As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OILY SMELL IN COCKPIT AT 5000 FEET ON APPROACH. TURNED OF CROSSBLEED AND PACK 1 AND SMELL BEGAN TO DISSIPATE. ODOR WAS ALSO DETECTED IN FOWARD CABIN.-PERFORMED IDENTIFICATION OF CABIN ODORS OR SMOKE IAW TSM 05-50-00-810-831-A NO DEFECT NOTED.