What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS WHILE DESCENDING ON THE ARRIVAL APPROACHING 10000FT-CLEARED TO 4000- L NAV, V NAV ENGAGES THEN CLEARANCE TO DESCEND TO 10-000 170 KNOTS SELECTED LEVEL CHANGE AND CONFIGURED AIRCRAFT. THRUST LEVERS WENT UNCOMMANDED INTO TOGA, AUTO PILOT KICKED OFF. MODE CONTROL PANEL BECAME UNRESPONSIVE NO FD ON COPILOTS SIDE. TRIED RECYCLING AUTOPILOT/SWITCH AUTOPILOT NO RESPONSE, TRIED RECYCLING FD NO RESPONSE TRIED A/T RECYCLE AUTOTHOTTLES KEPT TRYING TO TOGA, AIRSPEED AND ALTITUDE ON MC UNRESPONSIVE WINDOWS WERE BLANK. MAINTENANCE REMOVED AND REPLACED MCP PANEL IAW AMM. 22-11-34 AND FCC A COMPUTER IAW AMM. 22-11-33. OPS. CHECKED GOOD. NO FAULTS NOTED. (SEE SDR # AALA201912229010)