| Manufacturer | Arpin |
| Model | A-1 |
| Modification | A-1 Mk.II |
| Country | United Kingdom |
| Years | 1939 |
| Type | Reconnaissance plane |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 9.61 m |
| Length | 7.09 m |
| Height | - |
| Wing area | - |
| Zero fuel weight | - |
| Empty weight | - |
| Maximum takeoff weight | - |
| Normal takeoff weight | 590 kg |
| Flight duration | - |
| Engine | 1 Cirrus Major |
| Power | 1 x 90 HP |
| Thrust | - |
| Maximum speed | 153 km/h |
| Cruising speed | 120 km/h |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | - |
| Hovering ceiling | - |
| Crew | - |
