As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE OIL CHANGE, FILTER WAS VISUALLY EXAMINED BEFORE INSTALLATION. METAL RING INSIDE OF O-RING SEAL SURFACE WAS FOUND CRACKED AND CUT. (OIL FILTER LOT NR IS F06J02-1). SUBMITTER STATED ALL FILTERS NEED A VISUAL INSPECTION FOR DEFECTS BEFORE INSTALLATION TO DETECT SUCH PROBLEMS. (X)