What was found
THE DEFECT DESCRIBED BELOW WAS DISCOVERED DURING INSPECTION OF THE PART ON RECEIPT FROM A 3RD PARTY VENDOR. THE ALLISON GAS TURBINE 250-C20 SERIES OVERHAUL MANUAL, TABLE VI-19, PAGE 6-114, PROVIDES INSPECTION CRITERIA FOR POWER TURBINE INNER SHAFTS. ITEM 27A PROVIDES THE BEARING RACE PITTING SERVICEABLE LIMITS. 'NO PIT LARGER THAN 0.006 INCH WHICH CAN DEFINITELY BE FELT WITH A 0.030 INCH RADIUS SCRIBER' IS ALLOWED. SEVERAL PITS CAN BE DETECTED WITH A 0.030 INCH SCRIBER, THEREFORE, THIS SHAFT IS NOT SERVICEABLE.