As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER FINDING MAGNETIC METAL FLAKES IN OIL FILTER AT ANNUAL INSP, ENGINE WAS REMOVED FROM SERVICE AND DISASSEMBLED. INSP REVEALED SEVERE FLAKING AND SPALLING OF 2 EA TAPPET FACES AND DAMAGE TO THE CORRESPONDING CAM LOBES. NONE AT THIS TIME. SUSPECT MFG PROBLEM. THIS IS THE 2ND TAPPET FAILURE WITH LESS THAN 200 HR SINCE NEW IN ACFT FLEET.