As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A CABIN ODOR. MAINTENANCE FOUND EVIDENCE OF OIL LEAK ON APU TURBINE NR 4 CAVITY VENT TUBES. REMOVED AND REPLACED PACKINGS ON APU TURBINE NR 4 CAVITY VENT TUBES. COMPLIED WITH DECONTAMINATION J/C'S 26L00021004 AND 26L00021002I, APU COMPRESSOR WASH J/C 26L31049009 AND APU WASH J/C 26C31049016.