What was found
DURING ROUTINE OIL CHANGE, FOUND ABUNDANT METAL PARTICLES IN OIL FILTER AND FINGER SCREEN. AFTER CONFERRING WITH LYCOMING, ALL CYLINDERS WERE PULLED TO CHECK PILOTED PISTON PIN PLUGS, NO ABNORMAL WEAR WAS NOTED. SENT OIL FILTER AND FINGER SCREEN METAL TO LYCOMING FOR ANALYSIS, FOUND ALL METAL WAS BEARING INSERT MATERIAL. OVERHAUL SHOP NOTED THAT CONNECTING ROD BEARING INSERT WAS FLAKING APART. TOTAL TIME ON FACTORY REMANUFACTURED, 763 HOURS, DATE COMPLETED 10-25-96, POSSIBLE CAUSE: UNKNOWN. (X)