What was found
DURING INSPECTION OF ENGINE, SN P673149NB, A CRACKED INLET GUIDE VANE PROMPTED REMOVAL OF INLET CASE FOR REPAIRS. WITH CASE REMOVED, A COMPRESSOR BLADE RUB, WHICH RESULTED IN DETERIORATION TO A STATOR, WAS NOTED AND REPORTED. AUTHORIZATION WAS RECEIVED FROM CUSTOMER TO DISASSEMBLE COMPRESSOR FOR FURTHER INVESTIGATION. UPON DISASSEMBLY OF COMPRESSOR, SEVERE CORROSION NOTED ON STEEL COMPONENTS. A CORROSION INSPECTION AND SUBSEQUENT COMPRESSOR OVERHAUL PER P&WA, SB 1508R16, WAS INITIATED.