As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - A/C WAS LEAVING MHT WHEN SMOKE WAS DISCOVERED IN THE COCKPIT, CREW RETURNED TO MHT. A/C WAS FERRIED TO TYS FOR A NR 1 ENGINE CHANGE. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE AND OPS CHECK GOOD. RELEASED TO SERVICE. ALL WORK WAS ACCOMPLISHED IAW WITH THE AMM 72-00-00.