As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT ON DESCENT OUT OF ABOUT 12500 MSL. DETECTED CHEMICAL ODOR PACK 1 TURNED OFF ODOR DISSIPATED WITHIN SEVERAL MINUTES. NO OTHER CREW MEMBERS REPORTED ANY TYPE OF ODOR IN AIRPLANE CABIN.-COMPLIED WITH TSM 05-50-00-810-831-A FOUND PACK 1 TO BE CAUSE OF ODOR . NO EVIDENCE OF ELECTRICAL ODOR SEE L/P 3446609-1 FOR PACK DEFERAL