As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE QUALITY OF RIDE IN THE HELICOPTER DEGRADED AND THE HUMS SYSTEM ALSO HAD INDICATED AN ISSUE. DURING THE INVESTIGATION, IT WAS FOUND THAT THE PIVOT BEARING HAD SEPARATED FROM THE SPINDLE ASSY. THE SPINDLE ASSY WAS REMOVED AND AN O/H ASSY INSTALLED. SYS WAS TRACKED AND BALANCED AND NO FURTHER ISSUES WERE NOTED.