As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXPERIENCED THE NR 1 BRAKE LOCKING UP DURING TAXI OUT TO THE RUNWAY. ACFT RETURNED TO BLOCKS. MAINTENANCE FOUND THE NR 1 BRAKE ASSY AND BEARING DAMAGE. REPLACED NR 1 BRAKE ASSEMBLY AND NR 1 TIRE ASSY. INSPECTED AXLE WITH NO DAMAGE FOUND.