As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT ON DESCENT FROM 16,000 FT UNTIL 5,000 FT. HEAVY MUSTY DIRTY SOCK SMELL. PACK 2 WAS OFF, PACK 1/2 ON. PERFORMED PACK & DISTRIBUTION DUCT ODOR CLEANING PROCEDURE IAW AMM 21-53-00-7. R & R THE NR 1 & 3 PACK COALESCE SOCKS IAW AMM 21-54-03-2. AFTER ABOVE PROCEDURES NO ODOR FOUND DURING PACK 1 & 3 OPERATION. NO HISTORY LAST 30 DAYS.