04/19/2007. Remarks by Walt Patstone: "Dipl.-Ing. Hermann Mylius, head of the Bölkow light aircraft department, designed this light cabin monoplane, with the assistance of Walter Heynen and Johannes Krauss, in spare time. Design started late 1965, while the construction of the prototype started two years later. With the assistance of another six engineers and craftsmen from Bölkow, this took place, also in spare time, in a rented garage in Brunnthal, ca. 10 mls (16 km) south of Munich, Germany. The aircraft was simply designated MHK-101 and registered as D-EMHK (c/n V-0) it was flown for the first time by Hermann Mylius at Laupheim, ca. 80 mls (130 km) west of Munich, on December 22, 1967.

After initial testing Bölkow took over the project and also produced a prototype under the designation BO 209 Monsun. It was registered D-EEBC (c/n V-1), by the time of its first flight on May 28, 1969, the company had merged with Messerschmitt and Blohm to form Messerschmitt-Bölkow-Blohm (MBB) on May 14. MBB built 102 production examples, c/n 101 to 201, and 301.

N209WA was built in 1970 and registered D-EKWA it was one of two demonstrators when the plane was introduced for sale in the USA, eventually about a dozen of them were sold in the USA. This plane has been owned by my brother, Art Patstone, since it was first offered for sale. At one time he flew it in airshows. This photo shows the retractable nose gear which was an option and Art's plane has a 160 hp engine with a constant-speed prop. It is based at the Spruce Creek Fly-in Community in Port Orange, Florida, USA."