As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 563 - EWR-DFW - AFTER LANDING AT DFW ON ROLL OUT THE LEFT BRAKE WOULD NOT APPLY. THE BRAKE OPERATED NORMALLY WITH THE ANTI-SKID OFF. THE AIRCRAFT TAXIED TO PARKING WITHOUT INCIDENT. CLEANED CANNON PLUG ON BOTH DUAL SERVO VALVES IN LEFT WHEEL WELL. OPS CHECK ON GROUND SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)