As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT THE PILOT EXPERIENCED AN EXCESSIVE TAIL ROTOR VIBRATION. THE PILOT THEN EXECUTED A PRECAUTIONARY LANDING. WHEN CREW ARRIVED TO INVESTIGATE THE VIBRATION THE INITIAL DISCOVERED WAS THAT THE OUTBOARD TAIL ROTOR FORK BOLT WAS SHEARED.