Final answer:
The amber FAULT light in the GALLEY pb signals an electrical problem in the aircraft's galley, requiring crew attention and potential troubleshooting.
Step-by-step explanation:
The amber FAULT light in the GALLEY pb (pushbutton) indicates that there is a problem with the aircraft's galley electrical power. This could be due to a variety of issues such as a circuit breaker being tripped, electrical overload, or a malfunction within the galley's electrical system. The galley is where in-flight meals are prepared and other services are rendered, which requires electrical power to operate ovens, boilers, and other equipment. When the FAULT light is illuminated, the crew should perform troubleshooting procedures as outlined in the aircraft's operating manual to locate and rectify the issue.