As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED AFTER TAKEOFF, AFT CABIN FILLED WITH SMOKE AND OILY FUMES. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RECIRCULATION FAN. SYSTEM GROUND CHECK NORMAL OPERATION.