The PZL M-20 Mewa is a six-seat executive aircraft, manufactured by WSK PZL Mielec under license from the American Piper PA-34 Seneca II. The first example, built from components supplied from the USA, made its maiden flight in July 1979. Unlike the American original, the Mewa aircraft were powered by PZL-Franklin 6A-350C engines produced in Poland. Problems with the Franklin engines led to the introduction of a production version in 1985 corresponding to the newer Piper PA-34 Seneca III variant with Teledyne Continental TSIO/LTSIO-360-KB engines.
In Poland, Mewa aircraft are used as executive planes and for training multi-engine pilots in instrument flight rules (IFR) at the Aviation Training Centre of the Rzeszow University of Technology.
Three examples were operated by the Polish Air Ambulance Service. One aircraft served in the Maritime Border Guard Division for patrol flights over the sea.
The exhibited example with serial number 1AHP01-01 is the first Mewa built in Poland from parts supplied by the licensor. First flown by Tadeusz Pakula on 25 July 1979, it initially bore the registration SP-PKA. Later the aircraft was rebuilt to the M-20-03 version and received the registration SP-DMA. In 1988, the aircraft was presented at the Farnborough Air Show. The aircraft was used by the Aerogryf Aviation company, among other things for conducting training within a certified Aviation Training and Retraining Centre. It was handed over to the Museum after flying to the Rakowice-Czyzyny Airstrip in September 2011.
| Wingspan | 11.86 m |
| Length | 8.72 m |
| Takeoff weight | 2,070 kg |
| Maximum speed | 360 km/h |
| Ceiling | 7,620 m |
| Range | 1,260 km |
| Armament | – |
| Engine | two 6-cylinder inline flat (boxer) PZL-Franklin 6A-350C air-cooled engines, 162 kW (220 hp) each |
