fk51_k32_34lijn_ols40.jpeg Koolhoven FK.51 K-17ThumbnailsP-51 N3-615 of 121 SquadronKoolhoven FK.51 K-17ThumbnailsP-51 N3-615 of 121 Squadron
1940

The Koolhoven F.K.51 was a 1930s Dutch two-seat basic training biplane built by the Koolhoven Company
(https://en.wikipedia.org/wiki/Koolhoven_F.K.51)