As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION METAL CONTAMINATION WAS DISCOVERED IN THE OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR1 AND NR2 INTAKE LOBES WERE EXCESSIVE. NR1 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NOTE: THIS IS THE 18TH ENGINE IN THREE YEARS.