As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, BRAKES WERE INEFFECTIVE AT TAXI SPEEDS. TOOK FULL FORCE ON BRAKE PEDALS FOR BRAKES TO WORK, THEN BRAKES WOULD IMMEDIATELY GRAB. DUE TO PREVIOUS HISTORY OF BRAKE CHANGE, R & R MAIN BRAKE CONTROL VALVE IAW AMM TASKS 32-42-06-000-801 AND 32-42-06-400-801. COMPLIED WITH TAXI CHECK OF ACFT AND BRAKING SYS. ACFT STOPS WITH NORMAL PRESSURE ON BRAKE PEDALS. ALL CHECKS ARE GOOD. NO LEAKS NOTED. RETURNED TO SERVICE.