As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO SAN, AS THE LANDING GEAR WAS EXTENDED THE A-SYSTEM HYDRAULIC QUANTITY WENT TO ZERO. THE AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED LEFT HYDRAULIC FLOW REGULATOR VALVE. INSPECTED A-SYSTEM HYDRAULIC PUMPS AND FILTERS. SERVICED HYDRAULIC SYSTEM. OPS CHECK GOOD. (M)