As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT A GEEN HYDRAULIC SYSTEM FAILURE IN FLIGHT. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE LEFT HAND HOSE ON THE NORMAL BRAKE RETURN CHECK VALVE CRACKED. REPLACED HOSE, SERVICED GREEN HYDRAULIC SYTEM AND ACCOMPLISHED A SATISFACTORY LEAK AND OPERATIONAL CHECK PER AMM 12-12-00 AND 32-42-77-400.