The Pottier P.50 Bouvreuil ("Bullfinch") was a single-seat, single-engine racing aircraft developed in France in the late 1970s and marketed for homebuilding.[1] It was a low-wing cantilever monoplane of conventional design with an enclosed cockpit.[2] The undercarriage was of tailwheel configuration, and the P.50 was designed from the outset to offer the builder the alternative of fixed or retractable main units.[2] Construction throughout was of wood, except for the engine cowling and main wheel spats, which were fibreglass mouldings.[2]