Question 19Gas Turbine - 1st Asst/Chief

The correct answer is A) Condition could be the result of blade root failure. Engine should be taken out of service until condition can be evaluated. This is the correct answer because a slight tilt of the blade and raised blade platform in the compressor section of a gas turbine engine is likely indicative of a blade root failure. Blade root failures can lead to progressive and catastrophic damage to the engine, so the prudent course of action is to remove the engine from service and thoroughly inspect and evaluate the condition before attempting to operate it again. The other answer choices are incorrect because FOD damage, metal fatigue, or ice damage would not necessarily cause this specific symptom, and attempting to operate the engine in those conditions could lead to further damage and safety issues.