P-8A Poseidon – Operating Limitations Practice Exam

When does the fuel temperature OVHT light illuminate for a non-feeding tank?

50 °C 60 °C 70 °C 80 °C

Correct Answer:

60 °C

Explanation:

High fuel temperature in a non-feeding tank triggers a warning at a fixed limit to protect fuel integrity and the fuel system. For this aircraft’s non-feeding tank, that limit is 60 °C. When the tank fuel reaches 60 °C, the OVHT light comes on to alert the crew to potential issues and to consider cooling or changing operating plans before relying on that tank. Temperatures below the limit won’t cause the light to illuminate, while higher values would indicate a more severe condition beyond the standard warning threshold.

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