As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESENT AT IDLE, PASSING ABOUT 14,000' AN ODOR OF WET SOCKS ENTERED THE COCKPIT & FORWARD CABIN. PACK 1 WAS TURNED OFF & THE ODOR WAS ELIMINATED IMMEDIATELY. -R/R RECIRCULATION FILTERS 4012HM + 4013HM IAW AMM 21-21-41 AND TSM 05-50-00-810-831-A FOUND PACK 1 TO BE THE SOURCE. PERFORMED ENG RUN IAW AMM 71-00-00. SMELL RETURNED. REF LP 3007977-2 FOR DEFERRAL