Mikołaj Surmanowicz, a retired employee of WSK PZL Kalisz, built a rotorcraft at home between 1971 and 1973. It is a structure of steel and duralumin tubing, with a wooden tail and a 2.5-meter-diameter main rotor, weighing 17 kg. In the autumn of 1973 and summer of 1974, the designer conducted tests at the Ostrów Aeroclub airfield, consisting of short jumps, but a full flight was not possible. Further work on the rotorcraft was interrupted by the designer’s death in 1975.
| Wingspan | – |
| Length | 5.0 m |
| Weight | 17kg |
| Maximum speed | – |
| Ceiling | – |
| Range | – |
| Armament | – |
| Engine | – |
