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 INTO DFW DUE TO THE FLIGHT CREW REPORTING A YELLOW HYDRAULIC SYSTEM LOW PRESSURE INDICATION FOLLOWED BY A YELLOW HYDRAULIC SYSTEM LOW QUANITY ECAM WARNING 5 MINUTES LATER WHILE IN FLIGHT. THE AIRCRAFT LANDED SAFLEY AT DFW AND WAS TOWED TO THE GATE. MAINTENANCE FOUND A HOLE IN THE MIDDLE HYDRAULIC PRESSURE LINE IN THE #2 PYLON AND REPLACED IT PER AMM 29-13-49. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.