The Yakovlev Yak-52 & Yak-50 are a Soviet primary trainer aircraft. The Yak-52 was designed originally as an aerobatic trainer for students in the Soviet DOSAAF training organization. That organization trained both civilian sport pilots and military pilots. The single-seat Yakovlev Yak-50 aerobatic aircraft is an all-metal low-wing monoplane with retractable main wheels and exposed tail wheel. The control surfaces are fabric-covered to save weight. The aircraft is not equipped with flaps.