As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ELECTRICAL BURNING ODOR DURING APPROACH, TURNED OFF RECIRCULATION FAN AND ODOR WENT AWAY. TURNED THE FAN ON, ON THE GROUND AND THE ODOR RETURNED. REMOVED AND REPLACED THE NR 1 RECIRCULATION FAN IAW AMM 21-22-10. OPS CHECKED GOOD, OK FOR SERVICE.