As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT THE POWER BRAKE CIRCUIT BREAKER WOULD TRIP INTERMITTENTLY. THE MAINTENANCE BASE DETERMINED THAT THE POWER BRAKE CIRCUIT BREAKER WAS DEFECTIVE. THE CIRCUIT BREAKER WAS REMOVED AND REPLACED WITH A NEW BREAKER. OPERATIONAL CHECKS WERE SATISFACTORY, AND THE AIRCRAFT WAS RETURNED TO SERVICE.