As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, CREW DETECTED A BURNING ODOR AND LOSS OF AIR CONDITIONING. INSPECTED AND DID NOT FIND EVIDENSE OF DEFECTS. ACFT RETURNED TO BASE. DURING FLIGHT TO BASE BURNING ODOR AGAIN. UPON LANDING AT BASE AIR CONDITIONER BELT WAS BURNED IN HALF. COMPRESSOR SEIZED UP. THE BELT WAS REMOVED AND THE SYSTEM DEFERRED UNTIL THE COMPRESSOR ARRIVES FROM THE PARTS VENDOR. THIS ACFT HAS BEEN RETURNED TO SERVICE WITH THE AIR CONDITIONING SYS MEL'D.