The KZ I was a single-seat sports plane with folding wings and an all wood construction. The original was the only example of the type built but was lost during WWII. This replica was completed in 1988.

The original KZ-I made its first flight 24-Feb-1937 with a 38 hp ABC Scorpion engine. One was built but it disappeared in WWII. In Dec-1972 Gunnar Fjord Christensen began building a replica, with a 50 hp Volkswagen 1500cc engine, but when almost complete he sold it in 1977 due to illness to the Dansk Veteranflysamling who finished the work. In Jan-1974 it was allotted OY-CMZ but this was not taken up. It became OY-8604, later changed to OY-8605. The first flight was made 20-Nov-1988 and it was registered in Dec-1988. It is displayed in the Danmarks Flymuseum.