| Manufacturer | Junkers |
| Model | G.31 |
| Modification | G.31fo |
| Country | Germany |
| Years | 1926 |
| Type | Transport aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 30.30 m |
| Length | 17.28 m |
| Height | - |
| Wing area | 102.00 m2 |
| Zero fuel weight | - |
| Empty weight | 5250 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 8500 kg |
| Flight duration | - |
| Engine | 3 BMW Hornet-A |
| Power | 3 x 525 HP |
| Thrust | - |
| Maximum speed | 211 km/h |
| Cruising speed | 185 km/h |
| Rate of climb | - |
| Practical range | 1050 km |
| Service ceiling | 4300 m |
| Hovering ceiling | - |
| Crew | 2 |
