What was found
(CAN) OPER REPORTED METAL CONTAMINATION OF RGB. RGB FOUND COMPLETELY CLEAN WITH NO SIGN OF METAL CONTAMINATION. TURBOMACHINE CHIP DETECTOR CHECKED, FOUND A SINGLE FLAKE OF SHINY METAL . FILTERS CHECKED FOR CONTENT ANALYSIS. TURBOMACHINERY FILTER FND HEAVILY CONTAMINATED WITH M50 MAT'L. SOURCE OF METAL CONTAM IDENTIFIED FROM A SPALLED OIL PUMP DRIVE BRG. SECONDARY DAMAGE NOT EXTENSIVE, RESTRICTED TO COMPONENTS IN ACCY G/B OF REAR INLET CASE. BRG NEVER REPLACED. ORIG BRG FITTED TO ENG AT NEW PRODUCTION. ENG HAS HISTORY OF VIBRATION , POSSIBLE OIL PUMP DR BRG SUSTAINED DAMAGE OR REACHED ITS LIFE-LIMIT. PART TC: 19,018.