What was found
BOOSTER SPOOL ASSY, THE SUBJECT BOOSTER SPOOL ASSY HAS FRETTING ON SURFACE B 0.005” IN DEPTH. THERE IS NO INSPECTION CRITERIA TO ACCEPT THIS IN 72-21-04. DR 02369450 STATES THERE IS NO REPAIR SOLUTION FOR THIS FINDING AND IS BEYOND ACCEPTABLE LIMITS FOR CFM TO SUBSTANTIATE THROUGH THE DEVIATION PROCESS. TO BE REPORTED IAW AMC-20 8A, ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL-SERVICE LIFE.