The Austin Greyhound was a British two-seat biplane fighter aircraft of World War I built by car manufacturer Austin. Owing to the end of the War and an unreliable engine, it was unsuccessful, only three being built.
The Avia BH-6 was a prototype fighter aircraft built in Czechoslovakia in 1923. It was a single-bay biplane of unusual configuration, developed in tandem with the BH-7, which shared its fuselage and tail design.
