Type 3-seat light bomber
Engine 2  Avia (Hispano-Suiza) 12Ydrs
Dimensions Length 12,0 m , height 5,20 m ,  span 16,0 m  , wing area  43,0 m2 ,
Weights Empty 4300 kg, loaded 6600 kg , max. take off weight  7260 kg
Performance Max.. speed  435 km/h, cruising speed 365 km/h , range 1100 km, endurance  , service ceiling 8500 m  , climb 7,0 m/sec.
Armament 3 7.92 mm vz.30 (Česká zbrojovka Strakonice) machine guns in nose, dorsal and ventral positions
Bombs: 1,000 kg (2,200 lb
Type Werk.Nr Registration History
In the summer of 1940 It got  German markings and was ferried to the test center at Rechlin, where it conducted a series of test flights. As the bomber showed mediocre flight data testing it soon ended in 1940 and scrapped
The Avia B.158 was a prototype Czechoslovak twin-engined light bomber aircraft of the 1930s. Only a single example was built and it was abandoned following the German occupation of Czechoslovakia in March 1939.
In 1935, the Czech aircraft company Avia produced the B-58 design for a small twin-engined bomber with a fixed undercarriage and powered by two 313 kW (420 hp) Avia Rk.17 radial engines. This design was abandoned in 1936 and replaced by a more powerful and advanced derivative, the Avia B.158, which was designed to meet a requirement from the Czechoslovak Ministry of National Defense (MNO) for a high performance medium bomber, capable of operation during both day and night, competing against Aero Vodochody's A.300.
In 1937, Avia started to build a single prototype of the B-158, a three-seat low-winged monoplane with inverted gull-wings, a retractable tailwheel undercarriage and 634 kW (850 hp) Avia (Hispano-Suiza) 12Ydrs engines, making its maiden flight in mid-1938 It was fitted with a twin tail to give a better field of fire for the dorsal gun position.

While the competing Aero A.300 gave superior performance, neither had entered into production by the time Germany completed its conquest of Czechoslovakia. After testing by the Luftwaffe at their test centre at Rechlin, the prototype B-158 was scrapped in 1940