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Accident
Last updated: 19 October 2017
Statuts:Enquête Officielle
Date:mardi 25 septembre 2001
Heure:16:09
Type/Sous-type:Silhouette image of generic DC6 model; specific model in this crash may look slightly different
Douglas DC-6BF
Compagnie:Northern Air Cargo
Immatriculation: N867TA
Numéro de série: 45202/880
Année de Fabrication: 1957
Heures de vol:70754
Moteurs: 4 Pratt & Whitney R-2800-CB3
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 3
Dégats de l'appareil: Substantiels
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Deadhorse-Alpine Airstrip, AK (DQH) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Cargo
Aéroport de départ:Prudhoe Bay/Deadhorse Airport, AK (SCC/PASC), Etats-Unis d'Amérique
Aéroport de destination:Deadhorse-Alpine Airstrip, AK (DQH/PALP), Etats-Unis d'Amérique
Numéro de vol: 690
Détails:
Northern Air Cargo Flight 690 departed Deadhorse for a flight to Alpine airstrip at around 15:30. The purpose of the flight was to deliver about 20,000 pounds of oil drilling equipment to a remote oil production site. Light snow showers were present, with visibility reported at 4 miles. The captain stated that during final approach, as the airplane passed over the airstrip threshold, a higher than normal sink rate was encountered. He said that the initial touchdown was "firm", but was thought to be within acceptable tolerances. Just after touchdown, the left wing broke free from the airplane at the wing to fuselage attach point. The airplane veered to the left, continued off the left side of the 5,000 feet long by 75 feet runway, down an embankment, and came to rest in an area of wet, tundra-covered terrain. A postcrash fire ensued, heavily damaging the center section of the fuselage.

Probable Cause:

PROBABLE CAUSE: "The flightcrew's continued use of an unstabilized GPS approach. Factors associated with the accident were low ceilings, and the inadequate coordination between the crew."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 12 months
Accident number: ANC01LA146
Download report: Summary report

Sources:
» NTSB


Photos

photo of Douglas DC-6BF N867TA
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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Prudhoe Bay/Deadhorse Airport, AK et Deadhorse-Alpine Airstrip, AK est de 94 km (59 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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