Avia BH-6
The prototype of the single-seat Czechoslovakian combat biplane Avia BH -6 was tested in 1923. It was developed simultaneously with the monoplane BH -7 after a competitive tender of the Czechoslovak Ministry of Defence and had a wooden structure with a slender trunk, in which the lower wing were greater than the upper. The wings were braced on both sides with an I - support. The engine was a 300 hp ( 224 kW) leis border V8 engine Hispano- Suiza 8Fb ( Škoda built ). The BH -6 prototype crashed after only a few flights. The top speed was 220 km / h