As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAD A LINGERING OIL ODOR. NOTICED ON GROUND. CAME BAC K IN DESCENT. WORKING THROUGH TSM 71-00-00-810-801-A, FOUND NR 2 ENG DE OILER OVERBOARD VENT HAVING EXCESSIVE OIL LEAKAGE. REF LP 7722927, SUBSEQUENT LEAK CHECK. OIL ODOR NOT ABLE TO BE DUPLICATED AT THIS TIME.