As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: IN CRUISE HYDRAULIC QUANTITY A CONTINUED TO FALL. LOWEST LEVEL WAS 60%. FLIGHT RETURNED TO DFW, LANDING SAFELY. SERVICED HYDRAULIC SYSTEM A TO 93% PER AMM 12-12-00. RAN ELECTRIC AND ENGINE DRIVEN PUMPS, OPERATED FLIGHT CONTROLS AND FLAPS. PERFORMED GENERAL VISUAL INSPECTION AND FOUND NO LEAKS.