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Traffic Alert and Collision Avoidance System

abbr. TCAS system (MichaelBurov)
abbr., avia. TCAS (MichaelBurov)
transp., abbr. TCAS
traffic alert and collision avoidance system
avia., Canada A type of airborne collision avoidance system ACAS based on a family of airborne equipment that functions independently of the ground-based ATC system to detect potential conflicting aircraft that are equipped with secondary surveillance radar SSR transponders. There are three different versions: TCAS I provides traffic advisories; TCAS II provides traffic advisories and vertical resolution advisories RA; and TCAS IV, when developed, will provide traffic advisories and vertical and horizontal RAs.
Traffic
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