What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO DEN DUE TO THE FLIGHT CREW REPORTING MULTIPLE FAILURE MESSAGES FOR AUTO THRUST, AUTOPILOT 1 AND 2, FMGC 1 AND 2 BEING FROZEN. THE AIRCRAFT WAS OVERWEIGHT AND LANDED SAFELY AT DEN. WHILE TAXING THE #1 AND #2 MAIN TIRES DEFLATED DUE TO THE FUSE PLUGS BEING MELTED DUIRNG THE EMERGENCY BRAKING UPON LANDING. PASSENGER WERE DEPLANED ON THE TAXIWAY AND BUSED TO THE GATE. MAINTENANCE REPLACED FMGC 1 (AALA202507074158) AND 2 (AALA202507070181) PER AMM 22-83-34 DUE BOTH UNITS BEING FROZEN. THE REPLACEMENT OF BOTH FMGC UNITS WERE DETERMINED TO BE THE CAUSE OF THE FAILURE MESSAGES FOR THE AUTOPILOT 1 AND 2, AS WELL AS THE AUTOHRUST. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.