Engine Gas Turbines (Supplementary) USCG Question #199 (Set 6)

You are conducting a borescope inspection of the combustor section of a LM2500 gas turbine engine. You observe a one square inch hole in the combustor dome where burn through has removed the metal. What would be your course of action?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Record the damage and continue to operate the engine while monitoring the high pressure turbine temperatures and nozzle condition.

Minor burn-through in the combustor dome is often within established operational limits defined by the engine manufacturer's technical manual. Provided the damage does not threaten structural integrity or cause excessive turbine inlet temperatures, the engine may continue to operate while being closely monitored for further degradation or thermal distress.

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