As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HAD DIRTY SOCK SMELL ON CLIMBOUT IN BACK OF CABIN. SHUT OFF #2 PACK OFF PER PROCEDURE & SMELL WENT AWAY. IT CAME BACK AS SOON AS WE DESCENDED INTO CLOUDS ON SHORT FINAL AROUND 5000-FOUND TO RESIDUAL FROM EARLIER EVENT. REPLACED FILTER IAW AMM 21-21-41. AFTER TROUBLESHOOTING IAW TSM 05-50-00-810-831-A.