What was found
"ON DESCENT PASSING 18,000 FT STROGN MUSTY ODOR IN CABIN & FLIGHT DECK. SUPPLEMENTARY PERFORMED FOR ELIMINATION OF ODOR / FUMES IN COCKPIT / CABIN COMPLETE, NOT ABLE TO ISOLA TR. ODOR REMIANED PRESENTUNTIL ENGINE SHUTDOWN -FOUND OIL IN # 1 ENGINE NOSE CONE, R+R SHAFT PLATE COVER ORING IAW 72-11-00. PERFORMED LEAK CHECK, NO FURTHER OIL IN NOSE CONE. ALSO PERFORMED TI 2100-1706. DATA COLECTION OF INSPECTION RESULT OF AIRCRAFT PNEUMATIC AND AIR CONDITIONING SYSTEM AFTER SUSPECTED ODOD UCCURRENCE ALSO R+R RECIRCULATION FILTERS OK FOR SVC IAW AMM 21-21-41"