| Manufacturer | de Havilland |
| Model | DH.66 Hercules |
| Modification | DH.66 |
| Country | United Kingdom |
| Years | 1926 |
| Type | Transport aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 24.23 m |
| Length | 16.92 m |
| Height | 5.56 m |
| Wing area | 143.72 m2 |
| Zero fuel weight | - |
| Empty weight | 4110 kg |
| Maximum takeoff weight | 7076 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 3 Bristol Jupiter VI |
| Power | 3 x 420 HP |
| Thrust | - |
| Maximum speed | 206 km/h |
| Cruising speed | 177 km/h |
| Rate of climb | - |
| Practical range | 845 km |
| Service ceiling | 3960 m |
| Hovering ceiling | - |
| Crew | 3 |
