What was found
GREEN/BLUE HYD OVHT MSG, RTFL. ACP WALK AROUND, FOUND NO SIGNS OF HYDRAULIC OR OIL LEAKS. HYDRAULIC AND OIL QTY INDICATIONS ON ECAM CHECK NORMAL. FAULTS CLEARED. NO ECAM, STATUS OR MAINT MSGS DISPLAYED. RAN HYD SYS FOR 1 HR & CYC FLIGHT CONTROLS, NO MSGS. HYD QTY'S NORMAL. REPLACED OIL SCAV FILTER ELEMENT AND PACKING. MASTER C-D CLEAN & FILTER CLEAN. SUSPECT FAULT RELATED TO SDAC 1 FAULTS.