As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF DURING GEAR RETRACT, RT HYDRAULIC PRESSURE LOW LIGHT CAME ON, GEAR DOOR OPEN LIGHT CAME ON AND HYDRAULIC QUANTITY DROPPED TO ZERO. CREW DECLARED AN EMERGENCY AND RETURNED WITHOUT FURTHER INCIDENT. REPLACED RUDDER SHUTOFF VALVE O-RING AND PLUG AND SERVICED SYSTEM. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)