As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO THE FLIGHT CREW REPORTING THE LOSS OF GREEN HYDRAULIC PRESSURE IN FLIGHT FOLLOWED BY YELLOW HYDRAULIC SYSTEM OVERHEAT. THE AIRCRAFT LANDED SAFELY AT DFW AND WAS TOWED TO THE GATE. MAINTENANCE FOUND THE RT MLG DOOR BYPASS VALVE 2518GM LEAKING HYD FLUID AND REPLACED IT PER AMM 32-31-13.