As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MEX INFLIGHT - FLIGHT ATTENDANTS REPORTED SMOKE IN CABIN AFTER TAKEOFF. RETURNED TO MEX AND LANDED WITHOUT INCIDENT. ACCOMPLISHED BURN OUT OF HIGH PRESSURE PNEUMATIC DUCTING AND REPLACED TAIL COMPARTMENT WATER SEPARATOR BAGS. SYSTEM GROUND CHECKED NORMAL OPERATION.