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The Klemm Kl 107 was a two-seat light aircraft developed in Germany in 1940. It was a conventional low-wing cantilever monoplane of wooden construction with fixed tailwheel undercarriage. Wartime production totalled only five prototypes and some 20 production machines before the Klemm factory was destroyed by Allied bombing. Following World War II and the lifting of aviation restrictions on Germany, production recommenced in
1955 Events January * January 3 – José Ramón Guizado becomes president of Panama. * January 17 – , the first nuclear-powered submarine, puts to sea for the first time, from Groton, Connecticut. * January 18– 20 – Battle of Yijian ...
with a modernised version, the Kl 107B, of which Klemm built a small series before selling all rights to the design to
Bölkow Bölkow was a West German aircraft manufacturer based in Stuttgart, Germany, and later Ottobrunn. History The company was founded in 1948 by Ludwig Bölkow, who since 1955 with Emil Weiland had developed helicopters for Bölkow Entwicklungen KG. ...
. This firm further revised the design and built it as the Kl 107C before using it as the basis for their own Bo 207.


Development

The Kl 107 was a development from earlier Klemm designs and was a single-engined two-seat low-wing monoplane with a conventional landing gear. The first prototype registered ''D-EXKL'' first flew in early 1940 powered by a 105 hp Hirth HM500A-1 engine. Seven prototypes were built at Boblingen in 1940 and 1941 as a private venture but only six had flown by the time the project was stopped by the war. After the war Hans Klemm Flugzeugbau joined forces with a small engineering firm Bolkow Entwicklungen as a joint-venture to further develop the Kl 107 design. The new prototype, registered D-ECAD, was built at Nabern and first flew at Stuggart Airport on 4 September 1956. Originally flown as a Kl 107 with a Continental C90-12F engine, it was modified as a Kl 107A and then it was re-engined in 1957 with a Lycoming O-320-A2A engine and redesignated Kl 107B. It was exhibited at the 1957
Paris Air Show The Paris Air Show (french: Salon international de l'aéronautique et de l'espace de Paris-Le Bourget, Salon du Bourget) is a trade fair and air show held in odd years at Paris–Le Bourget Airport in north Paris, France. Organized by the French ...
. A production run of 25 aircraft were then built in 1958 and 1959. In 1959 a Kl 107C variant with a modified cabin was flown and production continued of this variant until the last and 54th post-war aircraft was flown on 27 September 1961. A four-seat variant was developed as the BO 207.


Variants

;Kl 107 :Seven prototypes with Hirth HM500 engines, only six flown. ;Kl 107 V-8 :New post-war prototype with a Continental C90-12F engine first flown in 1956. ;Kl 107A :The V-8 prototype modified, it was later re-engined as the Kl 107B. ;Kl 107B :Production variant with a
Lycoming O-320-A1A The Lycoming O-320 is a large family of naturally aspirated, air-cooled, four-cylinder, direct-drive engines produced by Lycoming Engines. They are commonly used on light aircraft such as the Cessna 172 and Piper Cherokee. Different variants ...
engine, one prototype converted from Kl 107A and 25 production aircraft. One modified as the prototype Kl 107C and the last two completed as Kl 107Cs. ;Kl 107C :Variant with modified cabin with three seats, prototype first flown 3 June 1959. One prototype and 29 production aircraft (including two originally to be Kl 107Bs). ;Kl 107D :Original designation of a four-seat variant that became the
Bolkow Bo 207 Bolkow may refer to: *Bölkow, a German aircraft manufacturer based in Stuttgart *Bolków Bolków (german: Bolkenhain) is a town in Jawor County, Lower Silesian Voivodeship, in south-western Poland. It is the seat of the administrative distric ...
.


Specifications (Kl 107B)


See also


Notes


References

* * * {{RLM aircraft designations 1940s German civil utility aircraft Klemm aircraft Single-engined tractor aircraft Low-wing aircraft Aircraft first flown in 1940