| Manufacturer | Avia |
| Model | B.634 |
| Modification | B.634 |
| Country | Czechoslovakia |
| Years | 193 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 9.40 m |
| Length | 8.35 m |
| Height | 3.06 m |
| Wing area | - |
| Zero fuel weight | - |
| Empty weight | 1710 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 2340 kg |
| Flight duration | - |
| Engine | 1 Avia-Hispano Suiza 12Ycrs |
| Power | 1 x 850 HP |
| Thrust | - |
| Maximum speed | 415 km/h |
| Cruising speed | 362 km/h |
| Rate of climb | - |
| Practical range | 500 km |
| Service ceiling | 11000 m |
| Hovering ceiling | - |
| Crew | - |
