Air Crash İnvestigation- 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.