The first Polish post-war motor glider, designed in the late 1940s by engineer Tadeusz Chyliński for the purpose of transitioning glider pilots to powered aircraft.
It is a single-seat mid-wing aircraft of wooden construction, powered by an engine with a pusher propeller designed by engineer Stanisław Gajęcki.
Construction of the prototype was started by the Scout Aviation Workshops and completed at the District Aviation Workshops in Gocławek in mid-1949. The maiden flight took place on 16 July 1949 at the Institute of Aviation.
The Pegaz was noted for its good and safe flying characteristics and could even fly with the engine shut down. It was handed over for trial operation to the Warsaw Aeroclub, where it logged about 100 flying hours. Series production was never started due to a change in the training concept. It was donated by the Warsaw Aeroclub to the Polish Aviation Museum in 1964.
| Wingspan | 11.7 m |
| Length | 6.85 m |
| Height | 1.60 m |
| Wing area | 14.8 m2 |
| Empty weight | 290 kg |
| Takeoff weight | 392 kg |
| Maximum speed | 129 km/h |
| Cruising speed | 110 km/h |
| Stall speed | 59 km/h |
| Maximum rate of climb | 1.95 m/s |
| Glide ratio | 15.5 |
| Minimum sink rate | 1.25 m/s |
| Ceiling | 3000 m |
| Range | 275 km |
| Engine | 2-cylinder two-stroke piston engine, air-cooled XL-GAD in flat configuration, 31 hp |
