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Statuts:Enquête Officielle
Date:lundi 14 janvier 2008
Heure:05:08
Type/Sous-type:Silhouette image of generic B190 model; specific model in this crash may look slightly different
Beechcraft 1900C-1
Compagnie:Alpine Aviation
Immatriculation: N410UB
Numéro de série: UC-70
Année de Fabrication: 1989
Heures de vol:19123
Moteurs: 2 Pratt & Whitney Canada PT6A-65B
Equipage:victimes: 1 / à bord: 1
Passagers:victimes: 0 / à bord: 0
Total:victimes: 1 / à bord: 1
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:11 km (6.9 milles) S de Lihue, HI (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Cargo
Aéroport de départ:Honolulu International Airport, HI (HNL/PHNL), Etats-Unis d'Amérique
Aéroport de destination:Kauai Island/Lihue Airport, HI (LIH/PHLI), Etats-Unis d'Amérique
Numéro de vol:AIP253
Détails:
Alpine Air flight 253 departed Honolulu (HNL) at 04:43 carrying about 4,200 pounds of mail on a regularly scheduled flight to Kauai, Lihue (LIH).
It was scheduled to arrive at Lihue at 05:15. The pilot had routine contact with air traffic control, and was advised by the controller to maintain 6,000 feet at 05:01 when the airplane was 11 miles from the destination airport. Two minutes later the flight was cleared for a visual approach to follow a preceding Boeing 737 (Aloha Airlines Flight 917) and advised to switch to the common traffic advisory frequency at the airport. The pilot altered his flight course to the west, most likely for spacing from the airplane ahead, and descended into the water as he began a turn back toward the airport. The majority of the wreckage sank in 4,800 feet of water.
The pilot most likely descended into the ocean because he became spatially disoriented. Although visual meteorological conditions prevailed, no natural horizon and few external visual references were available during the visual approach. This increased the importance of monitoring flight instruments to maintain awareness of the airplane attitude and altitude. The pilot's tasks during the approach, however, included maintaining visual separation from the airplane ahead and lining up with the destination runway. These tasks required visual attention outside the cockpit. These competing tasks probably created shifting visual frames of reference, left the pilot vulnerable to common visual and vestibular illusions, and reduced his awareness of the airplane's attitude, altitude and trajectory.

Probable Cause:

PROBABLE CAUSE: "The pilot's spatial disorientation and loss of situational awareness. Contributing to the accident were the dark night and the task requirements of simultaneously monitoring the cockpit instruments and the other airplane."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 4 months
Accident number: SEA08FA062
Download report: Summary report
Language: English

Sources:
» SKYbrary 
» NTSB
» FAA


Photos

photo of Beechcraft-1900C-1-N15674
accident date: 14-01-2008
type: Beechcraft 1900C-1
registration: N15674
 

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 Honolulu International Airport, HI et Kauai Island/Lihue Airport, HI est de 162 km (102 miles).
Accident location: Approximate; accuracy within a few kilometers.

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.
languages: languages

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Beech 1900

  • 695 built
  • 27ème loss
  • 17ème accident fatal
  • le accident 15ème le plus grave (à ce moment là)
  • le accident 25ème le plus grave (en ce moment)
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