As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3538 THE FLIGHT ATTENDANT REPORTED THAT AFTER LANDING A BURNING ODOR WAS NOTICE IN THE CABIN. THE COCKPIT CREW NOTICED THE ODOR IN THE COCKPIT AS WELL. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED ENGINE ODOR EVENT TROUBLESHOOTING IAW-ETN-EM-72-034. NO ODOR FOUND. THE AIRCRAFT WAS RETURNED TO SERVICE.