| Manufacturer | Zmaj |
| Model | R-1 |
| Modification | R-1 |
| Country | Yugoslavia |
| Years | 1940 |
| Type | Bomber |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 14.40 m |
| Length | 12.78 m |
| Height | 2.50 m |
| Wing area | 33.80 m2 |
| Zero fuel weight | - |
| Empty weight | 2600 kg |
| Maximum takeoff weight | 5664 kg |
| Normal takeoff weight | 5094 kg |
| Flight duration | - |
| Engine | 2 Hispano Suiza 14AB |
| Power | 2 x 750 HP |
| Thrust | - |
| Maximum speed | 450 km/h |
| Cruising speed | - |
| Rate of climb | - |
| Practical range | 1000 km |
| Service ceiling | 10000 m |
| Hovering ceiling | - |
| Crew | - |
