As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EIGHT BUSHINGS FAILED WITHIN 15 HOURS OF OPERATION. THE PROBLEM WAS INDICATED BY BRASS METALIC DUST IN THE OIL FILTER. THIS LOOKED SIMILAR TO METALIC PAINT FLAKE SUSPENDED IN THE OIL. THE ROCKER ARMS WERE REMOVED AND BUSHING CLEARANCE WAS MEASURED. THE WEAR WAS BETWEEN .006 AND .009. MANUFACTURERS NEW LIMIT IS .0025 AND SERVICE LIMIT IS .004. PROBABLE CAUSE MAY BE DEFECTIVE MATERIAL.