As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DESCENT FROM ALTITUDE AND LEVELING BELOW 1500 FT, A FOUL ODOR IS EMITTED FROM THE VENT SYS. R & R APU DUE TO OIL FOUND IN INLET IAW ACFT MM 49-10-01-900-802. COMPLIED WITH OPS AND LEAK CHECK OF APU. NO DEFECTS NOTED REF MM 49-10-01-900-802.