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Aviation abbreviation

Airborne Collision Avoidance System

ABBR · Safety

At a glance

Meaning of Airborne Collision Avoidance System

The international term for an airborne collision-avoidance system.

More about Airborne Collision Avoidance System

ACAS uses information about nearby aircraft to support collision avoidance. TCAS is a particular implementation associated with this function.

The alerts and guidance available depend on the installed version and conditions. The system supplements established traffic-management procedures rather than replacing all air traffic control or visual observation.