| Manufacturer | Folland |
| Model | Fo.139 Midge |
| Modification | Fo.139 Midge |
| Country | United Kingdom |
| Years | 1954 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 6.30 m |
| Length | 8.76 m |
| Height | 2.82 m |
| Wing area | 11.61 m2 |
| Zero fuel weight | - |
| Empty weight | - |
| Maximum takeoff weight | - |
| Normal takeoff weight | 2041 kg |
| Flight duration | - |
| Engine | 1 ТРД Armstrong Siddeley Viper 101 |
| Power | - |
| Thrust | 1 x 7.295 kN |
| Maximum speed | 966 km/h |
| Cruising speed | - |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | 12191 m |
| Hovering ceiling | - |
| Crew | 1 |
