As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - LOSS OF GREEN SYSTEM HYDRAULIC PRESSURE REPORTED AFTER TAKEOFF. CREW DECLARED AN EMERGENCY AND RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE FOUND HYDRAULIC LINE ON NOSE GEAR ACTUATOR LEAKING. REPLACED HYDRAULIC LINE. HYDRAULIC SYSTEM OPERATIONAL CHECK AND LEAK CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE. (X)