What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO THE FLIGHT CREW REPORTING BRAKE SYSTEM FAULT (AALA202311309870) AND FLIGHT CONTROL SPOILER 3 FAULT (AALA202311304225) MESSAGES OCCURED DURING CLIMBOUT. THE AIRCRAFT LANDED SAFELY AT DFW AND TAXIED TO THE GATE. MAINTENANCE ACCOMPLISHED A SATISFACTORY GROUND SCAN OF BOTH BRAKE STEERING CONTROL UNITS ALONG WITH A TEST OF THE BRAKE PEDAL TRANSMITTER UNIT WITH NO FAULTS NOTED. MAINTENANCE WAS UNABLE TO DUPLICATE THE BRAKE SYSTEM 2 FAULT. MAINTENANCE FOUND THE FLIGHT CONTROL SPOILER 3 FAULT WAS DUE TO #1 SPOILER ELEVATOR COMPUTER FAILING AND REPLACED IT PER AMM 27-94-34. A SATISFACTORY OPERATIONAL CHECK OF THE SPOILERS WAS ACCOMPLISHED.