As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE STARTED TO SPOOL WITH GPU CONNECTED TO AIRCRAFT. NR 2 STARTER/GENERATOR STARTED TO SMOKE. THE NR 2 PROP WAS SPINNING AT 200 RPM WHEN THE CREW POWERED DOWN. THE FIRE DEPARTMENT WAS CALLED TO THE AIRCRAFT, NO FIRE WAS DETECTED. FOUND THE START CONTACTOR STUCK, REMOVED AND REPLACED THE STARTER/GENERATOR AND START CONTACTOR. OPERATIONAL CHECK GOOD.