As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) LOCK FOR BEARING, FOUND BROKEN BY CUSTOMER. UNITS RETURNED FOR METAL CONTAMINATION. ROTOR SHAFT REPAIRED AND BEVEL GEARBOX AND EPICYCLIC OVERHAULED. BEARING PRELOAD IS IMPORTANT DURING REASSEMBLY TO ENSURE LOCK AND THRUST WASHER ARE PROPERLY UNDER LOAD.