| Manufacturer | Liore et Olivier |
| Model | LeO-21 |
| Modification | LeO-21 |
| Country | France |
| Years | 1926 |
| Type | Transport aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 22.76 m |
| Length | 15.40 m |
| Height | 4.30 m |
| Wing area | 106.50 m2 |
| Zero fuel weight | - |
| Empty weight | 2742 kg |
| Maximum takeoff weight | 5498 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 2 Gnome-Rhone 9Ab |
| Power | 2 x 420 HP |
| Thrust | - |
| Maximum speed | 184 km/h |
| Cruising speed | 155 km/h |
| Rate of climb | - |
| Practical range | 750 km |
| Service ceiling | 4200 m |
| Hovering ceiling | - |
| Crew | 2 |
