
A helicopter that crashed on Alaska’s remote and vast North Slope in July, killing three state scientists and the pilot, stopped sending flight-status data to a real-time tracking system as it passed over the southeastern shoreline of an Arctic lake, according to a preliminary report on the crash released Tuesday.
The Bell 206L-4 helicopter was later found fragmented and partially submerged in Lake Itinik, a large oval-shaped body of water that measures 3 miles (4.83 kilometers) wide in some places, according to the report from the National Transportation Safety Board.