What was found
OIL SMELL IN CABIN, RTFL. ACCOMPLISHED UPPER BLEED AIR DUCT INSP ON NR 1 & 2 ENG. NO OIL NOTED IN DUCTS. REPLACED LT & RT RECIRCULATION FILTERS. UPON REMOVING NR 1 ENG INLET CONE, FOUND OIL IN SHAFT. OIL IN THIS AREA INDICATES LPT BLIND CAP SEAL LEAKING. COVER SEAL (222-1090) ALSO REQUIRED REF MM. CLN INSIDE LPT FWD EXT SHAFT AND CAVITIES WITH ISO ALCOHOL PRIOR TO REPLACING INLET CONE. AFTER ACFT RESTORED TO NORMAL ACCOMPLISHED ECS DECONTAMINATION PROCEDURES IAW TASK MM. ACCOMPLISHED HIGH POWER RUN AT 1.2 EPR FOR 10 MIN SHUTDOWN & CHECK INLET CONE TO VERIFY NO LEAK 2. BORESCOPE HPC STAGES 3 & 4 CHECKING FOR EVIDENCE OF OIL. REMOVED, CLEANED & REINSTALLED SPINNER, BOROSCOPED HPC 3&4, NO OIL FOUND.