Traffic Alert and Collision Avoidance System

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Term Traffic Alert and Collision Avoidance System
Status


Mandatory for


Contexts


Categories
Synonyms


Related entries

Airborne collision avoidance system

Broader term


Narrower term


Abbreviation

TCAS

Definition

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.

Definition Source

Transport Canada, Glossary for Pilots and Air Traffic Services Personnel, URL: http://www.tc.gc.ca/eng/civilaviation/secretariat-terminology-glossary-205.htm

Note

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.