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Braathens SAFE Flight 239

Braathens SAFE Flight 239
Asker-ulykken.jpg
Salvage of the wreck
Accident summary
Date 23 December 1972
Summary Controlled flight into terrain
Site Vestmarka, Asker, Norway
59°51′57″N 10°20′21″E / 59.86583°N 10.33917°E / 59.86583; 10.33917Coordinates: 59°51′57″N 10°20′21″E / 59.86583°N 10.33917°E / 59.86583; 10.33917
Passengers 42
Crew 3
Fatalities 40
Injuries (non-fatal) 5
Survivors 5
Aircraft type Fokker F28 Fellowship 1000
Aircraft name Sverre Sigurdsson
Operator Braathens SAFE
Registration LN-SUY
Flight origin Ålesund Airport, Vigra
Destination Oslo Airport, Fornebu

Braathen SAFE Flight 239, also known as the Asker Accident (Norwegian: Asker-ulykken), was a controlled flight into terrain of a Fokker F28 Fellowship into Vestmarka in Asker, Norway, on 23 December 1972 at 16:33. The Braathens SAFE aircraft was en-route on a scheduled flight from Ålesund Airport, Vigra and crashed during approach to Oslo Airport, Fornebu. Forty of the forty-five people on board the aircraft were killed, making it the deadliest civil aviation accident in Norway until 1996.

The pilots took a short-cut during approach on runway 06 at Fornebu. Combined with false signals from the instrument landing system (ILS), this caused the pilots to misunderstand their location. This in turn led them to take an incorrect landing path, causing the plane to hit ground in a hilly area. The rescue operation was initiated almost immediately, but it took six and a half hours to find the aircraft. Three years later, the investigation commission concluded that various measures should be put in place to improve navigation, to avoid similar situations in which pilots misunderstood their location.

The accident aircraft, a Fokker F28 Fellowship 1000 had aircraft registration LN-SUY and was named Sverre Sigurdsson. It was equipped with two Rolls-Royce Spey Jr. 555-15 engines. Braathens SAFE was the launch customer of the F28 and Sverre Sigurdsson was the first F28 to fly in revenue service, in early 1969. By 1972 Braathens had six such aircraft in its fleet. The airline had seen some operational difficulties as an early operator of the aircraft type. LN-SUY had serial number 11011 and had at the time of the accident flown 8228 hours and had conducted 16710 cycles. It had a capacity of sixty-five passengers, and was insured with Norsk Flyforsikringspool.


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