What was found
(CAN) A/C EXPERIENCED LOSS OF YELLOW HYDRAULIC SYS, ECAM WARNING - HYD RSVR LO/HYD SYS LO PR, APPROX 1(ONE) HR INTO FLT. FLT CREW SECURED SYS AS PER THE AFM&DIVERTED FLT TO MAN. UPON ARRIVAL IN MAN, MAINT FOUND FLUID DRIPPING FROM NR 2 ENGINE THRUST REVERSER PYLON DRAIN TUBE. THRUST REVERSER HYDRAULIC FILTER ASSY FOUND TO BE WET WITH HYDRAU LIC FLUID. FILTER ASSY DISASSEMBLED & FOUND O-RING FRETTED. O-RING REPLACED AS PER SB & YELLOW HYDRAULIC SYS CHECKED, YELLOW HYDRAULIC PUMP CASE DRAIN FILTER CHECKED NO ABNORMALITIES NOTED. THE SYS GROUND CHECKED SERVICEABLE.