In an effort to enhance aviation safety and prevent potential plane crashes, commercial airplanes are equipped with a critical safety system known as TCAS (Traffic Alert and Collision Avoidance System) or ACAS (Airborne Collision Avoidance System). These systems play a crucial role in alerting pilots to the presence of nearby aircraft, thereby reducing the risk of mid-air collisions.
TCAS and ACAS operate by providing pilots with real-time information on the positions and relative altitudes of other transponder-equipped aircraft in the vicinity. This data is displayed to the pilots, enabling them to make informed decisions to maintain a safe distance from other planes.