What must a pilot do if a TCAS alert occurs during an ATC clearance?

When a Traffic Collision Avoidance System (TCAS) alert occurs, the pilot is required to notify Air Traffic Control (ATC) and then adhere to the instructions provided by the TCAS. This is vital for safety, as TCAS is designed to prevent mid-air collisions by indicating necessary maneuvering actions to avoid other aircraft. By notifying ATC, the pilot ensures that air traffic management is aware of the situation, allowing them to provide any additional assistance or clearances that may be needed during the avoidance maneuver.

Additionally, following TCAS instructions takes precedence because the system is engineered to respond to immediate collision threats, prioritizing the safety of the aircraft and its occupants. This approach aligns with the responsibilities of pilots to ensure safe operating practices even in the presence of an ATC clearance. The integration of TCAS actions and communication with ATC is crucial for maintaining situational awareness and minimizing risk in the airspace.