What was found
FUME EVENT IN COCKPIT DESCENDING THROUGH 10,000 DIRTY SOCK SMELL DISIPATED WITH PACK 1 TURNED OFF. -ACCOMPLISHED TSM 05-50-00-810-831-A INSPECTED APU COMPARTMENT FOUND NO EVIDENCE OF OIL. ISLOATED BOTH PACKS AND COMFIRED PACK 1 TOBE THE SOURCE. REF LP 3627290-2 FOR PACK 1 PLACED ON MEL. DESCRIPTION OF ODOR/FUMES: DIRTY SOCKS, PERSISTENT. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.