As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - FLT 1248 - EN ROUTE DEN-DFW, SHORTLY AFTER TAKEOFF DETECTED SMOKE IN THE CABIN. RETURNED DEN AND LANDED WITHOUT INCIDENT. REPLACED RIGHT AND LEFT SIDE RECIRCULATING FAN FILTERS PER THE MM. NO FURTHER SMOKE NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)