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Sana Obruent Is: Paul Lopez
日本航空123便:
Recorded at the TSC Hideaway Studio - Somewhere In California - August - December - 2017.
Liner Notes:
日本航空123便 -
JA8119 Flight 123 Accident (Mt. Osutaka Accident)
JAL flight 123, JA8119 took off from Haneda Airport at 18:12 on August 12, 1985, bound for Osaka's Itami Airport with 509 passengers and 15 crew on board.
At 18:24:35, just before reaching the cruising altitude of 24,000 feet (7,315m) and approaching the east coast of the Izu Peninsula, there was a booming noise and the aircraft experienced an emergency situation which had serious impact on its further flight.
The aft pressure bulkhead was ruptured and the pressurized air in the cabin blew out into the aft fuselage, blowing off the APU (Auxiliary Power Unit), portions of the tail cone and forcing a considerable part of the vertical stabilizer to break off. Simultaneously all four hydraulic systems were severed, rendering the flight control surfaces inoperable.
After that, the aircraft continued to fly with severe Dutch roll and phugoid motions for about 32 minutes, finally crashing at about 18:56 into the south ridge of Mount Osutaka (1,565m) near Ueno village, Tano Country in Gunma Prefecture.
The probable cause of this accident is explained as follows. JA8119 had experienced a tail strike on the runway during landing at Itami Airport seven years before (1978). Boeing had carried out inappropriate repair work when splicing the replacement lower half of the aft pressure bulkhead to the upper half. This had resulted in the formation of many small fatigue cracks originating from the area of the joint and these had gradually extended over the subsequent seven years. The cracks had spread, connecting with each other, so that on this flight, when the pressure difference between the cabin and the fuselage aft of the bulkhead increased, the bulkhead finally fractured violently, creating an operating between two to three meters in size.
Investigation and rescue operations were started immediately. However, the official search and rescue unit arrived at the crash site early the next morning because the crash site was in a remote district and it had taken a long time to pinpoint the location. Of the total of 524 on board, there were four heavily injured survivors and 520 fatalities.
It is the deadliest single-aircraft accident in history, the deadliest aviation accident in Japan, the second-deadliest Boeing 747 accident and the second-deadliest aviation accident after the 1977 Tenerife airport disaster.
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