As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA REPORTS STRONG OILY ODOR IN CABIN WITH PACKS RUNNING OFF THE ENGINES. SMELL DISIPATED WHEN PACK 2 TURNED OFF.-ISOLATED PACKS ON APU, ENG 1 AND ENG 2 BLEED SYS IAW TSM 05-50-00. ODOR NOT DUPLICATED, NOTHING DETECTED ON AEROTRACER. AC UNDERSIDE CLEAN. AS OK FOR SVC.