As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - CREW REPORTED SMOKE IN CABIN AFTER TAKEOFF. EMERGENCY DECLARED FLIGHT RETURNED LAS LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND EXCESSIVE RESIDUAL OIL FROM AUXILIARY POWER UNIT. CLEANED AREA AND DRAINED OIL. ACCOMPLISHED PACK BURNOUT. SYSTEM GROUND CHECK NORMAL OPERATION.