Abstract
An aero gas turbine engine is investigated for foreign object damage. Extensive damage in the low pressure compressor and abnormal noise forced the engine to shut down. Metallic screw type foreign object debris was retrieved from air intake fairing. Chemical analysis of the metallic debris and failed surface of LP compressor blade show the smearing of blade material on the debris and debris material on compressor blade. This confirms that impact of metallic foreign debris has caused extensive damage to LP compressor blades. The paper presents the details of investigation carried out to assess the extent of damage and its root cause. Effective foreign object prevention and elimination program has also been suggested in the paper to address the FOD in aircraft engines.
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