As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)WHILE DOING SCHEDULED MAINTENANCE BRONZE METAL CONTAMINATION WAS FOUND IN THE SCAVENGE OIL FILTER. INSPECTION REVEALED THE INNER BEARING ON THE RADIAL DRIVE SHAFT, IN THE ACCESSORY GEARBOX, HAD EXCESSIVE PLAY DUE TO WEAR OF THE BRONZE BEARING CAGE. THE RADIAL DRIVE SHAFT AND THE INNER BEARING WERE REPLACED.