The A-42 bomber monoplane was built by Aero in 1930, with wooden wing, and steel-tube-riveted fuselage covered by fabric. The engine cowling was sheet metal shaped over an 880 hp Isotta Fraschini Asso engine with a three-blade propeller. Fixed undercarriage.
The Aero A-42 bomber monoplane flown by Svozil made three International speed achievements in 1930 - 252.380 km.p.h.at a 1000 km distance loaded by 500 and 1000 kg respectively and 253.428 km.p.h. at the distance of 1000 km with no load.
Climb was inadequate and hold-off too long. Pilot`s complaints about poor view out of the cocpit covered by a canopy resulted in refinements that proved to be catastrophic in the second prototype.
The Fokker F-IX type was preferred by the Defense Ministry and A-42 production aircraft was not realized.
Engine: Isotta Fraschini Asso, 880 hp
Wingspan: 20.80 m
Length: 13.80 m
Empty weight: 2 940 kg
Top speed: 270 kph
Service ceiling: 7000 m
Range: 1200 km