The first KIII was built during the German occupation of Denmark and first flew on 11 September 1944.

[2][3] The KIII had a high wing braced by V-struts to the lower fuselage.

Its fuselage had a steel tube structure and, like the rest of the aircraft, had fabric covering.

[2] 64 were built post-war[2] with 100 hp (75 kW) Blackburn Cirrus Minor II engines.

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