As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE HORIZONTAL HINGE PIN WAS REMOVED FOR A LEAKING SEAL. THE HINGE PIN WAS REMOVED AND THE LEADING SLEEVE REMAINED IN THE BEARING. THE SLEEVE WAS SPLIT AND THE BEARING WAS REMOVED WITH THE SLEEVE STILL INSTALLED. A NEW BEARING AND HORIZONTAL HINGE PIN WERE INSTALLED. THE ROTOR HEAD ASSY A5-1503 HAS ACCUMULATED 212 HOURS SINCE CENTER HUB REPLACEMENT. (X)