Abstract
The case-control methodology is presented as an underused, yet versatile technique for studying risk factors in aviation accidents. By comparing information from accident flights and control flights conducted under similar circumstances, multiple hypotheses may be tested as they pertain to the accident outcome. This paper outlines practical methods for identifying and collecting aviation accident case-control data and presents examples in the context of an ongoing National Transportation Safety Board (NTSB) study of weather-related general aviation accidents. The paper includes a summary of study data collection from the point of initial accident notification, to identifying and gathering data from matching control pilots. Discussion of the specific difficulties and potential problems associated with the method is also included.
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