What was found
AT TAKEOFF, HELICOPTER EXPERIENCED A NR 2 HYD SYS CAUTION LIGHT ILLUMINATION AND THE NR 2 HYD PRESSURE GAUGE NEEDLE INDICATED ZERO PRESSURE. THE HELICOPTER LANDED WITHOUT INCIDENT ON THE NR 1 HYD SYS. UPON INSPECTION, THE FWD MAIN ROTOR SERVO HYD PRESSURE PORT FITTING ON THE NR 1 SYS SIDE HAD BROKEN OFF COMPLETELY AT THE SERVO MAIN HSG. NO CAUSE COULD BE DETERMINED FOR THE FAILURE AT THIS TIME. THE SERVO WAS REMOVED AND SENT FOR EVALUTION.