As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE FLIGHT CREW REPORTED THE SMOKE JUST PRIOR TO LANDING, SMOKE ODOR DETECTED, WHEN THE AIR CONDITIONING PACKS WERE TRANSFERRED FROM THE ENGINE TO THE APU PROCEEDED TO DESTINATION AIRPORT (CVG) DECLARED EMERGENCY. THE APU WAS REPLACED.