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Mayday: Air Disaster S4 Ep5: Mystery CrashesMystery surrounds two 737 crashes until USAir Flight 427's near miss gives investigators the information to solve the case.![Mayday: Air Disaster]()

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Now PlayingMayday: Air Disaster S4 Ep5: Mystery CrashesMystery surrounds two 737 crashes until USAir Flight 427's near miss gives investigators the information to solve the case.0
Mayday: Air DisasterAfter a routine landing, a Taiwanese commuter plane is rocked by a massive explosion, but investigators find no evidence of a bomb on board.