Conroy Stolifter

The Conroy Stolifter was a conversion of the Cessna 337 Super Skymaster, developed by John M. Conroy of Conroy Aircraft starting in 1968.

Development
The Stolifter was created by removing the Skymaster's rear engine and replacing the forward engine with a 575 shp Garrett AiResearch TPE 331-25A turboprop. The fuselage was extended to allow almost double the normal cargo volume. The aircraft was also fitted with a Robertson Aircraft Corporation STOL-kit.

The aircraft was intended for a range of military and civil roles, including cargo and troop transport, medevac, reconnaissance and parachute drop.

The aircraft is capable of taking off in 250 ft and clearing a 50 ft obstacle in 450 ft. On landing the approach speed is 51 mph, with a touch-down speed of 44 mph, giving a ground roll of as little as 200 ft.

Only one Stolifter was built. The conversion was approved and the single aircraft produced was given a standard Certificate of Airworthiness. The aircraft still exists as of 2023 and is based in Lyman, Washington, USA.