As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, AN ELECTRICAL BURNING ODOR WAS NOTICED IN THE COCKPIT FOLLOWED BY VENT BLOWER FAULT MESSAGE. COMPLIED WITH COM PROCEDURES, DECLARED AN EMERGENCY, AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE AVIONICS VENTILATION INLET BLOWER FAN AND SYSTEM FILTER. OPERATIONAL CHECK OK.