As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL SMELL IN CABIN. RTFL. BOROSCOPED NR 1 ENG FOUND EVIDENCE OF OIL AT 3RD STAGE HPC. SPINNER REMOVED NO OIL FOUND REINSTALLED. REPLACED BOTH RECIRCULATION FILTERS. FOUND NR 1 ENG (V10095) HAS OIL CONTAMINATION AT THE ROOT OF ALL HPC STG 3 BLADES. PER EMC NEED TO REPLACE ENGINE. REPLACED NR 1 ENGINE.