The Antonov An-22 Antei (Ukrainian: Ан-22 Антей; Russian: Ан-22 Антей[1]) (NATO reporting name Cock) is a heavy military transport aircraft designed by the Antonov Design Bureau in the Soviet Union. Powered by four turboprop engines each driving a pair of contra-rotating propellers, the design was the first Soviet wide-body aircraft and remains the world's largest turboprop-powered aircraft to date. An-22 first appeared for the public outside the Soviet Union at the 1965 Paris Air Show. Since then, the model saw extensive use in major military and humanitarian airlifts of the Soviet Union. (Source Wikipedia)