As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - AIRCRAFT 170 WAS REPORTING TO ATL WHEN CREW SMELLED AND SAW SMOKE IN THE CABIN. ACFT RETURNED BACK TO TYS WHERE MAINTENANCE PERFORMED A BOROSCOPE INSPECTION FOR POSSIBLE OIL LEAKS AND NONE FOUND, WORKED THRU THE FIM AND DETERMINED TO CHANGE THE ENGINE ON THE LEFT SIDE. A/C IN THE PROCESS OF REMOVED AND REPLACED THE ENGINE.