This model is a Saab Safir type 91B to 91D. Swedish Air Force designation Sk50B and Sk50C. It was equipped with a boxer engine, 6 cyl, 190 hp Lycoming 0-435 with the 91B model and a 4 cyl, 180 hp Lycoming O-360-A-1B engine. The 91C model could carry 4 persons earlier 91A and B only 3 persons.
Saab 91 Safir made its first flight 45-11-20 and a total of 323 aircraft was built by Saab. A total of 7 Air Force used the Saab 91 as a trainer.