Boeing 747-200 crash, Aug 12, 1985 (520 killed), Mt Osutaka
Boeing 747-200 accident on August 12, 1985 near Mt Osutaka, Kantō, Japan with 520 fatalities. Cause: Rupture of the aft pressure bulkhead caused by...
- Date: August 12, 1985
- Aircraft: Boeing 747-200
- Location: Mt Osutaka, Kantō, Japan
- Fatalities: 520
- Phase of flight: En route
- Cause: Rupture of the aft pressure bulkhead caused by fatigue cracks at a spliced repair made after a 1978 tail strike, leading to loss of primary flight control, according to the official accident commission finding.
Japan Airlines Flight 123, a Boeing 747SR46, lost its aft pressure bulkhead on 12 August 1985 which severed the tail and the hydraulic flight control systems. The aircraft could not be controlled and crashed on Mount Osutaka, killing 520 people; four survived.