St Croix aircraft

The St Croix Sopwith Triplane is an American homebuilt aircraft that was designed and produced by St Croix Aircraft of Corning, Iowa. When it was available the aircraft was supplied as a kit or in the form of plans for amateur construction. The aircraft is a full-size replica of the 1916 Sopwith Triplane fighter aircraft.

The St Croix Pietenopol Aircamper is an American homebuilt aircraft, an adaptation of the classic 1920s Pietenpol Air Camper, re-designed by St Croix Aircraft of Corning, Iowa. When it was available the aircraft was supplied as a partial kit and in the form of plans for amateur construction.

The St Croix Pietenpol Aerial is an American homebuilt aircraft that was designed by Chad and Charles Willie and produced by St Croix Aircraft of Corning, Iowa, first flown in 1977. When it was available the aircraft was supplied in the form of plans for amateur construction, with partial kits available.

The St Croix Excelsior (English: ever higher) is an American ultralight aircraft that was designed by Chad Wille and Charles Wille, produced by St Croix Aircraft of Corning, Iowa and first flown in 1980. The aircraft was supplied in the form of plans for amateur construction with some hard-to-make parts available as well as partial kits.