Source: www.aeroinside.com

A PSA Airlines Canadair CRJ-900 on behalf of American Airlines, registration N565NN performing flight AA-5513 from Charlotte,NC to Burlington,VT (USA) with 33 people on board, was descending towards Burlington when the crew inquired with approach control, whether they had received any reports of smell of smoke or ashes from other aircraft, they had smelled smoke/ashes while descending through about 18000 feet and wondered whether that smell came from the California wild fires. ATC reported they were not aware of any such smells. The crew requested emergency services on stand by as a precaution and continued for a safe landing on Burlington’s runway 15 about 15 minutes later.

The aircraft remained on the ground for about two hours, then departed for the return flight and reached Charlotte with a delay of 75 minutes.