As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR CONDITIONING BLOWER FAN MOTOR FIELD WINDING SHORTED AND BURNED UNDER AIR CONDITIONER MODE OPERATION. AIRCRAFT WAS IN-FLIGHT AT THE TIME, AND SMOKE ENTERED THE CABIN THROUGH THE CABIN 'WEMAC' OUTLETS FOR A/C AIR. WHILE TOTAL TIME OF THIS COMPONENT IS UNKNOWN, THE LENGTH OF THE ARMATURE BRUSHES WOULD INDICATE THIS ITEM'S FAILURE WAS IMMINENT.