As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, THE FLIGHT CREW SMELLED AN ELECTRICAL BURNING ODOR IN THE CABIN. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. DURING THE APPROACH CREW HAD DEPLOYED OXYGEN MASKS FOR NURSES/PATIENT ON BOARD ACFT. INVESTIGATION OF ACFT FOUND NO HOT SPOTS. IDENTIFIED CABIN BLOWER FAN AS FAILING. REMOVED FROM ACFT.