TheArado Ar 65 was the single-seatbiplanefighter successor to theAr 64. Both looked very similar. The only major difference was the use of a 12-cylinderinline engine versus the Ar 64'sradial. Thewingspan was also increased.
The Ar 65 appeared in 1931 and six models were built. The first three 65a-c wereprototypes, while the 65d-f were production models. The Ar 65d was delivered in 1933 and served alongside the Ar 64 in the two fighter groups -Fliegergruppe Döberitz andFliegergruppe Damm. In 1935, the Ar 65 was reduced to atraining aircraft. Production of the fighter was discontinued in 1936. However, the next year, 12 of them were presented to Germany's ally - theRoyal Bulgarian Air Force. The final production total was 85 aircraft.
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Green, William, and Gordon Swanborough,The Complete Book of Fighters (Salamander Books, 2002)
Ledet, Michel (April 1997). "Le Arado Ar 65, première chasseur d'Hitler (deuxième partie et fin)" [Hitler's First Fighter, the Arado Ar 65].Avions: Toute l'aéronautique et son histoire (in French) (49):17–21.ISSN1243-8650.