What was found
AIRCRAFT GROUNDED- ON ARRIVAL, BOTH AUTOPILOTS FAILED, FLIGHT DIRECTORS FAILED, AND AUTOTHROTTLES WENT TO GO-AROUND. NO ANNUNCIATORS CAME ON, PRESSURIZATION SWITCHED TO ALTERNATE. CREW REPORTED WHEN FLIGHT DIRECTORS CYCLED, ALL RETURNED TO NORMAL. ACCOMPLISHED FIM FOR SMYD (STALL MANAGEMENT YAW DAMPER) 27-32-00, DFCS (DIGITAL FLIGHT CONTROL SYSTEM) 22-11-00, DCPC (DIGITAL CABIN PRESSURE CONTROLLER) 21-31-00. INBOUND FAULTS WERE INTERMITTENT, NO CURRENT FAULTS. DUE TO HISTORY REPLACED DFCS (DIGITAL FLIGHT CONTROL SYSTEM) MODE CONTROL PANEL (AALA202009089022), PER AMM 22-11-34, AND RIGHT AIR DATA INTERTIAL REFERENCE UNIT (AALA20200909014), PER AMM 34-21-01. ALL TESTS PASSED, OKAY FOR CONTINUED SERVICE.