A total of 85 Fw44J Stieglitz were bought and built under license in Sweden until 1943. It was used for basic flight training and given the designation Sk12. Serial 670 was built in 1941 and was the last remaining Sk12 with the Swedish Air Force. It served mostly at F5 Ljungbyhed. It was used as a glider tug at Ljungbyhed between 1963 and 1967 as SE-EGB. It was deregistered and passed on to the flight historical collection at Malmen. It last flew in 1976, with the 50th anniversary of the Swedish Air Force.

The Flygvapenmuseum's SK 12 was produced at the Central Aviation Workshop Västerås in 1941 and was used for flight training for over 15 years. During the 1960s, it served as a tug-towing aircraft at Ljungbyhed (ESTL) before making its last flight at the Flygvapnet's 50th anniversary in 1976.