| Manufacturer | Junkers |
| Model | Junkers J11 (CLS.I) |
| Modification | CLS.I |
| Country | Germany |
| Years | 1918 |
| Type | Bomber |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 12.75 m |
| Length | 8.80 m |
| Height | - |
| Wing area | 26.60 m2 |
| Zero fuel weight | - |
| Empty weight | 915 kg |
| Maximum takeoff weight | - |
| Normal takeoff weight | 1420 kg |
| Flight duration | - |
| Engine | 1 BMW D.III (Benz D.IIIa) |
| Power | 1 x 185 HP |
| Thrust | - |
| Maximum speed | 180 km/h |
| Cruising speed | 160 km/h |
| Rate of climb | - |
| Practical range | 500 km |
| Service ceiling | 5200 m |
| Hovering ceiling | - |
| Crew | - |
