Bölkow Bo 207
The Bölkow Bo 207 was a four-seat light aircraft built in West Germany in the early 1960s, a development of the Klemm Kl 107 built during World War II. Design and development. The Bo 207 is a wood construction, single-engined, cantilever low-wing cabin monoplane with a conventional landing gear with a tail wheel. The aircraft is powered by a Lycoming O-360 four-cylinder, direct-drive, horizontally opposed, air-cooled, piston engine. Bölkow had built the two and three-seat Kl 107 and developed a four-seat variant, at first designated the Kl 107D. The  low-wing cabin monoplane had a re-designed cockpit and canopy and a larger tail. The two prototype Kl 107Ds were built at Nabern and the first flew on 10 October 1960. With the change of name of the company to Bolkow and the move to new factory at Laupheim production of the new variant was started at the new factory. In May 1961 the design was re-designated the Bolkow F.207 but by July 1961 it was re-designated again as the Bolkow BO 207. The first of 90 production aircraft built at Laupheim was flown on 24 May  1961 and production continued until 1963. A number of aircraft remained unsold and the last aircraft although built in 1963 did not fly until 1 April 1966. One aircraft was built with tricycle landing gear, and designated BO 217B or sometimes known as the BO 214 but it was fitted with a conventional landing gear before it was sold.