What does a center tank transfer pump fault light indicate?

The center tank transfer pump fault light is designed to provide critical information regarding the operation of the fuel system. When this light illuminates, it indicates that there is a specific issue with the pump system that affects fuel transfer from the center tank.

The correct choice highlights that the light could trigger if the associated wing tank is overflowing. When fuel is pumped from the center tank to the wing tanks, a failure in the pump system may cause an overflow in the wing tank, leading to safety concerns. This is particularly significant because managing fuel levels is crucial for the aircraft's performance and safety. The failure of a pump might prevent the fuel from being moved as needed, leading to this scenario.

Understanding the implications of a center tank transfer pump fault light is fundamental for effective fuel management and helps ensure that the aircraft operates safely.