As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, ABOVE 18000, FLIGHT ATTENDANT REPORTED STRONG BURNING ODOR AND SMOKE COMING FROM VENTS, SPECIFICALLY IN BACK OF CABIN. CREW REPORTED INCREASING PACK CABIN TEMPERATURE SEEMED TO DECREASE ODOR. MAINTENANCE TROUBLESHOT PER FIM. FOUND COALESCER BAGS VERY DIRTY. PERFORMED DUCT BURNOUT PER AMM. REPLACED COALESCER BAGS. ALL CHECKED GOOD.