As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR---CO3208, CREW REPORTED DURING TAXI/GROUND HOLD THAT DC GENERATOR ENGINE NR 2 WAS INOPERATIVE (AIRCRAFT HAD SMOKE IN THE CABIN. MAINTENANCE REMOVED AND REPLACED THE NR 2 STARTER GENERATOR AND NR 2 GENERATOR CONTROL UNIT IAW ATR42 JIC 24-32-81. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.