As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THE MAIN BRAKES WERE LESS EFFECTIVE THAN NORMAL, ALMOST FEELS LIKE THEY WERE OVERHEATED AND GLAZED ON THE DISCS. MX REMOVED AND REPLACED THE OTBD BRAKE CONTROL VALVE, OPS CHECKED GOOD. ACFT WAS APPROVED FOR RETURN TO SERVICE.