What is the function of the fuel pump’s low-pressure warning light?

The function of the fuel pump’s low-pressure warning light is to alert the crew of potential operational issues within the fuel system. When this warning light is activated, it signifies that the fuel pressure has dropped below a prescribed level, indicating a deviation from normal operating conditions. This could lead to insufficient fuel supply to the engines, which poses a significant safety risk.

The low-pressure warning light plays a crucial role in ensuring the crew is aware of potential system failures or malfunctions, allowing them to take necessary actions, such as checking the fuel system, monitoring for further issues, or preparing for possible emergency procedures. Recognizing this warning early helps maintain safe operation of the aircraft by prompting timely corrective measures before more serious problems, such as engine power loss, occur.