As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AT ABOUT 7000 FEET, SMOKE AND FUMES APPEARED IN THE CABIN AND THE AIRCRAFT RETURNED TO MSP WHERE AN UNEVENTFUL LANDING WAS MADE. NO FUEL WAS DUMPED. THE NR 3 ENGINE NR 3 BEARING COMPARTMENT SHOWED EVIDENCE OF DISTRESS AND BLACK OIL WAS FOUND. THE ENGINE WAS REPLACED.