What happens when the fuel pressure drops below specified limits?

When the fuel pressure drops below specified limits, a fuel pressure warning light is activated to alert the pilot to a potentially hazardous situation. This warning system is critical because maintaining adequate fuel pressure is essential for proper engine performance. A drop in fuel pressure can lead to insufficient fuel delivery, which may cause engine performance issues or even engine failure if not addressed. The warning light provides immediate indication, allowing the crew to take necessary actions—such as adjusting the fuel flow or preparing for a potential engine shutdown—to ensure safety.