Final answer:
The amber FAULT light in the SYS pb on the GPWS panel indicates a system fault in the Ground Proximity Warning System.
Step-by-step explanation:
The amber FAULT light in the SYS pb on the GPWS panel indicates a system fault in the Ground Proximity Warning System. The GPWS is a safety system on aircraft that alerts pilots to potential hazards, such as too close proximity to the ground or terrain. When the amber FAULT light is illuminated, it means that there is a malfunction in the GPWS system, and it may not provide accurate warnings or alerts.