What was found
DURING INITIAL CLIMB, AFTER TAKEOFF, CREW REPORTED LOSS OF A SYS HYD. CREW DECLARED AN EMERGENCY AND RETURNED TO THE DEPARTURE AIRPORT. THE ACFT LANDED SAFELY, DESPITE LOSS OF NORMAL BRAKE SYS. MX TECH FOUND NOSE GEAR CENTERING HOSE ASSY RUPTURED. THE LINE WAS REPLACED.