As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, LEFT HYDRAULIC SYSTEM LOST FLUID SUPPLY. ALTERNATE SYSTEMS WERE USED, AIRCRAFT LANDED IN SFO WITHOUT INCIDENT. MAINTENANCE FOUND THE ENGINE DRIVEN PUMP LINE DAMAGED. THE ENGINE DRIVEN PUMP, LINE AND FILTERS WERE REPLACED. RUN-UP, LEAK CHECK AND FUNCTIONAL TEST WERE SATISFACTORY.