| Manufacturer | Letov |
| Model | S-528 |
| Modification | S-528 |
| Country | Czechoslovakia |
| Years | 1934 |
| Type | Other |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 13.71 m |
| Length | 10.00 m |
| Height | - |
| Wing area | 39.40 m2 |
| Zero fuel weight | - |
| Empty weight | 1820 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 2900 kg |
| Flight duration | - |
| Engine | 1 Gnome-Rhone Mistral Major 14Krsd |
| Power | 1 x 800 HP |
| Thrust | - |
| Maximum speed | 330 km/h |
| Cruising speed | 300 km/h |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | 9600 m |
| Hovering ceiling | - |
| Crew | 2 |
