As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEAR DETECTED ON THE YAW ACTUATOR OF THE TAIL ROTOR IN THE CARDAN JOINT (CLEVIS) BUSHING BORE WHERE THE BOLT ATTACHES TO THE LOWER MOUNT SUPPORT. BORE WAS WORN TO AN EGG SHAPE. THE SUBJECT OF THIS PROBLEM IS ADDRESSED IN MFG ALERT SERVICE BULLETIN ASB-MBB-BK117-40-112 ISSUED MARCH 19,2007. PART ON ORDER.