What was found
DURING ROUTINE INSPECTION OF TAILBOOM, DISCOVERED TORN WEAR SLEEVES ON TAIL ROTOR CONTROL TUBE. THE TAIL ROTOR CONTROL TUBE WAS INSTALLED NEW 13.0 PRECEDING THIS DISCOVERY. WEAR SLEEVES ARE PART OF THE CONTROL TUBE ASSY. THE TEARING WAS A RESULT OF CONTACT WITH (BULKHEAD) BEARINGS, PN 350A27-1190-20. DURING REPLACEMENT OF THE TAIL ROTOR CONTROL TUBE, 5 EA NEW BEARINGS WERE ALSO INSTALLED. SUBMITTING A SECOND SDR FOR FAULT DISCOVERED IN BULKHEAD BEARINGS.