What should a pilot do in response to a traffic alert from TCAS?

The correct course of action when a pilot receives a traffic alert from the Traffic Collision Avoidance System (TCAS) is to follow the TCAS resolution advisory instructions immediately. TCAS is designed to prevent mid-air collisions by providing pilots with timely advisories based on the aircraft's altitude and the position of nearby aircraft.

When a traffic alert occurs, the system analyzes the relative positions and velocities of surrounding aircraft and gives clear and specific instructions to the pilot. Adhering to these directions is critical, as they are formulated to mitigate the risk of a collision effectively. Ignoring the advisory, even if conditions seem clear, could result in a potentially dangerous situation if another aircraft is indeed on a collision course.

Following the TCAS guidance enables the pilot to take the most effective action, whether it be climbing or descending, ensuring that they maintain safe separation from the other aircraft involved. This prioritization of the TCAS output over less urgent communications or personal judgment is vital to flight safety.