What was found
DURING DESCENT, ODOR OF DIRTY SOCKS DETECTED IN COCKPIT AND THEN DISAPATED ON LANDING. FOUND EVIDENCE OF AN OIL LEAK FROM THE NR 1 ENGINE DEOILER CASING ASSY. R & R THE NR 1 ENGINE DEOILER SEAL AND MATING RING IAW AMM 72-60-29, & TSM 05-50-00-810. PERFORMED A NR 1 ENGINE RUN IAW AMM 71-00-00, NO ODORS NOTED. OPS AND LEAK CHECKED GOOD.