As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB FROM KMCC, THE CREW NOTICED A LOSS OF HYDRAULIC QUANTITY TO THE FIVE GALLON LEVEL. THE CREW RETURNED TO KMCC AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE HYDRAULIC SYSTEM AND FOUND THE RIGHT MAIN LANDING GEAR ACTUATING CYLINDER, UPPER LINE ELBOW BROKEN. MAINTENANCE REPLACED THE RIGHT MAIN LANDING GEAR ACTUATING CYLINDER, SERVICED THE HYDRAULIC SYSTEM. THE OPERATIONAL CHECK WAS GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.