| Manufacturer | Sleiters |
| Model | IS-1 |
| Modification | IS-1 |
| Country | Latvia |
| Years | 1939 |
| Type | Light aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | - |
| Length | 5.56 m |
| Height | - |
| Wing area | 7.70 m2 |
| Zero fuel weight | - |
| Empty weight | 315 kg |
| Maximum takeoff weight | 430 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 1 Hirt HM60 |
| Power | 1 x 72 HP |
| Thrust | - |
| Maximum speed | 250 km/h |
| Cruising speed | - |
| Rate of climb | 250 m/min |
| Practical range | - |
| Service ceiling | - |
| Hovering ceiling | - |
| Crew | 1 |
