As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING IDLE PERIODS DURING DESCENT PRONOUNCED SMELL OF OIL AND FUMES. MAINTENANCE FOUND OIL LEAKING FROM THE APU V BAND AND REPLACED THE APU PER TASK CARD 26L31049003, ACCOMPLISHED A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO LEAKS / ODORS NOTED.