As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A 300 HOUR CLUTCH INSPECTION, AN INCORRECT P/N 369A5363 TYPE BEARING WAS FOUND TO BE INSTALLED IN THE -51 CLUTCH. THE BEARING WAS MARKED MRC R12. THE O/H MANUAL STATES THAT THE BEARINGS MARKED MRC R12 MUST NOT BE INSTALLED IN A -51 CLUTCH.