As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 636 SFO-BOS WITH GEAR EXTENSION AUTOBRAKE FAULT STATUS MSG INDICATED. AUTO AND NORMAL BRAKES INOP. RESET ANTISKID SWITCH OPS NORMAL. REMOVED AND REPLACED BRAKE SERVO VALVE 18GG PER AMM 32-42-48. OPS CHECK AND LEAK CHECK SATISFACTORY.