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Old 22nd Aug 2011, 13:42
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India Four Two
 
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Another DC-10 "reject after V1" overrun at Vancouver in 1995, but with a better outcome than the Garuda accident:
The captain did not recognize the loud bang as a symptom of a compressor stall on the high bypass ratio engine and thought that the noise might have been a bomb. Consequently, he decided to reject the take-off even though the speed was above V1 (the maximum take-off rejection speed). Although the flight crew members were all very experienced pilots and had taken simulator training throughout their careers, they had not been trained to recognize a loud bang as a symptom of a high bypass ratio engine compressor stall, and none of the crew members noticed the cockpit indications of power loss on the left engine.
The captain's decision to reject was based on the fact that he did not recognize the initial sound and subsequent thumping noises, and that, because he thought the bang could have been a bomb, he had concerns about the integrity of the aircraft and its ability to fly. Also, the captain stated that, based on the rejected take-off provisions in the DC-10 Flight Manual and on a fatal DC8 accident that he had witnessed, he had developed a mental rule to not take an aircraft into the air if he suspected that there was aircraft structural failure.

Transportation Safety Board of Canada - AVIATION REPORTS - 1995 - A95H0015

Last edited by India Four Two; 22nd Aug 2011 at 13:45. Reason: Edit URL
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