As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 1326 - EN ROUTE ORD-TPA - SHORTLY AFTER TAKEOFF, CABIN FILLED WITH SMOKE. RETURNED ORD AND LANDED WITHOUT INCIDENT. REPLACED COALESCER BAGS. ACCOMPLISHED PACK BURNOUT PER MAINTENANCE MANUAL. NO SMOKE OR ODOR NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)