What was found
ENGINE FAILURE DURING FLIGHT ON FACTORY REMANUFACTURED ENGINE WITH 406 HRS. INSPECTION FOUND MIS-MANUFACTURED OIL PAN/SUMP ASSOCIATED WITH STC 09319SC. SPECIFIC DEFECT CAUSES INTERFERENCE BETWEEN BOTTOM OF PAN AND OIL PICKUP. PART IS AVAILABLE FOR MEASUREMENT AND INSPECTION. AD REQUIRING IMMEDIATE REMOVAL OF STC 09319SC OR INSPECTION FOR CLEARANCE IN OIL PAN. REVIEW QC PROCESSES AT VENDOR AND THEIR SUB-CONTRACTED SUPPLIER. NEED TO INVESTIGATE HOW FAILURE WAS MISSED AT 2 FACILITIES.