As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIVETED (NON-ADJUSTABLE) BEARING STIFF AND ROUGH. THIS BEARING ATTACHED TO THE PITCH CHANGE BELLCRANK BELOW THE TAIL ROTOR GEARBOX- REF. 407 IPC A667-15. THIS PROBLEM COULD BE RELATED TO THE TAIL ROTOR GEARBOX BREATHER TUBE VENTING ABOVE THELOCATION OF THIS ROD ASSEMBLY WHEN INSTALLED. THE UNSERVICEABLE BEARING WAS FOUND TO BE COVERED WITH A FILM OF OIL.