What does a fuel pump FAULT light indicate?

The fuel pump FAULT light serves as a critical indicator of the operational status of the fuel system on the aircraft. When this light illuminates, it specifically indicates a problem with fuel pressure, and in this case, it signals low pressure within the fuel pump system.

Low pressure can be concerning because it may lead to an inadequate supply of fuel to the engines, which can affect performance and safety. Monitoring the fuel pump’s pressure is essential to ensure efficient engine operation and to mitigate the risks of engine flameout or failure.

Whereas other options such as MAN mode, over pressure, or X FEED failure relate to different scenarios or states of the fuel system, they do not represent the primary concern indicated by the FAULT light. Understanding this distinction is essential for effective troubleshooting and response in flight operations.