The FK-Leichtflugzeuge FK-9 is a product of B&F Technik Vertriebs GmbH, Speyer, Germany. Production of the airframes
takes place in Krosno, Poland; assembly of the airframes and the final production of the aircraft in the factory in Speyer,
Germany. Otto Funk (=FK) designed in 1959 on behalf of Heinkel in Speyer the complete metal glider Greif
1a (FK1). This was the start of a range of light aircraft. Otto
Funk started in 1984 with the development of a light aircraft: the FK6.
With this design the UL-market was entered. The break-through on this
market was the introduction of the FK9 in 1989. The FK9 was a combined
design of Otto and his son Peter. The 2-seat FK9 utilized the wing concept of the FK6.
To build the FK9 Peter Funk founded in 1990 together with his partner Dirk Breitkreuz
the company B&F Technik. Production of the FK9 MK1 begun in the following year. About
40 MLA's of FK9 Mk 1 version were built until the airplane was re-designed and replaced
in production in 1995 by the FK9 MK II version. The FK9 MK II version was further developed
to achieve higher cruising speeds and a greater flight comfort. This FK9 MK
III version, a plane made entirely of composites entered production at the end of 1996. Although this machine
still featured many of the MK II characteristics, the differences were
nevertheless so significant that parallel production of both types
proved necessary. In 2000 the FK9 MK III Utility a further development of the MK
III, designed specifically for professional duty, entered production. This version
incorporates the fuselage and horizontal stabilizer of the MK III, but has
newly-designed wings and a higher payload factor. In 2004, the FK9 MK IV
was introduced as a further development of the MK III and divers from
the MK III by the cabin length; control stick; horizontal stabilizer and trim system.