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The original was posted on /r/todayilearned by /u/NeverEnoughMuppets on 2024-04-16 12:29:09.

Original Title: TIL Japan Air Lines Flight 123, being flown by a Boeing 747, crashed on August 12, 1986 due to complications from improper repairs made to the plane by Boeing after a tailstrike in 1978. The crash of Flight 123 is the deadliest single-aircraft accident in aviation history.