Controller Assigned Airborne Separation (CAAS) Result of Strategic Pairwise Study
September 2005
Elliott M. Simons, The MITRE Corporation
Christopher T. DeSenti, The MITRE Corporation
Steven L. Estes, The MITRE Corporation
Pamela S. Hawkins, The MITRE Corporation
ABSTRACT
A study of the Controller-Assigned Airborne Separation (CAAS) strategic crossing application has been completed by the MITRE Corporation's Center for Advanced Aviation System Development (CAASD). The strategic CAAS procedure permits delegation of separation authority from the air traffic controller to the aircrew in specific situations, while assisted by ground-based automation for conflict detection and resolution, as well as data communication for clearance delivery.
Nine former Air Traffic Controllers worked various simulated air traffic scenarios both with and without strategic CAAS. Controller performance measures and subjective responses were collected and analyzed. Overall, results indicate that the concept of CAAS is promising. Controllers reported that it could be a useful procedure for reducing workload and therefore contribute to a more productive work environment. They also indicated that it is a reasonable step in the evolution of more sophisticated tools and procedures.
Further research is proposed in four areas: (1) Additional Controller applications for CAAS, (2) pilot evaluations, (3) integrated pilot-controller experiments, and (4) analysis of benefits and costs.
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