What was found
(CAN) DURING THE CLIMB AT 6000 FT, THE NR 2 ISOLATION CAUTION LIGHT CAME ON AND THE CREW NOTICED THE NR 2 HYDRAULIC QTY APPROACHING ZERO. THE CREW CARRIED OUT AN ALTERNATE GEAR EXTENSION AND HAD AN UNEVENTFUL LANDING. MAINTENANCE FOUND THE RT MLG RETRACTION ACTUATOR FLEX LINE FOR THE RETRACT SIDE RUPTURED AND LEAKING. THE FLEX LINE WAS REPLACED AND HYDRAULIC SYS SERVICED AND GEAR SWINGS CARRIED OUT. HYDRAULIC FLEX LINE PN 171K0056CR0220, AIPC 32-30-00, FIG 15-160.