What was found
THE AUTOPILOT FAILED IN FLIGHT NEAR THE DESTINATION AIRPORT. AFTER THE AUTOPILOT FAILURE, THE PILOT EXPERIENCED SMOKE IN THE COCKPIT. THE PILOT PULLED THE AUTOPILOT CIRCUIT BREAKER, RESULTING IN THE COCKPIT SMOKE DECREASING. THE LANDING WAS UNEVENTFUL AFTER DECLARING AN EMERGENCY. DURING SUBSEQUENT TROUBLESHOOTING BY THE MAINTENANCE TECHNICIAN, THE AUTOPILOT COMPUTER WAS VERIFIED AS THE SOURCE OF THE SMOKE BY VISUAL INSPECTION, HEAT DAMAGED CIRCUIT BOARD COMPONENTS WERE OBSERVED THROUGH THE COOLING OPENINGS ON THE AUTOPILOT CASE.