What was found
A NICK ON THE INTERMEDIATE CASE MOUNTING LOCATIONSBY PWC IDENTI?ED BY P&WC (CUSTOMER) ON ENGINE PW815GA S/N PCE-GA0045 DURING ENGINE INSTALLATION. SUBJECT ENG WAS PREVIOUSLY INSPECTED & REPAIRED BY MTU. IN RESPONSE, MTU INITIATED AN INVESTIGATION TO DETERMINE THE POTENTIAL SOURCE OF THE QUALITY ESCAPE. ASSESSMENT CONSIDERED POSSIBLE ORIGINS WITHIN THE TEST CELL, SHOP ENVIRONMENT, ASSY ACTIVITIES, AND POSSIBILITY THAT DAMAGE WAS NOT DETECTED DURING INSP. WHILE EXACT ORIGIN COULD NOT BE DETERMINED, BOTH DAMAGE DURING BUILD-UP/ASSY & MISSED DETECTION DURING INSP REMAINED POSSIBLE SCENARIOS. AS PART OF THE CONTAINMENT ACTIONS, ADDITIONAL INTERMEDIATE CASES IN WORK-IN-PROGRESS ARE REVIEWED. PWC (OEM) WAS INFORMED THAT FURTHER 3 ENGS AT OTHER CUSTOMER LOCATIONS MAY POTENTIALLY BE AFFECTED. FOR THE TIME BEING THESE ENGINES ARE CONSIDERED SERVICEABEL AS RELATED INSPECTION WORK MUST BE APPLIED DURING INSTALLATION.