On the MAX engine display, what does the additional FUEL FLOW warning light indicate?

On the MAX engine display, what does the additional FUEL FLOW warning light indicate?

• A. Engine fuel flow is abnormally high compared to FMC expected fuel flow
• B. Fuel flow is normal
• C. Fuel pump failed
• D. Fuel flow lower than expected

Answer: (A)

This question tests how the MAX engine display communicates an abnormal fuel condition by comparing actual fuel flow to what the FMC expects. The system watches the real fuel flow and, based on current thrust settings, altitude, and other factors, the flight management computer provides an expected fuel flow value. If the actual flow goes higher than that expected value by the set tolerance, the additional FUEL FLOW warning light comes on to alert the crew of an over-fueling condition. Why this is the best answer: it directly reflects the way the warning is triggered—an actual fuel flow that exceeds the FMC’s predicted value triggers the warning, signaling a potential fault or abnormal operation that needs attention. A fuel pump failure usually affects fuel delivery in a way that would lead to reduced or unstable flow rather than an elevated flow compared to expectations, so it wouldn’t cause this specific warning. A normal fuel flow would not illuminate the warning, and fuel flow lower than expected would trigger a different indication or warning.

This question tests how the MAX engine display communicates an abnormal fuel condition by comparing actual fuel flow to what the FMC expects. The system watches the real fuel flow and, based on current thrust settings, altitude, and other factors, the flight management computer provides an expected fuel flow value. If the actual flow goes higher than that expected value by the set tolerance, the additional FUEL FLOW warning light comes on to alert the crew of an over-fueling condition.

Why this is the best answer: it directly reflects the way the warning is triggered—an actual fuel flow that exceeds the FMC’s predicted value triggers the warning, signaling a potential fault or abnormal operation that needs attention.

A fuel pump failure usually affects fuel delivery in a way that would lead to reduced or unstable flow rather than an elevated flow compared to expectations, so it wouldn’t cause this specific warning. A normal fuel flow would not illuminate the warning, and fuel flow lower than expected would trigger a different indication or warning.