As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 4322 DURING INSPECTION FOUND AN OIL SMELL IN THE COCKPIT WITH THE NUMBER 1 BLEED AND PACK ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 1 ENGINE IAW 71-000-00. THE OPERATIONAL CHECK WAS GOOD. NO LEAKS NOTED. THE CAUSE OF THE SMOKE WAS DETERMINED TO BE FROM A FAULTY NR 4 CARBON SEAL. THE AIRCRAFT WAS RETURNED TO SERVICE.