| Manufacturer | Letov |
| Model | S-25 |
| Modification | S-25 |
| Country | Czechoslovakia |
| Years | 1930 |
| Type | Other |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 11.35 m |
| Length | 9.45 m |
| Height | - |
| Wing area | 19.80 m2 |
| Zero fuel weight | - |
| Empty weight | 960 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 1180 kg |
| Flight duration | - |
| Engine | 1 Skoda HS 8Fb |
| Power | 1 x 300 HP |
| Thrust | - |
| Maximum speed | 197 km/h |
| Cruising speed | 165 km/h |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | 4700 m |
| Hovering ceiling | - |
| Crew | 2 |
