If the lube oil scavenge temperature exceeds 300 degrees F on the marine gas turbine engine shown, and reducing power does NOT bring the temperature within limits, the operator should _________. Illustration GT-0017

Correct Answer: Option D — shutdown the engine and troubleshoot

Exceeding 300 degrees F in the scavenge oil indicates a severe thermal overload or mechanical failure, such as bearing distress. If power reduction fails to lower the temperature, immediate shutdown is mandatory to prevent catastrophic engine damage, fire, or total seizure of the turbine rotor assembly.