What is the function of the TCAS computer?

The function of the TCAS (Traffic Collision Avoidance System) computer is to perform airspace surveillance, threat detection, and resolution. This system is crucial for enhancing aviation safety by actively monitoring the airspace around an aircraft for other nearby aircraft. The TCAS uses data from its sensors to detect potential collision threats and provides advisories to the pilot on how to avoid these threats, typically through climb or descent instructions.

By monitoring the altitude, speed, and trajectory of other aircraft, TCAS can determine if there is a risk of collision and initiate appropriate responses, which helps pilots take necessary actions to maintain safe separation. This automatic surveillance and response capability is a key reason why TCAS is an essential component of modern commercial aviation safety measures.