| Manufacturer | Hurel-Dubois |
| Model | HD.31 |
| Modification | НD.31 |
| Country | France |
| Years | 1953 |
| Type | Transport aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 45.30 m |
| Length | 23.20 m |
| Height | 6.83 m |
| Wing area | 100.00 m2 |
| Zero fuel weight | - |
| Empty weight | 8950 kg |
| Maximum takeoff weight | 13500 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 2 Wright R-1300-C7-BA1 Cyclone |
| Power | 2 x 800 HP |
| Thrust | - |
| Maximum speed | 260 km/h |
| Cruising speed | 230 km/h |
| Rate of climb | - |
| Practical range | 2000 km |
| Service ceiling | 4800 m |
| Hovering ceiling | - |
| Crew | 4 |
