Avia BH-33

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BH-33
General information
Type	Fighter
Manufacturer	Avia, PWS (under licence), Ikarus (under licence)
Designer	Miroslav Hajn and Pavel Beneš
Primary users	Czechoslovak Air Force Polish Air Force Yugoslav Royal Air Force
History
Manufactured	Ca. 110, plus 50 licence-built in Poland and 22 in Yugoslavia
First flight	21 October 1927
Developed from	Avia BH-21

The Avia BH-33 was a biplane fighter aircraft built in Czechoslovakia in 1927. It was based on the BH-21J which demonstrated promising results by combining the original BH-21 airframe with a licence-built Bristol Jupiter radial engine. Other than the peculiar Avia hallmark of having an upper wing with a shorter span than the lower, it was utterly conventional, even featuring a tail fin for the first time in a Pavel Beneš and Miroslav Hajn design (previous aircraft had a rudder but no fin).