The Yakovlev Yak-18 (Russian: Яковлев Як-18) is a tandem two-seat military primary trainer aircraft manufactured in the Soviet Union. Originally powered by one 119 kW (160 hp) Shvetsov M-11FR-1 radial piston engine, it entered service in 1946. It was also produced in Manchuria as the Harbin CJ-5.
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