As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A REGULAR TOUR FLIGHT, THE PILOT EXPERIENCED A HYDRAULIC FAILURE. PILOT AND AIRCRAFT PERFORMED RECOMMENDED PROCEDURES AND UPON INSPECTION OF THE SYSTEM IT WAS CONFIRMED THAT THE COUPLING HAD FAILED. HYDRAULIC PUMP, COUPLING, AND BEARING WERE REPLACED.