As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DECENT INTO DFW EN ROUTE FROM PHX (A) SYSTEM HYDRAULIC QUANTITY INDICATOR BEGAN SHOWING LOSS OF FLUID. FLUID LEVEL DROPPED TO APPROX .7500 OF A GAL REMAINING. EMERGENCY EQUIPMENT CALLED OUT AS A PRECAUTION. MAINTENANCE FOUND THE NOSE LANDING GEAR ACTUATOR (UP-LINE) LEAKING, REPLACED HYDRAULIC LINE IAW BMM 20-10-52, OPERATIONAL AND LEAK CHECK WAS GOOD.