You are conducting a borescope inspection of the compressor section of a GE LM2500 gas turbine. In stage four, you see a slight tilt to one blade and the blade platform is raised higher than the other blades. What could be a cause of this condition and what would be your course of action?

Correct Answer: Option A — Condition could be the result of blade root failure. Engine should be taken out of service until condition can be evaluated.

A raised blade platform and tilt indicate a potential failure of the blade root or locking mechanism. This is a critical structural integrity issue that risks catastrophic engine failure due to blade liberation. Per USCG safety standards, the engine must be secured immediately to prevent severe internal damage.