As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3509 THE CAPTAIN WAS ON THE RUNWAY HOLDING AND ENGAGED THE EMERGENCY BRAKE AND DID NOT GET THE "BRAKE ON" LIGHT. THE CAPTAIN ELECTED TO RETURN TO THE GATE TO GET MAINTENANCE. REMOVED AND REPLACED LIGHT INDICATOR SWITCH IAW EMB145 AMM 20-13-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.