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On 11 February 1978, Pacific Western Airlines Flight 314, a Boeing 737-200 crashed at Cranbrook/Canadian Rockies International Airport, near Cranbook, British Columbia, Canada, killing 42 of the 49 people on board.〔("Accident description" ) ''Aviation Safety Network''〕 The scheduled flight from Edmonton International Airport to Castlegar Airport via Calgary, Alberta and Cranbrook, British Columbia crashed after its thrust reversers did not fully stow following an aborted landing to avoid a snowplow on the runway. Calgary air traffic control was considerably in error in its calculation of the Cranbrook arrival time and the flight crew did not report while passing a beacon on final approach.〔("ATC transcript Pacific Western Flight 314 – 11 Feb 1978" ) ''Aviation Safety Network''〕〔(February 11, 1978 : Cranbrook, BC, Canada : Pacific Western Airlines, Flight 314 : Boeing B-737-275 (sic) : C-FPWC ) ''Plane Crash Info''〕 The investigation was conducted by the Aviation Safety Investigation Division of Transport Canada and audited by the Aircraft Accident Review Board.〔 (from Library and archives Canada cataloguing data)〕 ==Accident sequence== Cranbook is an uncontrolled airport, but it is in controlled airspace. Therefore there was no legal requirement to get permission for landing after clearance for the approach was given. At the time of accident, it was snowing with visibility of 3/4-mile. Snowplow operator was informed that estimated time of Flight 314 arrival would be 2000Z. Flight 314 touched down at 1955Z, approximately 800 feet from the runway threshold. Reverse thrust was engaged. Almost immediately, reverse thrust was cancelled and a go-around was attempted. The aircraft became airborne prior to the runway 2000 foot point, and flew over the snowplow at 50 to 70 feet of altitude. The aircraft climbed to 300–400 feet above the airfield, banked steeply to the left, and side-slipped into the ground. At impact, the left thrust reverser was fully deployed and the right thrust reverser was nearly stowed. Left engine was near idle power, right engine was developing power, and there was full right rudder and aileron. Gear was down and flaps were at cca 20 degrees. Boeing simulations showed that aircraft was controllable with one engine at idle reverse and the other at full forward thrust in gear up, flaps 15 configuration. With flaps 25 and gear down, it was not possible to maintain level flight. The go-around would have been successful if the left engine thrust reverse doors had not been deployed. 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「Pacific Western Airlines Flight 314」の詳細全文を読む スポンサード リンク
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