As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNIT REMOVED BECAUSE OF EXCESS VIBRATION. ANIT DRIVE END BEARING HAD FAILED. THIS BEARING IS RETAINED AND DOES NOT MOVE. THE DRIVE END BEARING WHICH SHOULD FLOAT WAS RUSTED SOLID IN THE LINER BUT HAD NOT FAILED. BEARING SHOULD BE INSTALLED WITH LUBE ON RACE TO PREVENT THIS SITUATION