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68-15993, Boeing build number B-585, was a CH-47C helicopter. The U.S. Army acceptance date was 21 May 1969. The administrative strike date was 25 February 1980. 68-15993 accumulated approximately 2,135.0 aircraft hours. At some point, 68-15993 was assigned to the 180th Assault Support Helicopter Company (ASHC) - "Big Windy", located at Schwabisch Hall in the Federal Republic of Germany (West Germany), and remained there until it was lost due to an accident. On 25 February 1980, 68-15993 was on a maintenance test flight for installation of the number one engine. At approximately 500 feet, while conducting the turbine engine analysis check (TEAC), the combining transmission phasing mechanism decoupled, resulting in rotor system meshing. The forward and aft transmissions, and rotor systems separated in flight. The aircraft subsequently crashed into a pine forest and was totally destroyed. All 5 occupants sustained fatal injuries during the impact. The last known location of 68-15993 was in the Federal Republic of Germany. Aircraft status: Crashed. |
