Errors in Aviation Maintenance: Taxonomy and Control

Abstract

Maintenance errors account for a small, but highly visible, portion of aviation-related accidents and fatalities. To measure, and hence eventually control, errors in any field requires a taxonomy which enumerates and classifies the errors. This taxonomy can come from reported errors, but a pro-active system is needed to cover potential errors, as well as those which happen to have been committed and recorded so far. A standard starting point for human and system errors is the description and analysis of those tasks necessary to complete the maintenance-inspection requirements of aircraft in an approved manner. As each step of this Task Description is listed, the failure modes associated with that step can be logically deduced. Following an extensive Task Description and Analysis of aircraft maintenance, an error taxonomy was developed from the failure modes of each task. From current theoretical approaches to human error come ways of extending this classification, and of relating potential errors to levels of human functioning within the system.

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