As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BEARING FAILURE IN UNIVERSAL JOINT. NOTICED BY VIBRATION IN FLIGHT AND CLICKING SOUND ON SHUT DOWN. INVESTIGATION SHOWED OFF SET IN UNIVERSAL JOINT AND EXCESSIVE RUN OUT OF AFT TAIL ROTOR SHAFT. REPLACED UNIVERSAL JOINT, CHECKED RUN OUT, AFT SHAFT AND EXTERIOR SHAFT. AIRCRAFT RETURNED FOR SERVICE.