| Manufacturer | Port Victoria |
| Model | Grain Griffin |
| Modification | Grain Griffin |
| Country | United Kingdom |
| Years | 1917 |
| Type | Other |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 12.96 m |
| Length | 8.38 m |
| Height | 3.05 m |
| Wing area | 47.00 m2 |
| Zero fuel weight | - |
| Empty weight | 761 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 1299 kg |
| Flight duration | 3 h |
| Engine | 1 Bentley BR2 |
| Power | 1 x 230 HP |
| Thrust | - |
| Maximum speed | 181 km/h |
| Cruising speed | 158 km/h |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | 5030 m |
| Hovering ceiling | - |
| Crew | 2 |
