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59-04984, Boeing build number B-003, was a prototype YHC-1B helicopter. The U.S. Army acceptance date was 17 January 1964. The administrative strike date was 1 March 1970. Aircraft hours are unknown. 59-04984 was bailed to Vertol for flight development testing after manufacture. In July 1962, the Department of Defense re-designated all U.S. military aircraft to a new system. All YHC-1B helicopters became YCH-47A. YCH-47A 59-04984 became the test bed for the production of B model Chinooks in 1967. The first flight as a B model test bed was completed on 9 September 1966. As a test bed, this aircraft incorporated the use of Lycoming T55-L-7C engines rated at 2,850 shaft horsepower. At some point, 59-04984 was assigned to Fort Eustis, Virginia, where it was being utilized as a training device in the 67U maintenance course. As of 28 Feb 2006, the last known location of 59-04984 was at Fort Eustis, Virginia, being prepared for restoration as a museum exhibit. Aircraft status: Under-going preservation. |