As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ANNUAL INSPECTION, ROCKER COVERS REMOVED FOR GASKET LEAKS. FOUND PUSH ROD RETAINERS ON NR 1 AND NR 2 CYLINDERS BROKEN. THESE WERE SUPERIOR MILLENIUM CYLINDERS WITH 346 HRS SINCE NEW. SUBMITTER STATED PROBLEM IS BELIEVED TO BE INSUFFICIENT SURFACE AREA FOR THE RETAINER TO SEAT AGAINST.