As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LHR T101/10 WHILE TAXIING NUMBER 10 BRAKE LOCKED UP. AIRCRAFT WAS TOWED TO GATE AFTER MAINTENANCE RELEASED LOCK. REPLACED NUMBER 10 MAIN WHEEL AND BRAKE ASSEMBLIES. ACCOMPLISHED AXLE INSPECTION, NO DAMAGE. FOUND BRAKE QUICK RELEASE COUPLING LEAKING. REPLACED BRAKE QUICK RELEASE COUPLING, SYSTEM GROUND CHECKED NORMAL OPERATION.