As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4529 THE CREW REPORTED THE ECS SYSTEM SMELLS OF OIL. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED ETN-EM-72-034 AND FOUND 0 CARBON SEAL LEAKING. REMOVED AND REPLACED 0 CARBON SEAL FROM E#1 IAW RR MM 72-25-25-400-801. REPLACED FAN SPINNER WHEEL IAW RR MM 72-21-10-400-801 AND REPLACED FAN SPINNER IAW RR MM 72-21-20-400-801. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.