It's a bit of a complicated trip, but that air ends up cooled and mixed with air from the cabin. At each stage of compression, the air gets hotter, and at the point where the heat and pressure are highest, some air is diverted, some going to the cabin.
Southwest airlines book flight for sudden death series#
Turbofan (jet) engines compress intake air with a series of vaned rotors right behind the fan. The Smithsonian Institution's Air & Space magazine explained that the air on an airliner is pressurised by the engines. The crash was caused when an improperly secured cargo door at the rear of the plane broke off, causing an explosive decompression which severed cables necessary to control the aircraft, the Wikipedia entry said. Turkish Airlines flight 981 from Istanbul to London crashed outside Paris in March 1974. A flight attendant told her oxygen masks weren't needed because the plane wasn't high enough.Ī cargo door flaw was also to blame for what, at the time, was the deadliest plane crash in history. All the overhead baggage was spilling out".
"All the lining inside was starting to rip apart. There was an incredible noise of rushing air and the cabin filled with some kind of fog. Talking about the disaster quarter of a century later she said there had been a sudden, loud hissing noise, followed by an "almighty thud", about 20 minutes into the flight. Īlso on board the plane was Bev Thomas from Hawke's Bay, New Zealand. The damaged engine on the Southwest Airlines plane being inspected at Philadelphia International Airport. As early as 1975, it was realised that the locking mechanism wasn't up to the job, and airlines were asked to fit double locks. It turned out Boeing had known about potential problems with the cargo doors on 747s for some time. Kevin and Susan Campbell went to Honolulu and began an investigation independently of the NTSB in the aftermath of their son's death. The opening of the door - attributed to a faulty switch or wiring in the door control system - caused extensive damage to the fuselage and cabin structure next to the door. The plane returned to Honolulu.Īccording to the US National Transportation Safety Board (NTSB), the probable cause of the disaster was the sudden opening of a forward cargo door and subsequent explosive decompression.
In contrast, a gaping hole in United Airlines flight 811 - flying from Los Angeles to Sydney, with stopovers in Honolulu and Auckland - in February 1989 led to the deaths of nine passengers, including New Zealander Lee Campbell.
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