As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPORTED EXTREME HEAT COMING INTO AIRCRAFT ACCOMPANIED BY A BLUE HAZY TYPE SMOKE AND BURNING ODOR IN CABIN. AIR CONDITIONING SYSTEM WAS PREVIOUSLY MEL'D. MAINT FOUND THE AIR CYCLE MACHINE CIRCUIT BREAKER PULLED AND COLLARED. THE CIRCUIT BREAKER WAS RESET. THE BLEED AIR SYSTEM WAS TESTED AND THE SYSTEM FUNCTIONED NORMALLY.