As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ARRIVING TO A/C OIL FUME SMELL NOTED IN FLIGHT DECK AND CABIN ON APU BLEED WITH BOTH PACKS RUNNING. RAN PACKS IAW AMM 21-51-00 DETERMINED OZONE/HUMIDITY SMELL FROM PACK 1. OZONE/HUMIDITY ODOR IN FLIGHT DECK WITH PACK 1 SELECTED. RAN PACK 1 ON APU BLEED FOR 20 MINUTES. CND. NO UNUSUAL ODORS PRESENT. ACFT OK FOR SERVICE AT THIS TIME. CLEAR MEL 21-15-2.