As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT TO ARRIVAL "DIRTY SOCK" SMELL FROM AIR IN THE A/C. RAN LT & RT PACK 1 AT A TIME FOUND FAINT SMELL ON RT PACK. FOUND RT ACM HARD TO TURN. REPLACED RT PACK ACM OZONE CONVERTER AND LT AND RT RECIRCULATION FILTERS. RAN RT PACK LEAK CHECKED GOOD. NO SMELLS OF DIRTY SOCK IN CABIN OR COCKPIT. REF AMM 05 60 00 280 801C1 21 00 01 100 801.