What was found
FLIGHT 6097, CVG TO MKE, DURING CLIMB THE FLIGHT CREW RECEIVED A LAV SMOKE ALARM AND EICAS INDICATION. THE FLIGHT ATTENDANT ALSO CALLED THE COCKPIT AND REPORTED SMOKE IN THE CABIN. THE ACFT RETURNED TO CVG. DURING DESCENT, THE FLIGHT ATTENDANT REPORTED THAT THE SMOKE HAD CLEARED AND THE ACFT LANDED WITHOUT INCIDENT. MAINTENANCE RAN THE ENGINES AND FOUND E2 TO BE PRODUCING A FAINT OILY ODOR AT 50 PERCENT N2. THE ZERO CARBON SEAL AND AFT TURBINE SHOWED NO SIGNS OF OIL POOLING. THE ACFT WAS THEN FERRIED TO CMH WITH THE BLEEDS SECURED CLOSED. IN CMH, THE NR 2 ENGINE WAS REPLACED WITH NO FURTHER DEFECTS NOTED.