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Last updated: 19 February 2019
Date:Thursday 11 March 1982
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operator:Widerøes Flyveselskap
Registration: LN-BNK
C/n / msn: 568
First flight: 1977
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 13 / Occupants: 13
Total:Fatalities: 15 / Occupants: 15
Aircraft damage: Damaged beyond repair
Location:80 km (50 mls) E off Nortkapp (   Norway)
Phase: En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Berlevåg Airport (BVG/ENBV), Norway
Destination airport:Mehamn Airport (MEH/ENMR), Norway
Flightnumber: 933
The Twin Otter crashed into the sea following a failure of the fin and rudder at 2000-2500 feet. in moderate turbulence.
The accident was ordered investigated again in November 2002 after witnesses claimed to have seen a pair of British Harrier jet fighters on a Cold War mission in the same area. A retired Norwegian air traffic controller said one of the Harrier pilots requested an immediate landing because of technical problems after the Twin Otter crashed.

Probable Cause:

ORIGINAL PROBABLE CAUSE: Overload due to a combination of clear air turbulence, local whirlwind, mountain wave and the pilots spontaneous improper actions.

Tail failure
Loss of control


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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Berlevåg Airport to Mehamn Airport as the crow flies is 47 km (29 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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DHC-6 Twin Otter

  • 930+ built
  • 84th loss
  • 60th fatal accident
  • 7th worst accident (at the time)
  • 35th worst accident (currently)
» safety profile

  • 10th worst accident (at the time)
  • 12th worst accident (currently)
» safety profile