As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2685 MKE-EWR AC N13955 SPOILERS DEPLOYING DURING TAXI WITH ASSOCIATED LOUD BANGING COMING FROM BELOW THE COCKPIT. RETURNED TO BLOCK AT EWR. EWR MAINTENANCE REMOVED AND REPLACED SPOILER CONTROL UNIT IAW EMB-145 AMM 27-63-02. OPERATIONAL CHECK GOOD. ALSO, PERFORMED AIRCRAFT TAXI IAW AMM 9-20-00. NO FAULTS NOTED, OPERATIONAL CHECK GOOD. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.