As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIRTY SOCK ODOR ON DESCENT NO APU RUNNING. (PRETTY STRONG); ACCOMPLISHED CHAP. 5 TSM INSP. PER TSM 05-50-00-810-831-A. COS FOUND TO BE TYPE 3. R & R LH + RH OZONE FILTERS AS A PRECAUTION. PERFORMED A HIGH POWER RUN FOR THE ENGINE BLEED AIR TEST PER TSM 71-00-00-810-801-A. COULD NOT DUPLICATE THE ODOR. ACFT OK FOR SERVICE.