What was found
(CAN) THE AIRCRAFT WAS ON TAXI IN, FROM FLT 812, TO THE PARKING STAND IN VRA. THE GROUD HANDLING CREW ALERTED THE FLIGHT CREW THAT FUEL WAS LEAKING FROM THE BOTTOM OF THE NR 2 ENGINE PRIOR TO SHUTDOWN AND A PUDDLE OF FUEL HAD FORMED UNDER THE ENGINE. INVESTIGATION OF THE LEAK, DETERMINED THE LEAK WAS FROM THE DRAIN MAST ASSEMBLY, HPT ACC DRAIN PORT. THE HPTACC DRAIN LINE WAS REMOVED AT THE HPTACC AND CONFIRMED THE FUEL WAS LEAKING FROM THE ACTUATOR ASSEMBLY. THE HPT ACC ACTUATOR WAS REPLACED AND LEAK CHECK AND ENGINE RUN CARRIED OUT, SERVICEABLE.