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Abstract of "Human Error in ATC System Operations "
Title: Human Error in ATC System Operations
Abstract Air traffic control (ATC) system errors rarely occur in today's system. ATC-related aircraft accidents are even rarer events. Nevertheless, more than 90% of all the system errors that do occur stem from human mistakes in attention, judgment, and communications by controllers and their supervisors. Current levels of air traffic are already pressing the capacity of today's system. Future traffic is predicted to increase significantly, but economic and other factors place severe limits on the number of airports and runways that can be built. Resultant traffic congestion and controller work load, despite automation efforts, could increase the error rate and degrade the system's tolerance for errors. Several ATC-related aircraft accidents are summarized to illustrate the controller's changing role and the manner in which the controller interacts with pilots, other controllers, and the work environment. These cases also cite exemplary performance, as well as mistakes, by pilots and controllers, and the circumstances that fostered them, to illustrate the strengths and weaknesses of the human element in the present system. Implications for future ATC system design are discussed.
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