What was found
AIR TURNBACK. FLIGHT CREW REPORTED AILERON SERVO ECAM ON CLIMB. NORMAL LAW WAS LOST. RETURNED TO DEN AND PERFORMED AN OVERWEIGHT LANDING WITHOUT INCIDENT. REPLACED ELAC NR 2 PER TSM 27-93-00-810-855. OPS CHECKED GOOD PER AMM 27-93-34. PERFORMED AFS LAND TEST PER AMM 22-97-00-710-001 AND TESTED OKAY. CAT IIIB STATUS RETAINED. PERFORMED OVERWEIGHT LANDING TASK CARD MP05510-4, NO DEFECTS FOUND. PERFORMED DFDR DOWNLOAD PER AMM 31-33-00-710-009. AIRCRAFT RETURNED TO SERVICE.