Airborne collision avoidance system
AVIONICS SYSTEM TO IDENTIFY AND REPORT THE PRESENCE OF NEARBY AIRCRAFT THAT PRESENT A COLLISION RISK
Aircraft collision avoidance system; Aircraft collision avoidance systems; Airborne Collision Avoidance System; ACAS II; Airborne collision avoidance systems
An airborne collision avoidance system (ACAS, usually pronounced as ay-kas) operates independently of ground-based equipment and air traffic control in warning pilots of the presence of other aircraft that may present a threat of collision. If the risk of collision is imminent, the system initiates a maneuver that will reduce the risk of collision.