As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED LOW YELLOW SYSTEM HYDRAULIC FLUID QUANTITY. DURING THE SUBSEQUENT MAINTENANCE INVESTIGATION FOR THIS DEFECT, THE RT YAW DAMPER SERVO WAS FOUND TO HAVE TWO OF THE THREE END PLATE RETENTION SCREWS SHEARED CAUSING A YELLOW HYDRAULIC FLUID LEAK.