As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ODOR DETECTED IN FLIGHT DECK AND MID AND AFT CABIN. OCCURRED AT 12,000 FT ON DESCENT.-REF. TSM 05-50-00-810-831-A RAN ENGINES 1 AND 2 IAW AMM 71-00-00. DURING ENGINE RUN PERFORMED AMM 21-00-00-615-802-A. PER TESTS FOUND PACK 1 TO BE THE SOURCE OF FUME EVENT. REF. LOGPAGE 3383554-2 FOR CORRECTIVE ACTION.