As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI TO DEPARTURE THE CAPTAIN NOTICED THAT THE LEFT BRAKES WERE DRAGGING. THE AIRCRAFT TAXIED BACK TO THE RAMP. THE NR 2 BRAKE DISK WAS FOUND SEPARATED AND JAMBED. THE NR 2 BRAKE AND DEBOOSTER VALVE WERE REPLACED. OPERATIONALLY CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)