United States Department of Transportation
i
Analysis of US Civil Rotorcraft Accidents by Cost and Injury (1990-1996)
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2002-05-01
[PDF-2.16 MB]
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Abstract:The present analysis is the third in a series commissioned by NASA Ames Research Center. Two other helicopter accident analyses sponsored by NASA have been completed. The largest study, performed by Harris, Iseler and Kasper (in press), looked at all civil rotorcraft accidents recorded in the past 35 years. That study gave an overview of the statistical trends. A narrow, but very thorough study was performed by the Helicopter Accident Analysis Team (HAAT, 1998). The HAAT study, conducted by a team of 20 experts from all aspects of rotorcraft aviation, reviewed the full accident reports for 34 fatal accidents. The team determined a chain of events that lead to each accident and then suggested a number of potential solutions for each accident. The theory behind these solutions was that if any event in the chain were prevented, then the accident would have been prevented. The third study, discussed in this paper, looked at seven years of rotorcraft accidents with a moderate level of resolution. This study looked solely at the first event, rather than the chain of events leading to each accident. Taken together, the three studies give some understanding of the overall problems of civil rotorcraft accidents.
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