What was found
DURING A ROUTINE HOT SECTION BOROSCOPE INSP, SEVERAL COMPRESSOR TURBINE BLADES WERE FOUND TO HAVE EROSION THAT EXTENDED INTO THE BLADE TIPS. ENGINE PERFORMANCE RUNS AS WELL AS CURRENT ECTM GRAPHS WERE NORMAL, NO HOT SECTION DETERIORATION WAS OBSERVED. THE POWER SECTION WAS REMOVED, HOT SECTION COMPONENTS INSPECTED AS NECESSARY. THE CT DISK WAS REPAIRED BY INSTALLING NEW CT BLADES 43 (EA). THE REPAIRED CT DISK ASSY WAS REINSTALLED INTO THE POWER SECTION. THE POWER SECTION WAS REINSTALLED AND ALL ASSOCIATED TESTS WERE ACCOMPLISHED WITH NO FURTHER FAULTS FOUND, ALL IAW AMM 12-A-72-10-00-00A-920A-A, 12-A-71-00-00-00A-903A-A AND EMM 72-50-01 ,72-50-02 AND 72-00-00.