The Single Deadliest Air Crash In History: Japan Airlines Flight 123 | Mayday S3 EP3 | Wonder

On 12 August 1985, Japan Airlines 123 departs from Haneda Airport on a routine flight to Osaka. But when an improperly installed doubler plate causes rapid decompression, the plane crashes into Mount Takamagahara, killing 520 people and becoming the deadliest single-aircraft accident in aviation history.

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Revealing the dark truth that aviation safety improves one crash at a time, Mayday investigates legendary aviation disasters to find out what went wrong and why.

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