What was found
AFTER TAKEOFF, LANDING GEAR FAILED TO RETRACT, RED WARNING UNSAFE GEAR LIGHT ILLUMINATED PFN COMMENCED CHECKLIST AND TROUBLESHOOTING. APPROXIMATELY 2 MINUTES LATER, NR 2 HYD SYSTEM CAUTION LIGHT ILLUMINATED. NR 2 HYD PRESSURE GAUGE TO LOW RED LINE. PNF COMPLETED UNSAFE GEAR CHECKLIST AND BEGAN HYD SYSTEM MALFUNCTION CHECKLIST. ONCE NR 2 HYD SYSTEM WAS SECURED, NR 2 HYD PRESSURE GAUGE INDICATED PRESSURE LEVEL IN LIMITS LOW END OF GREEN ARC AND LANDING GEAR COMPLETED CYCLE TO 3 DOWN AND LOCKED. AIRCRAFT DIVERTED, LANDING AND SHUTDOWN WERE UNEVENTFUL. POST FLIGHT INSPECTION REVEALED COMPLETE LOSS OF NR 2 HYDRAULIC FLUID FROM FORWARD LANDING GEAR BOX AREA. MAINTENANCE REPLACED RUPTURED HOSE.