As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAINT SMELL OF "SMELLY SOCKS" ON FINAL DECENT, MOST PREVELENT LEVELING AT 4000' THROUGH FINAL APPCH. COCKPIT NOTICED ONLY -ISOLATED TO PACK NR 1 PER TSM 05-50-00 PERFORMED PACK BURNOUT PROCEDURE IAW AMM 21-00-00-615 R&R RECIRCULATION FILTERS IAW AMM 21-21-41 AS PRECUTION NO FURTHER SMELLS AT THIS TIME.