As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) INSPECTION FOUND M50 METAL IN THE REDUCTION GEARBOX DURING ROUTINE INSPECTION, AND WAS SENT FOR OVERHAUL. DISASSEMBLY OF THE RGB FOUND THE METAL CONTAMINATION WAS FROM A SEVERELY WORN NR 15 BEARING, WITH MATERIAL LOSS FROM THE OUTER RACE AND THE ROLLERS.