MULTI-CENTER TRAFFIC MANAGEMENT ADVISOR INITIAL FIELD TEST RESULTS Todd Farley, Ty Hoang, Steven Landry, Monicarol Nickelson, Kerry Levin, and Dennis Rowe Abstract The Multi-Center Traffic Management Advisor (multi-center TMA) is a decision-support tool designed to help traffic management personnel in adjacent facilities develop and implement a coordinated, multi-facility time-based metering program to manage arrival demand for a terminal area. Real-time, controller-in-the-loop simulation studies suggest that multi-center TMA has the potential to improve arrival planning and coordination, reduce flow restrictions, and stabilize controller workload. This paper discusses a series of field test activities conducted between January and May 2003 to verify and validate the system architecture and to refine the operational concept, user interfaces, and system design. Field test methods, data, observations and conclusions are presented. The results of this initial set of field test activities confirm that the multi-center TMA architecture equitably distributes traffic management data among several facilities in a timely manner. The results further suggest that, using this shared information with the applications made available by multi-center TMA, traffic management coordinators at multiple facilities will be able to effectively implement time-based metering in the heavily congested arrival airspace to Philadelphia. A concept of use for multi-center TMA is also discussed.