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The Cassutt Special is a single-seat sport and racing aircraft designed in the United States in 1951 for Formula One air races. Plans are still available for homebuilding. Designed by ex-TWA captain Tom Cassutt, it is a mid-wing cantilever monoplane with fixed tailwheel undercarriage. The fuselage and tail are of fabric-covered steel tube construction, and the wings are built from plywood over wooden ribs. An updated taper-wing design was first flown in 1971 on Jim Wilson's "Plum Crazy".