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Columbia's final overhaul included new wiring, increased thermal protection

...wiring. In its last mission before the overhaul, July 1999, a worn wire caused a power fluctuation that led two engine controllers to shut down five seconds after launch. Backup controllers took over automatically and the flight was not affected...
Augusta's Still to guide astronauts into orbit

...system OMS: orbital maneuvering system SSME: space shuttle main engines GPC: general purpose computers MEC: main engine controller IEA: integrated electronic assembly MLS: microwave landing system VFR: visual flight rules TACAN: tactical air...
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