As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT BURNING SMELL AND VISIBLE SMOKE IN COCKPIT AND CABIN. LT RECIRC FAN INOP, LIGHT NOTED. LT RECIRC FAN TURNED OFF CB PULLED. SMOKE DISSIPATED RAPIDLY. VERIFIED LT RECIRC FAN FAILURE AND SOURCE OF SMOKE. C/B'S OPENED AND COLLARED. FWD LT RECIRC FAN TO MCO PLACARD PER MEL 21-25-01A.