Known as the Airborne Collision Avoidance System (ACAS) or Traffic Alert Collision Avoidance System (TCAS), it is a system designed to help increase cockpit awareness of neighboring aircraft and ...

A slew of false Traffic Collision Avoidance System (TCAS) alerts near Reagan National Airport (KDCA) in Washington, D.C., last month has garnered attention from lawmakers. Last week, Sen.