What was found
FUME EVENT ON DESCENT , ENGINES IDLE PASSING 5000, DIRTY SOCK SMELL THROUGH COCKPIT VENTS REMAINED THROUGH REMAINDER OF APPROACH // PERFORMED TASK TSM 71-00-00-810-847A DUAL ENGINE RUNS NORMAL, NO ABNORMAL SMELLS NOTED ON PACK 1 OR 2 OIL QTY NORMAL AC OK TO CONTINUE.