| Manufacturer | de Havilland |
| Model | D.H.29 Doncaster |
| Modification | D.H.29 |
| Country | United Kingdom |
| Years | 1921 |
| Type | Experimental aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 16.46 m |
| Length | 13.11 m |
| Height | 5.03 m |
| Wing area | 40.88 m2 |
| Zero fuel weight | - |
| Empty weight | 1982 kg |
| Maximum takeoff weight | 34092 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 1 Napier Lion IB |
| Power | 1 x 450 HP |
| Thrust | - |
| Maximum speed | 187 km/h |
| Cruising speed | - |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | - |
| Hovering ceiling | - |
| Crew | 2 |
