As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED ODOR/FUMES FROM PREVIOUS WRITE UP RETURNED DURING FINAL DESCENT OUT OF ABOUT 12,000 FT. MAINTENANCE REPLACED THE LEFT HAND OZONE FILTER PER AMM 21-51-41 AND ACCOMPLISHED A DECONTAMINATION OF THE PACKS PER TASK CARD 26L00021013.