As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW/MQT - FLT 3187 - IN CRUISE FLIGHT TO MQT, THE CREW NOTED A SLOW LEAK DOWN OF THE NR 1 HYDRAULIC SYSTEM. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED A CRACKED FLARE ON THE HYDRAULIC LINE FROM THE LEFT MANIFOLD TO THE ANTI-SKID CONTROL VALVE. SYSTEM OPERATED SATISFACTORILY. (X)