As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING O/H CAM OF ENGINE, NEW BEARING INSPECTED PRIOR TO INSTALLATION NOTICED MARKS ON THE OUTER RACE-WAY AND REJECTED THE BEARING. DURING CLOSER EVALUATION SEVERAL MARKS WERE FOUND ON THE OUTER RACEWAY INSIDE DIAMETER. THIS WAS THE SECOND NEW BEARING THAT WAS REJECTED.