JAPAN AIRLINES FLIGHT 123
Aviation accident is defined by events associated with an aircraft that has the risk of affecting the safety of operations which takes place between the time any person boards the aircraft with the intention of flight until such time as the passengers have disembarked, in which a person is fatally or seriously injured, the aircraft sustains damage or structural failure or the aircraft is missing or is completely inaccessible.
An accident in which the damage to the aircraft is such that it must be written off, or in which the plane is destroyed is called a hull loss accident.
Over the years, there are many aircraft accidents but there are a few major accidents ...view middle of the document...
The aircraft was refuelled and new flight crew boarded, while the cabin crew remained from the previous flight. JAL123 was ready for the flight to Osaka which was 400km away.
In command of the flight was Captain Masami Takahama, who was a Training Captain. The flight took off and minutes later Tokyo ATC was tracking the flight, the emergency transponder code appeared on their screen, which was 7700. This is the emergency complain for aircraft in distress.
The controller noticed that instead of turning back toward Oshima Island, the aircraft was making only a gradual turn to the right. Crossing the Izu Peninsula and leaving it , it then headed out over Suruga Bay in a north-westerly direction. The aircraft had suffered an explosive decompression of its rear vertical tail plane, losing a section of the vertical stabliliser and making all its flying controls useless.
The aircraft impacted near the top of Mount Osutaka, killing all but four people on board. The cause was found to be an improperly repaired rear pressure bulkhead, which had been repaired by Boeing some years before, after the aircraft had been involved in a tail scrape on landing. This caused the explosion at the aft and failing the hydraulic system thus loss of the flying surfaces in the tail, and the control surfaces to a certain extent on the wings. Up until today, this accident is still considered as the worst accident involving a single airliner in the world.
The outcome of the event was that the Japanese public's confidence in Japan Airlines took a dramatic downturn and the number of passengers dropped to one-third. Months...