As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW ADVISED OVERHEAD MEMPHIS LOST YELLOW SYSTEM HYDRAULIC. ELECTED TO DIVERT TO DFW FOR REPAIRS. LANDED 6.8 OVERWEIGHT AT 149,000 LBS. *S/D* FOUND O-RING AT BOTTOM OF YELLOW PUMP PRESSURE LINE TORN. REPLACED O-RING AND SERVICED YELLOW SYSTEM TO 2SVC TASK.