As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS REPORTED DIRTY SAK SMELL DURING DESCENT THROUG FL180 IDLE THRUST-PERFORMED INSPECTION OF PACK NR 1 IAW TSM 05-50-00-810-831A. FOUND NO EVIDENCE OF OIL CONTAMINANTION. PERFORMED ENG RUN TO DUPLICATE CABIN ODOR IAW AMM 71-00-00. COULD NOT DUPLICATE. A/C OK FOR CONTINUE SVC.