The commission recommended that Widerøe update its maps for Brønnøysund , review and improve its landing procedures , improve its internal control procedures to ensure that pilots follow the airline 's flight operation regulations , and introduce the Sterile Cockpit Rule . The commission recommended that the Civil Aviation Administration change the flight paths at Brønnøysund to increase the altitude around Torghatten . Flight 710 was the second of four fatal Widerøe accidents which occurred between 1982 and 1993 . In the first accident , Flight 933 , a poor cockpit culture had also been discovered , but little was followed up , in part because of a conspiracy theory which surfaced regarding a collision with a fighter jet . Also in the following two major Widerøe accidents , Flight 893 in 1990 and Flight 744 in 1993 , the investigation uncovered operational shortcomings
Flight 933
Widerøe Flight 933
Widerøe Flight 710