As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATL - FLT 406 - RIGHT PACK PUTS SMOKE IN THE CABIN. RIGHT PACK DEFERRED PER MEL 21-1, CI NR M208057 ASSIGNED PER MAINTENANCE CONTROLLER. PERFORMED SPECIAL PROCEDURES 21-1 AND 21-2. PLACARDS INSTALLED. REPLACED RT AIR CYCLE MACHINE PER MM 21-51-11, M208057 CLEARED. (M)