Accident
Last updated: 1 November 2014
Statuts:Enquête Officielle
Date:mercredi 17 février 2010
Heure:16:57
Type/Sous-type:Silhouette image of generic C208 model; specific model in this crash may look slightly different
Cessna 208B Grand Caravan
Compagnie:Grant Aviation
Immatriculation: N207DR
Numéro de série: 208B-0859
Année de Fabrication: 2000
Moteurs: 1 Pratt & Whitney Canada PT6A-114A
Equipage:victimes: 0 / à bord: 1
Passagers:victimes: 0 / à bord: 7
Total:victimes: 0 / à bord: 8
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:près de Kwigillingok Airport, AK (KWK) (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Kwigillingok Airport, AK (KWK/PAGG), Etats-Unis d'Amérique
Aéroport de destination:Kipnuk Airport, AK (KPN/PAKI), Etats-Unis d'Amérique
Détails:
A Cessna 208B, N207DR, sustained substantial damage during impact with terrain following takeoff from Kwigillingok Airport, Alaska. The airline transport pilot and his seven passengers were not injured. Visual meteorological conditions prevailed for the flight, which was originating at the time of the accident. The intended destination was Kipnuk, Alaska, and a company flight plan had been filed.
The pilot said that the takeoff was normal, but at 200 feet above the ground and in a turn, he observed a reduction in power. He moved the emergency fuel control lever forward, and power was restored. Before the sink rate could be reversed, the airplane impacted the surface of a frozen lake, and the end of the right wing was bent up. The aileron was not damaged. For safety reasons, the pilot chose to fly straight ahead for 8 miles to Kongiganak, Alaska, where the flight landed without further difficulty. The right wing required a major repair to restore it to airworthy condition.
A postaccident inspection disclosed no mechanical anomalies with the engine or its accessories, and the airplane was flown to its base after the wing was repaired without any engine problems noted. A weather study by a Safety Board meteorologist determined that the area was subject to light snow showers, freezing fog and mist, and surface temperatures below freezing, all conducive to wing/airframe icing. During an interview with Federal Aviation Administration inspectors, the pilot acknowledged seeing "a trace of ice" on the wings.


PROBABLE CAUSE: "The pilot's decision to take off with ice-contaminated wings in freezing rain and mist, which resulted in an aerodynamic stall."

Sources:
» NTSB


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Plan
Ce plan montre l'aéroport de départ ainsi que la supposé destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Kwigillingok Airport, AK et Kipnuk Airport, AK est de 50 km (32 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 tels qui sont connus à ce jour.
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