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Last updated: 18 January 2022
Statuts:Enquête Officielle
Date:mercredi 12 décembre 1956
Heure:08:50
Type/Sous-type:Silhouette image of generic L18 model; specific model in this crash may look slightly different
Lockheed 18-14 Lodestar
Compagnie:Phillips Petroleum Company
Immatriculation: N28366
Numéro de série: 18-2043
Année de Fabrication: 1940
Equipage:victimes: 2 / à bord: 2
Passagers:victimes: 6 / à bord: 6
Total:victimes: 8 / à bord: 8
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:11 km (6.9 milles) SE of Bartlesville Airport, OK (BVO) (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Affaires
Aéroport de départ:Bartlesville Airport, OK (BVO/KBVO), Etats-Unis d'Amérique
Aéroport de destination:Salt Lake City International Airport, UT (SLC/KSLC), Etats-Unis d'Amérique
Détails:
About 14 minutes after takeoff, at approximately 08:40, the co-pilot called Bartlesville Radio and stated that the flight was having engine trouble, with an oil temperature over 100 degrees, and requested that the IFR flight plan be cancelled as they might return. At 08:45, the co-pilot again stated that they could not unfeather the propeller. Bartlesville's single 4,600-foot runway had patches of snow and ice while all runways at Tulsa Airport were clear, so the pilot decided to continue to Tulsa. Heading for Tulsa, the aircraft was seen to plunge to earth in a spin. Impact with the rolling terrain was on a heading of about 240 degrees, while the wings were about level, and while the nose-down angle was close to vertical. An explosion and intense fire ensued.

Probable Cause:

PROBABLE CAUSE: "The Board determines that the probable cause of this accident was loss of flying speed during single-engine flight for reasons undetermined. resulting in a spin to the ground."

Sources:
» CAB File No. 2-0053


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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 Bartlesville Airport, OK et Salt Lake City International Airport, UT est de 1442 km (902 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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