As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCE - SMOKE REPORTED IN CABIN ON APPROACH TO STATION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE DETERMINED FREON SYSTEM TO BE SOURCE OF SMOKE. DEFERRED FREON UNIT PER MEL 21-13. AIRCRAFT RETURN TO SERVICE. MAINTENANCE SUBSEQUENTLY CLEARED BY REPLACING EVAPORATOR FAN. OPERATIONAL CHECKS SATISFACTORY. (M)