| Manufacturer | Dewoitine |
| Model | D.21 |
| Modification | D.21 |
| Country | France |
| Years | 1925 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 12.80 m |
| Length | 7.64 m |
| Height | 3.00 m |
| Wing area | 24.80 m2 |
| Zero fuel weight | - |
| Empty weight | 1090 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 1580 kg |
| Flight duration | - |
| Engine | 1 Hispano-Suiza 12Gb |
| Power | 1 x 500 HP |
| Thrust | - |
| Maximum speed | 270 km/h |
| Cruising speed | 236 km/h |
| Rate of climb | - |
| Practical range | 400 km |
| Service ceiling | 8200 m |
| Hovering ceiling | - |
| Crew | - |
