Koolhoven F.K.54

It flew shortly before the start of World War II and its development was abandoned after its first flight as attention turned to military aircraft.

[1] The F.K.54's fuselage was flat-sided, with a 140 hp (104 kW) de Havilland Gipsy Major four cylinder inverted inline air-cooled engine in the nose driving a two blade propeller A three-seat, glazed cabin was located under the wing, entered by a port side door.

The novel undercarriage was hydraulically operated, the wheels lifting rearwards into the fuselage under the passenger seats.

Though the registration reservation PH-APR was made in January 1937[2] the F.K.54 did not fly until around the autumn of 1938, delayed by Koolhoven's increasing concentration on warplanes.

The F.K.54 was neglected and ultimately destroyed because of the war; it was lost to bombing on 10 May 1940 during the German invasion of the Netherlands.

Koolhoven FK.54 3-view drawing from L'Aerophile February 1938