What was found
FUME EVENT (DIRTY SOCK SMELL) ON FINAL APPROACH. SMELL IN CABIN, PACK #2 SELECTED OFF, CROSSBLEED CLOSED. DESCRIPTION OF FUME/ODOR: PERSISTENT, DIRTY SOCKS/MUSTY DRY/MOLDY SMELL. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FWD CABIN AND AFT CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-FOLLOW TSM 05-50-00-810-831-A AND PERF ECS DECON AS PER AMM 21-00-00. ALSO USED AEROTRACER TO ID FUMES WITH NO RESULTS OF CONTAMINANTS AT THE TIME WITH BOTH ENGS RUNNING AT IDLE IAW AMM 71-00-00. A/C IS OK TO CONT SERV.