What was found
(CAN) AFTER SELECTING FLAP 5 AND GEAR DOWN THE NR 2 HYD ISO VALVE AND ROLL SPOILER OTBD HYD CAUTION LIGHTS WERE ILLUMINATED. THE CREW PERFORM A NORMAL APPROACH AND LANDING, ALSO CONDUCTED A SLOW AND CONTROLLED TAXI BACK TO BAY DUE TO THE LOSS OF THE NOSE WHEEL STEERING. HYD LEAK TRACED NR 1 MLG FLEX HOSE ASSY FROM YOKE TO NACELLE, HOSE ASSY REPLACED, NR 2 HYD SYSTEM SERVICED. LANDING GEAR RETRACTION / EXTENSION SYS UNSERVICEABLE DUE REPLACED HYD LINE IN NR 1 NACELLE. A HYD SYSTEM BLEED WAS CARRIED OUT AND THE ACFT FLEW GEAR DOWN UNDER A SPECIAL FLIGHT PERMIT TO MAINTENANCE FACILITY TO HAVE EXTENSION AND RETRACTION CHECKS CARRIED OUT.