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Abstract
A five-sector simulation was used to investigate the effects of satellite and voice switching system-related communication delays on air traffic control communications. The anticipated maximum delay specifications of the voice-switching systems at the time of the study were used. Under these delay conditions, nine current controllers worked scenarios based on recordings of actual traffic. Communications workload was varied. More communications blocking (step-ons) occurred under very high workload and satellite delays, but no effects of the anticipated switching-system delays were found.
