As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT# 3581 BUF-BDL. CREW REPORTED FIRE AND SMOKE FROM FLIGHT TAXI SWITCH. MAINTENANCE FOUND AUTOPILOT DISENGAGE CIRCUIT CARD BURNT DUE TO FAULTY RESISTOR. AUTOPILOT DISCONNECT CIRCUIT BOARD REPLACED. OPERATIONAL CHECK GOOD. WIRING IN SURROUNDING AREA INSPECTED. NO DEFECTS FOUND. AIRCRAFT RETURNED TO SERVICE.