As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAN - CREW REPORTED CENTER HYDRAULIC FLUID DECREASING IN FLIGHT. EMERGENCY DECLARED FLIGHT LANDED SAN WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED FLAP/SLAT SHUTOFF VALVE AND AIR DRIVEN HYDRAULIC PUMP THAT WERE LEAKING. SYSTEM GROUND CHECK NORMAL OPERATION.