The SAI KZ IV there was an air ambulance, which was built during the German occupation of Denmark in World War II by the Skandinavisk Aero Industri.

The KZ IV was a twin-engine low-wing aircraft, which was built in wood. They also had two rudders and a solid spur wheel chassis. It was powered by two Gipsy Major X propeller engines each with 107 kW ( 145 hp ), which were located in nacelles on the wings. You could carry a crew of two persons two patients on stretchers and two attendants.

Overall, only two were built, the first one with the identifier OY - DIZ in 1944, and the second, with the identification OY DZU after the war in 1949. The first machine was badly damaged after an accident and 13 years restored to its original state and is now in the Dansk Veteranflysamling after she had a long career as a multi-purpose aircraft in England. She is still in normal flying order. The second machine is currently in the Danish Technical Museum in Helsingør.