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SAI KZ I replika 2.jpg
KZ I replica in Danmarks Flymuseum
Role Sport aircraft
National origin Denmark
Manufacturer Skandinavisk Aero Industri
Designer Viggo Kramme and Karl Gustav Zeuthen
First flight 24 February 1937
Number built 1

The SAI KZ I was a sport aircraft built in Denmark in 1937, the first aircraft built by the Kramme & Zeuthen firm. It was a low-wing cantilever monoplane of conventional design, with fixed tailwheel undercarriage and an open cockpit with a single seat. Construction throughout was of wood.

Only a single KZ I was constructed, and it disappeared during the course of World War II. During the 1970s, a flying replica was built, with work started by Gunnar Fjord Christensen in 1972 and sold to the Danmarks Flymuseum in 1977. The completed aircraft flew for the first time on 20 November 1988, and in 2008 remains part of the museum's collection.


General characteristics

  • Crew: One, pilot
  • Wingspan: 7.20 m (23 ft 8 in)
  • Wing area: 8.4 m2 (90 ft2)
  • Empty weight: 192 kg (422 lb)
  • Gross weight: 325 kg (715 lb)
  • Powerplant: 1 × ABC Scorpion, 37 kW (50 hp)


  • Maximum speed: 180 km/h (110 mph)