| Manufacturer | Avia |
| Model | B-158 |
| Modification | B-158 |
| Country | Czechoslovakia |
| Years | 1937 |
| Type | Bomber |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 16.00 m |
| Length | 12.00 m |
| Height | 5.20 m |
| Wing area | 42.70 m2 |
| Zero fuel weight | - |
| Empty weight | 4300 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 4093 kg |
| Flight duration | - |
| Engine | 2 Avia (Hispano-Suiza) HS-12Ydrs |
| Power | 2 x 860 HP |
| Thrust | - |
| Maximum speed | 435 km/h |
| Cruising speed | 405 km/h |
| Rate of climb | - |
| Practical range | 1850 km |
| Service ceiling | 8500 m |
| Hovering ceiling | - |
| Crew | - |
