As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATL INFLIGHT - DURING CLIMB-OUT BETWEEN 4000 AND 10000 FEET, FLIGHT ATTENDANT REPORTED WHITE SMOKE IN CABIN. ACCOMPLISHED CABIN SMOKE AND FIRE CHECKLIST AND SMOKE BEGAN TO DISSIPATE. RETURNED TO ATL AND LANDED WITHOUT INCIDENT. ACCOMPLISHED BURN OUT OF HIGH PRESSURE PNEUMATIC DUCTING, AND REPLACED TAIL COMPARTMENT COALESCER BAGS. SYSTEM GROUND CHECKED NORMAL OPERATION.