As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT SMELLED ELECTRICAL SMOKE, F/O SAW SMOKE BY RT SEAT SIDEWALL. REPORTED ELECTRICAL ODOR AND HAZE IN AFT CABIN. DECLARED AN EMERGENCY. MAINTENANCE FOUND LT ACM SEIZED, REPLACED RECIRCULATING FAN FILTER, ACM, REHEATER AND LOW LIMIT VALVE. RAN ENG PERFORMED SMOKE ODOR CK IAW FIM 21-00-01. OP CKS GOOD.