What was found
DIRTY SOCK SMELL DESCENDING THROUGH 7000 ISOLATED PACK 1 ODOE DISSIPATED. DESCRIPTION OF ODOR/FUMES: PERSISTENT, DIRTY SOCKS SMELL. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-TROUBLESHOT PER TSM 05-50-00-810-831-A FOUND TO BE TYPE 5 EVENT PACK 1 AT FAULT. PERFORMED LEVEL A DECONTAMINATION OF ECS PER AMM 21-00-00. SEE ITEM 2 FOR DEFERRAL