As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING ODOR NOTED ON APPROACH. BURNING ODOR WENT AWAY WHEN TURNING AC COMPRESSOR TO OFF. TRANSFERRED TO DMI 21-1-1A AC COMPRESSOR INOP. R & R COMPRESSOR BELT IAW MM. OPS CHECK NORMAL NO DEFECTS NOTED. THIS ITEM IS BEING MONITORED. STANDARD INSP INTERVAL FOR THIS BELT IS 250 HOURS.