What was found
DURING DESCENT THROUGH 10,000 FT. A DIRTY SOCKS ODOR BEGAN. FLIGHT ATTENDANT CALLED AND STATED THE SAME INDEPENDENT OF OUR DETECTION. AIRCRAFT CONFIG WAS PACK 1 ON, PACK 2 OFF, BLEED 1 ON, BLEED 2 ON, IAW TSM 05-50-00-810-831-A. FOUND DEOILER ON BOTH ENGINES HAD RESIDUAL OIL AROUND SEALS. R & R DEOILER SEALS ON THE ENGINES IAW AMM 72-60-31.. PERFORMED DECONTAMINATION OF ECS. NO FUMES DETECTED.