As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE 3 YEAR INSPECTION OF THE MAIN ROTOR SWASHPLATE DUPLEX BEARING AME DISCOVERED ONE OF THE BALLS TO BE SEVERELY SPALLED, BEARING WAS REPLACED AND A/C RETURNED TO SERVICE. SUBSEQUENTLY THE OUTER RACE WAS CUT OPEN REVEALING NO OTHER DAMAGE TO EITHER THE INNER OR OUTER RACES.