As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED AN AVIONICS VENT FAN FAULT. AND ELECTRICAL FUMES IN THE COCKPIT DURING DECENT. THE AIRCRAFT LANDED AT CLT SAFELY AND FIRE TRUCKS FOLLOWED THE AIRCRAFT TO THE GATE. MAINTENANCE DETERMINED THAT THE AVIONICS EXTRACT FAN HAD FAILED AND SEIZED. THE AVIONICS EXTRACT FAN 18HQ AND CONTACTOR 7HQ WERE REPLACED PER AMM 21-26-51. (SEE AALA201701029002)