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Last updated: 27 November 2021
Statuts:Enquête Officielle
Date:dimanche 11 septembre 1988
Heure:21:57
Type/Sous-type:Silhouette image of generic BE20 model; specific model in this crash may look slightly different
Beechcraft 200 Super King Air
Compagnie:Snowy Butte Aviation
Immatriculation: N1283
Numéro de série: BB-90
Année de Fabrication: 1976
Heures de vol:5677
Moteurs: 2 Pratt & Whitney Canada PT6A-41
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:Jackson, WY (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Convoyage
Aéroport de départ:Jackson Hole Airport, WY (JAC/KJAC), Etats-Unis d'Amérique
Aéroport de destination:Redding Airport, CA (RDD/KRDD), Etats-Unis d'Amérique
Détails:
The pilot and his two passengers had just arrived at the Jackson Hole Airport, WY (JAC) approximately 30 minutes prior to the accident. The pilot dropped off his passengers and stepped into operations for a short break. He then returned to the aircraft by himself for a return flight to Redding Airport, CA (RDD). It was a very dark night with a 2000 ft overcast and no visible horizon. The pilot had departed Redding, CA at 13:57 hours and had been on continuous flight duty from that time until the time of the accident. A witness stated the pilot seemed to be tired and hungry. The aircraft was observed making a normal night takeoff. Witnesses stated that as the aircraft turned from crosswind to downwind it appeared that the pilot had trouble controlling the aircraft. After the aircraft made a few extreme up and down manoeuvres, it appeared to proceed to the east. The next time the aircraft was observed, it was again climbing and descending rapidly and subsequently impacted the ground in a vertical dive.

Probable Cause:

PROBABLE CAUSE:
altitude..uncontrolled..pilot in command
planning/decision..poor..pilot in command
flight controls..improper use of..pilot in command
spatial disorientation..pilot in command
CONTRIBUTING FACTORS:
light condition..dark night
fatigue(flight schedule)..pilot in command

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 3 months
Accident number: DEN88FA202
Download report: Summary report

Sources:
» NTSB


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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 Jackson Hole Airport, WY et Redding Airport, CA est de 1006 km (629 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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