As shown in the illustration of a gas turbine fuel oil system, when the engine fuel oil valves are de-energized, the remaining fuel left in the system is recirculated back to which of the following? Illustration GT-0021
Official USCG Answer & Rule Citation
Correct Answer: Option A — fuel pump inlet
When fuel valves are de-energized, the system design ensures that trapped fuel is safely recirculated to the booster pump inlet. This prevents pressure spikes, maintains system prime, and avoids the need for external venting, ensuring the fuel system remains ready for the next immediate engine start sequence.
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