As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4680 THE CREW REPORTED THAT DURING ALL PHASES OF FLIGHT NOTICED AN OIL ODOR IN THE CABIN. THE AIRCRAFT WAS REMOVED FROM SERVICE. TROUBLESHOT PER ETN: EM-72-034R4 AND FIM 21-20-00-810-801-A AND COULD NOT DUPLICATE THE ODOR. NO DEFECTS NOTED AT THIS TIME. NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.