What was found
FUME EVENT - OBSERVED FROM BOTH FLIGHT DECK & CABIN DESCENDING THROUGH 10K FT. SMELL LASTED ABOUT 5 MIN THEN DISSIPATED. DESCRIPTION OF ODOR/FUMES: PERSISTENT, DIRTY SOCKS AND ACRID/PUNGENT/IRRITATING/BURNING EYE SMELL. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK, FWD CABIN, MID CABIN, AND AFT CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-COMPLIED WITH W/O 349751, WHICH INCLUDES FUME TROUBLESHOOTING FOR BOTH ENGINES AND A COMPRESSOR WASH. A/C OK FOR CONTINUED SERVICE.