Airborne collision avoidance system
From EUROCONTROL ATM Lexicon
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| Term | airborne collision avoidance system |
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Abbreviation
ACAS
Definition
An aircraft system based on secondary surveillance radar (SSR) transponder signals which operates independently of ground-based equipment to provide advice to the pilot on potential conflicting aircraft that are equipped with SSR transponders.
Definition Source
ICAO (2006) Official definition taken from doc. PANS-OPS/I Procedures for Air Navigation Services — Aircraft Operations — Flight Procedures [Doc 8168/I] 2006
