As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, THE TAIL ROTOR DRIVESHAFT DAMPER BEARING WAS NOTED TO HAVE MOVED ON THE TAIL ROTOR DRIVE SHAFT. THE WITNESS MARKS WERE MOVED ABOUT .250". THE BEARING FEELS FINE, AND THERE DOES NOT APPEAR TO BE ANY OTHER PROBLEMS. ROBINSON HELICOPTERS DOES NOT ALLOW ANY MOVEMENT BETWEEN THE BEARING AND THE DRIVE SHAFT. THE ASSEMBLY IS BEING REMOVED AND RETURNED TO THE FACTORY.