As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE OBSERVED COMING FROM FREON AIR VENTILATION DUCT ON UNDERSIDE OF AIRCRAFT. BURNING ODOR LIKE INSULATION THROUGHOUT AIRCRAFT. SUSPECT WINDINGS ON MOTOR FOR FREON AIR FAILED. NO OTHER DAMAGE NOTED AFTER INSPECTION. MX DETERMINED TO BE FREON MOTOR. REMOVED AND INSTALLED ELECTRIC DRIVE MOTOR AND RECEIVER/DRYER IAW CMM 21-00-07. LEAK CHECK GOOD. SERVICED SYSTEM IAW MM 12-19-02.