As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI-OUT, THE "ANTI-SKID INOP" LIGHT ILLUMINATED AND THE "FAIL WARN AND PARK BRAKE" CIRCUIT BREAKER POPPED. RETURNED TO RAMP. MX REMOVED AND REPLACED THE PARKING BRAKE SHUT OFF VALVE IAW MM 32-44-21. OPS AND LEAK CHECK OK. ACFT RETURNED TO SERVICE.