| Manufacturer | Siebel |
| Model | Si.204 |
| Modification | Si.204D-1 |
| Country | Germany |
| Years | 1941 |
| Type | Other |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 21.33 m |
| Length | 13.00 m |
| Height | 4.25 m |
| Wing area | 46.00 m2 |
| Zero fuel weight | - |
| Empty weight | 3950 kg |
| Maximum takeoff weight | 5600 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 2 Argus As 411 |
| Power | 2 x 580 HP |
| Thrust | - |
| Maximum speed | 364 km/h |
| Cruising speed | 306 km/h |
| Rate of climb | - |
| Practical range | 1400 km |
| Service ceiling | 6400 m |
| Hovering ceiling | - |
| Crew | 2 |
