As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE MAINTENANCE FOUND THE NL HYDRAULIC SWIVEL VALVE ANTI-ROTATION PIN SHEARED. THE SWIVEL VALVE P/N 53050-7, S/N MAL-0079, WAS REMOVED FROM AIRCRAFT 10008, IT WOULD APPEAR THAT THE VALVE WOULD HAVE SEIZED RESULTING IN THE LT ANTI-ROTATION PIN P/N 52119-1 SHEARING ALLOWING THE BOTTOM PART OF THE SWIVEL VALVE TO ROTATE BACK AND FORTH FOLLOWING THE MOVEMENT OF THE ACTUATOR, SUBSEQUENTLY BREAKING THE HYDRAULIC LINE P/N 52404-3.