International Aero Engines (IAE) continues to work on a permanent fix for a corrosion problem that has cracked about 90 V2500 high-pressure compressor drums in three years and forced the original equipment manufacturer (OEM) into recommending more stringent actions than the FAA settled on in a mandatory directive. The cracks are the most extreme result of corrosion being caused by silver chloride deposits on the drums. Last month, the FAA issued its second airworthiness directive (AD ...

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