As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD UNDER AMBER ALERT DUE TO GREEN HYDRAULIC SYSTEM FAILURE. FOUND CUT SEAL ON HYDRAULIC LINE. REPLACED SEAL, FOUND GREEN RESERVOIR WITH THREE GALLONS OF HYD FLUID. RESET MANUAL GEAR EXTENSION. SERVICED SYSTEM TO FULL. RAN ALL HYDRAULIC PUMPS, NO LEAKS FOUND.