Final answer:
A FAULT light in the ENG ANTI ICE pb indicates a malfunction in the engine anti-ice system, and pilots should refer to the aircraft's manual or checklist for troubleshooting.
Step-by-step explanation:
The ENG ANTI ICE pb (Engine Anti-Ice pushbutton) is a part of an aircraft's anti-icing system designed to prevent ice accumulation on the engine. When the FAULT light illuminates, it signals a problem with this system. Possible causes include sensor issues, valve malfunctions, or electrical faults. Pilots should refer to the aircraft's documentation and follow the appropriate checklist to identify and rectify the specific fault. Prompt resolution is crucial to ensure the safe operation of the aircraft, especially in icy conditions.
In summary, the FAULT light in the ENG ANTI ICE pb serves as a warning of a malfunction in the engine anti-ice system. Pilots must address the issue promptly using established procedures to maintain the safety and functionality of the aircraft.