As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXTREME ODOR OF JET ENGINE EXHAUST IN THE COCKPIT AND UPPER DECK DURING DESCENT. PERFORMED FIM 21-00, TASK 810. FOUND RT WING GEAR DOOR RETURN HYD FITTING LEAKING. PERFORMED APU BLEED FOR OIL CONTAMINATION. PERFORMED ENGINE BLEED AIR OIL CONTAMINATION CHECK, OK. NO OCCURRENCE OF FUMES.