What was found
DIRTY SOCKS/FOUL ENGINE OIL ODOR DURING DESCENT. NEITHER PACK BEING TURNED OFF HELPED. BACK F/A ALSO REPORTED FUMES/DIRTY SOCK SMELL. ACCOMPLISHED ENG AND APU OPERATION REF AMM 71-00-00-710-043-A AND 49-00-00-710-008-A AND OPERATED PACK 1&2. CABIN ODOR ISOLATED TO PACK 1. ACCOMPLISHED DECONTAMINATION OF THE ENVIROMENTAL CONTROL SYSTEMON PACK 1 IAW AMM 21-00-00-615-002-A. NO SMELL/ODOR NOTICED AT THIS TIME.