Pilatus P-4

The Pilatus P-4 was a Swiss five-seat cabin monoplane designed and built by Pilatus as a versatile working aircraft rather than a passenger machine. It was a high-wing monoplane with a fixed tailwheel undercarriage, a fabric-covered steel-tube fuselage and a wooden wing braced by steel struts, powered by a Lycoming GO-435 engine. The cabin took a pilot and four passengers, with room for two stretchers, photographic equipment or crop spraying gear, and ski or float undercarriages were optional. The prototype first flew on 22 March 1948 and was shown at the 1949 Paris Air Show, but the type never entered production because Pilatus lacked capacity. The sole aircraft crashed in the Susten Pass region on 13 October 1957.