SC-147, Traffic Alert & Collision Avoidance System (TCAS)

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SC-147, Traffic Alert & Collision Avoidance System (TCAS), established November 1, 1980, has defined and updated the TCAS and TCAS II performance standards, thereby contributing to one of the most significant advances in aviation safety in the past twenty years.

The committee is working on a Aircraft Collision Avoidance System for NextGen, or ACAS X.  The foundational system to be specified will be ACAS Xa nd ACAS Xo.   ACAS Xa will be a “drop-in” replacement for TCAS II and ACAS Xo will support advanced in flight services.  the committee has recently completed ACAS Xu for Unmanned Aircraft Systems and is currently developing ACAS sXu, for Small UAS.  Following that, ACAS Xr for rotorcraft and AAM/UAM applications will be developed.


Co-ChairJ. Stuart SearightFederal Aviation Administration
Co-ChairRuy BrandaoHoneywell International, Inc.
WG-75 Co-ChairGuido ManfrediVolocopter
Government Authorized RepresentativeMatt HaskinFederal Aviation Administration
Program DirectorBrandi TeelRTCA, Inc.

General Information

Terms of Reference
Committee Documents
Next Meeting Agenda
2023 Meetings
March 16, 2023

Contact Information

For additional meeting summaries, please contact the Program Director: Brandi Teel

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