As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT DURING DESCENT, TURNED OFF THE NR 1 PACK. THE FUMES STOPPED. PERFORMED DECONTAMINATION OF THE NR 1 PACK IAW AMM 21-00-00. NO DEFECTS NOTED AFTER DECONTAMINATION. REMOVED AND REPLACED RECIRCULATION FILTERS IAW AMM 21-21-41. REMOVED AND REPLACED NR 1 OZONE CONVERTER IAW AMM 25-51-41.