As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE START, THE NR 1 ENGINE SMOKED. CLEARED AFTER A FEW MOMENTS, ALL INDICATIONS WERE NORMAL. DURING DESCENT AN OILY SMELL CAME THROUGH THE AIR CONDITIONING SYSTEM, WAS ABLE TO STOP THE SMELL BY CLOSING THE NR 1 ENGINE BLEED AIR VALVE. REMOVED AND REPLACED THE NR 1 ENGINE AND TRIMMED IAW AIA WORK CARD 7EC7100. NO DEFECTS NOTED ON GROUND RUN.