As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DECENT AT 3000FT ON APPROACH FA REPORT A FUME EVENT BOTH FRON CREW MEMBERS ALSO SMELLED THE EVENT -PERFORMED TSM 05-50-00-810-831-A AND ISOLATED ODOR TO PACK 1. PACK 2 OPS NORMAL WITHOUT ODOR. SEE L/P 3339741-2 FOR PACK 1 DEFERRAL. A/C OK FOR SERVICE.