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Meeting	ACGS Committee Meeting 102 - Niagara Falls - October 2008
Agenda Location	6 SUBCOMMITTEE C - AVIONICS AND SYSTEM INTEGRATION 6.1 TCAS Performance Monitoring
Title	TCAS Performance Monitoring
Presenter	Carl Jezierski
Affiliation	FAA
Available Downloads*	presentation
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Abstract	The Traffic Alert and Collision Avoidance System (TCAS) is an airborne system developed by the FAA in the 1980’s that operates independently from the ground-based Air Traffic Control (ATC) system. As TCAS has matured, modifications to the collision avoidance logic were made to optimize its performance. Further evolution is expected as we move into the NextGen environment. To satisfy the FAA Safety Management System (SMS) regarding the introduction of new systems, a need has been identified to monitor TCAS operations and performance via capture and analysis of resolution advisory (RA) related communications. This paper describes the TCAS RA Monitoring System (TRAMS), a new distributed ground-based system, consisting of 20 remote sites, that captures airborne RA communications and associated surveillance data in real-time and transmits this information daily to a central facility for analysis and archive. The overall goal of TRAMS is to enable analysis of TCAS performance and facilitate changes in the airspace.