The Bü 133 was a development of the
Bücker Bü 131 Jungmann two-seat basic trainer. First flown in 1935 (by
Luise Hoffmann, the first female test pilot in Germany), it was slightly smaller than the Bü 131. The prototype, D-EVEO, was powered by a
Hirth HM506 inverted, air-cooled
inline-6 engine. In the 1960s, the American pilot Jack Canary obtained construction plans for the Bü-133 from Spain and a production licence from Carl Bücker, with the intention of restarting production of the Jungmeister in Germany to meet an expected high demand from the United States. The first new-build aircraft was completed by the Wolf Hirth factory at Nabern being completed in 1968. Jack Canary was killed later that year during the production of the film
Tora! Tora! Tora!, however, and his death caused the project to lose momentum, with poor sales (partly due to the high cost of the new-build aircraft together with the availability of ex-Swiss Jungmeisters on the civil market) caused Hirth to stop production in 1971 after four aircraft had been built. Several aircraft were later completed from components built during this project, with two aircraft built in Austria in the 1970s, one built in France in 1991 and another completed by Hirth in 1991. ==Operational history==