If the lube oil scavenge temperature exceeds 300 degrees Fahrenheit on the gas turbine engine shown in the illustration, and reducing power does NOT bring the temperature within limits, the operator should do which of the following? Illustration GT-0017

Correct Answer: Option D — Shutdown the engine and troubleshoot.

Lube oil scavenge temperatures exceeding 300°F indicate severe bearing distress or internal failure. If power reduction fails to lower the temperature, the engine must be shut down immediately to prevent total mechanical seizure or fire. Troubleshooting is mandatory before restarting to identify the root cause of the thermal runaway.