YAH-64 (Hughes 1975)

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In 1973, the Hughes Model 77 was selected as the winner of the Army's advanced attack helicopter (AAH) competition. The prototype made its first flight in 1975 as the YAH-64, and in 1976 the company received a full-scale development contract. In 1982 the Army gave the program, now known as AH-64A Apache, production go-ahead. Deliveries of production Apaches began in 1984.