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Air Inter Flight 148 was a scheduled airline flight on 20 January 1992 that crashed in the Vosges Mountains, near Mont Sainte-Odile, while circling to land at Strasbourg Airport. Of 96 people on board, nine survived. ==Accident== Flight 148, commanded by Captain Christian Hecquet and First Officer Joël Cherubin, departed Satolas Airport (now known as Lyon-Saint Exupéry Airport) in Lyon, France. While being vectored for a VOR/DME approach to runway 05 at Strasbourg, it crashed at 19:20:33 CET (18:20:33 UTC) in the mountains at an altitude of .〔 The pilots had no warning of the imminent impact because Air Inter had not equipped its aircraft with a ground proximity warning system (GPWS). It is speculated that this was because Air Inter – facing ferocious competition from France's TGV high-speed trains – may have encouraged its pilots to fly fast at low level (up to 350 knots below 10,000 feet, while other airlines generally do not exceed 250 knots), and GPWS systems gave too many nuisance warnings.〔"The Final Blow," ''Mayday''〕 The accident occurred at night, under low cloud and with light snow. Flight 148 was the third in a series of crashes caused, at least in part, by what was believed to be pilots' unfamiliarity with the sophisticated computer system of the Airbus A320. The Bureau d'Enquêtes et d'Analyses pour la Sécurité de l'Aviation Civile (BEA) believe that Flight 148 crashed because the pilots inadvertently left the autopilot set in Vertical Speed mode (instead of Flight Path Angle mode) then entered "33" for "3.3° descent angle", which for the autopilot meant a descent rate of per minute.〔 Accident investigators determined that there was no single cause of the accident, but rather multiple factors that contributed to the crash. On the approach to the airport Air Traffic Control incorrectly warned the crew that they were to the "right" of the runway, causing the flight crew to experience high workload. When investigators input the descent rate, which had been set into a flight simulator, the aircraft initially did not crash. Further investigation revealed, however, that when a small amount of turbulence was introduced, a safety feature of the autopilot further increased the descent rate, adding to the chain of events that led to the crash.〔"The Final Blow," ''Mayday''〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Air Inter Flight 148」の詳細全文を読む スポンサード リンク
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