As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING AND DURING ROLLOUT THE PILOT REPORTED THAT THE BRAKES HAD FAILED. EMERGENCY BRAKING WAS SELECTED AND BRAKING POWER WAS RESTORED. POST LANDING OPS CHECK OF THE NR 1 HYDRAULIC PUMP REVEALED THAT THE PUMP MOTOR WAS SPINNING BUT THE PUMP WOULD NOT PRODUCE ANY PRESSURE. WHEN NR 2 PUMP WAS SELECTED ON THE PRESSURE WAS RESTORED AND THE BRAKES WORKED NORMALLY.