What was found
MCI FLIGHT NR 2484 THE CREW REPORTED SMOKE IN THE CABIN SHORTLY AFTER TAKE OFF FROM MCI. THE ACFT RETURNED TO MCI AND LANDED WITHOUT INCIDENT. MX INSPECTED AND REPLACED THE NR 2 ENGINE. OPS CHECKS WERE GOOD. INVESTIGATION CLOSE-OUT FROM MANUFACTURER INDICATED THE NR 0 BEARING LINER SHIFTED. THIS ALLOWED OIL TO ESCAPE THE FAN BEARING HOUSING AND SUBSEQUENTLY GET INTO THE CORE FLOW OF THE ENGINE. THE PFI IS THEREFORE THE FAN BEARING HOUSING.