What was found
DURING CLIMBOUT AND GEAR RETRACTION, ACFT LOST GREEN SYS FLUID. LANDING GEAR WAS EXTENDED BY THE NORMAL SYS BUT GEAR DOORS REMAINED OPEN. DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE. LANDED AND TAXIED BACK TO THE GATE WITHOUT INCIDENT. DURING INSPECTION, THE RT MAIN GEAR SIDE STAY ACTUATOR SUPPLY LINE SWIVEL WAS FOUND BROKEN. THE LINE WAS REPALCED, THE GREEN HYD SYS WAS SERVICE AND ALL REQUIRED INSPECTIONS WERE ACCOMPLISHED. THE ACFT DEPARTED WITHOUT FURTHER INCIDENT.