.org/web/20090820040127/http://www.michaelyon-online.com/the-kopp-etchells-effect.htm |date=20 August 2009}}.{{dead link|date=September 2022}} Michael Yon online magazine
* {{Internet Archive short film|id=gov.dod.dimoc.26969|name=STAFF FILM REPORT 66-2A (1966)}}

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