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{{Short description|Lithuanian reconnaissance aircraft}}
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{{Infobox aircraft
 |name=Anbo IV
 |image=ANBO_41.jpg
 |caption=ANBO-41 variant
 |type=Reconnaissance aircraft
 |manufacturer=[[Karo Aviacijos Tiekimo Skyrius]]
 |designer=[[Antanas Gustaitis]]
 |first_flight= 14 July [[1932 in aviation|1932]]
 |introduction=[[1934 in aviation|1934]]
 |retired=[[1940 in aviation|1940]] (Lithuania)
 |status=
 |primary_user=
 |more_users=
 |produced=
 |number_built= 14 ANBO IV, 20 ANBO 41
 |developed_from = [[ANBO III]]
 |variants=
}}
{{external media
| float  = right
|width=200px
|video1=[https://www.youtube.com/watch?v=Jk5gWXN1MbM Lithuanian Air Force in 1939]}}

The '''ANBO IV''' was a [[reconnaissance aircraft]] used by the [[Lithuanian Air Force]] in [[World War II]], designed by [[Lithuania]]n aircraft designer [[Antanas Gustaitis]]. The Lithuanian ANBO 41 was far ahead of the most modern foreign reconnaissance aircraft of that time in structural features, and most importantly in speed and in climb rate.<ref>{{cite web|title=Paskutinįjį Lietuvos karo aviacijos viršininką prisimenant Brigados generolas inžinierius Antanas Gustaitis (1898-1941) |date=9 April 2003 |number=28 |trans-title=Remembering the Last Chief of Lithuanian Military Aviation Brigadier General Antanas Gustaitis (1898-1941) |author=A. Navaitis  |url=http://www.xxiamzius.lt/archyvas/xxiamzius/20030409/istving_01.html |website=www.xxiamzius.lt|access-date=27 November 2017 |language=lt-LT}}</ref> All ANBO 41 aircraft were likely destroyed during World War II.<ref>{{cite web |author=Valius Venckūnas |title=Kur dingo lietuvos tarpukario sparnai? (II) |date=29 July 2011 |trans-title= Where did lithuania's interwar wings go? (II) |url=http://alkas.lt/2011/07/29/kur-dingo-lietuvos-tarpukario-sparnai-ii/ |website=alkas.lt |access-date=23 August 2018 |language=lt-LT}}</ref>

==Development==
The ANBO IV was developed from the [[ANBO III]] trainer. The design was supervised by Colonel [[Antanas Gustaitis]]. The first flight took place on 14 July 1932, the prototype being powered by a Wasp engine. After successful trials, series production began. Thirteen series-built aircraft were powered by British [[Bristol Pegasus]] engines and were manufactured by [[Karo Aviacijos Tiekimo Skyrius|Lithuanian Aircraft State Factory]]. It could be armed with two pairs of light machine guns and could carry 200&nbsp;kg of bombs.<ref>{{cite web|title=ANBO-41 - Lietuvos Aviacijos Istorija 1919 - 1940 m.|url=http://www.plienosparnai.lt/page.php?31|website=www.plienosparnai.lt|access-date=28 November 2017}}</ref>

==Operational history==
ANBO IVs were introduced into [[Lithuanian Air Force]] in 1934 and shortly before that a few aircraft made demonstration flights in a few European countries: [[France]], [[United Kingdom]], [[Soviet Union]] and most [[Scandinavian countries]]. Between 25 June and 29 July 1934, three aircraft commanded by colonel Gustaitis flew {{convert|10,000|km|mi|abbr=on}} route.

ANBO IV and ANBO 41 aircraft equipped one and two reconnaissance squadrons respectively in [[Lithuanian Air Force]], at the time of the [[Occupation of the Baltic states|Soviet occupation of the Baltic states]] in the summer of 1940.

A photo exists showing that at least one Anbo IV or Anbo 41 survived this period and was operated by the [[Luftwaffe]] during the [[Germany|German]] occupation.

==Variants==
;ANBO IV
:Designation of prototype and 13 serial-built aircraft used for night and day reconnaissance.
;ANBO 41
:Second production version with more powerful engine and three-blade wooden propeller. It was then the only aircraft in Europe to employ a wooden three-blade propeller.{{citation needed|date=May 2017}}

<gallery class="center" widths="150px">
Anbo41.jpg|ANBO-41 No.671 of the first serial production in Kaunas (1937)
Anbo4.jpg|ANBO-IVM of the second series (1935)
Anbo4-2.jpg|ANVO IV in an aerodrome
Romuladas Marcinkus reporting.jpg|Three ANBO-41s
Anbo_41-I.jpg|ANBO 41 replica as found at [[Kaunas Airport|Kaunas Aerodrome]]
</gallery>

==Operators==
;{{flag|Lithuania|1918}}
*[[Lithuanian Air Force]]
;{{USSR}}
*[[Soviet Air Force]] incorporated Lithuanian units with equipment and personnel.
;{{flagcountry|Nazi Germany}}
*[[Luftwaffe]] used at least one Anbo 41 captured from the [[Soviet Air Force]] for training and liaison purposes in 1941–1942.

==Specifications (ANBO 41)==
{{Aircraft specs
|ref=Monografie: ANBO-IV, ANBO-41{{sfn|Týc ''Letectví + Kosmonautika'' 1994 No 4|pp=270–271}}
|prime units? = met
|crew=two, pilot and observer
|length m=8.80
|span m=13.20
|height m=3.30
|wing area sqm=29.0
|empty weight kg=1600
|gross weight kg=2,350

|eng1 number=1
|eng1 name=[[Bristol Pegasus|Bristol Pegasus XI]]
|eng1 kw=<!-- prop engines -->676
|max speed kmh=360
|cruise speed kmh=300
|stall speed kmh=100
|range km=1000
|ceiling m=9000
|time to altitude= 9 minutes to {{convert|5000|m|ft|abbr=on}}

|armament = *2 × fixed, forward-firing 7.9 mm machine guns
*2 × flexible machine guns for observer
*Up to 200 kg (440 lb) of bombs
}}

==See also==
* [[Antanas Gustaitis]]
* [[Lithuanian Air Force]]

==References==
{{reflist}}
* {{cite book |last= Taylor |first= Michael J. H. |title=Jane's Encyclopedia of Aviation |year=1989 |publisher=Studio Editions |location=London }}
* {{cite magazine |last=Týc |first=Pavel |title=Monografie: ANBO-IV, ANBO-41: Část I |magazine=Letectví + Kosmonautika |year=1994 |volume=LXX |issue=1 |pages=31–34 |issn=0024-1156 |ref={{harvid|Týc ''Letectví + Kosmonautika'' 1994 No 1}} }}
* {{cite magazine |last=Týc |first=Pavel |title=Monografie: ANBO-IV, ANBO-41: Část II |magazine=Letectví + Kosmonautika |year=1994 |volume=LXX |issue=2 |pages=107–110 |issn=0024-1156 |ref={{harvid|Týc ''Letectví + Kosmonautika'' 1994 No 2}} }}
* {{cite magazine |last=Týc |first=Pavel |title=Monografie: ANBO-IV, ANBO-41: Část III |magazine=Letectví + Kosmonautika |year=1994 |volume=LXX |issue=3 |pages=185–188 |issn=0024-1156 |ref={{harvid|Týc ''Letectví + Kosmonautika'' 1994 No 3}} }}
* {{cite magazine |last=Týc |first=Pavel |title=Monografie: ANBO-IV, ANBO-41: Část IV |magazine=Letectví + Kosmonautika |year=1994 |volume=LXX |issue=4 |pages=269–272 |issn=0024-1156 |ref={{harvid|Týc ''Letectví + Kosmonautika'' 1994 No 4}} }}
* [https://web.archive.org/web/20070927074438/http://www.lam.lt/old/istorija/karo_aviacija/gustaicio/anbo4/nfra4en.htm Lithuanian Aviation Museum]

== External links ==
{{commons category}}
*[https://web.archive.org/web/20031213100403/http://www.lizdas.lt/aviacija/lietuva/anbo_41.htm Lithuanian description] {{in lang|lt}}

{{ANBO aircraft}}

[[Category:1930s Lithuanian military reconnaissance aircraft]]
[[Category:ANBO aircraft|4]]
[[Category:Parasol-wing aircraft]]
[[Category:Single-engined tractor aircraft]]
[[Category:Aircraft first flown in 1932]]