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Mayday: Air DisasterInvestigators face puzzling questions when a Boeing 767 crashes into the hillside several miles from South Korea's Gimhae International airport.![Real Disaster Channel]()
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Now PlayingMayday: Air DisasterInvestigators face puzzling questions when a Boeing 767 crashes into the hillside several miles from South Korea's Gimhae International airport.0
Mayday: Air DisasterExperts investigate the collision of two planes over the Grand Canyon in 1956, uncovering a frightening problem that threatened the entire aviation system.