Widerøe Flight 710, known as the Torghatten Accident, was a controlled flight into terrain into the mountain of Torghatten in Brønnøy Municipality, Norway. The Widerøe-operated de Havilland Canada Dash 7 crashed on 6 May 1988 at 20:29:30 during approach to Brønnøysund Airport, Brønnøy. All thirty-six people on board LN-WFN were killed; the crash remains the deadliest accident involving the Dash 7 and the deadliest in Northern Norway. The direct cause of the accident was that the aircraft had descended from 500 to 170 meters at 8 NM instead of 4 NM from the airport.