The disappearance marks the third major incident in U.S. aviation in eight days. The Bering Air Caravan, a single-engine turboprop, was heading from Unalakleet to Nome.

The Bering Air Caravan, a single-engine turboprop, was heading from Unalakleet to Nome on Thursday afternoon with nine passengers and a pilot, according to Alaska's Department of Public Safety. Authorities were working to determine its last known coordinates.

The wreckage of a plane matching the description of one that went missing Thursday afternoon was found on sea ice in Alaska on Friday, the U.S. Coast Guard said. None of the nine passengers or the pilot flying the single-engine turboprop plane.