As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE APPEARED IN THE CABIN AND COCKPIT. FLIGHT MADE AN UNSCHEDULED LANDING AT ICT. EXTENSIVE CHECKS OF THE WATER SEPARATOR FILTERS, ENGINE END CAPS, ETC. FOUND NO CAUSE FOR THE SMOKE. THE AIRCRAFT OPERATED TO STL WHERE BOTH ENGINES WERE BORESCOPED PRECAUTIONARY. THE RT ENGINE HAD OIL IN THE EIGHTH STAGE SO THE ENGINE WAS REPLACED.