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Accident
Last updated: 17 October 2017
Statuts:Enquête Officielle
Date:samedi 6 août 1966
Heure:23:12
Type/Sous-type:Silhouette image of generic BA11 model; specific model in this crash may look slightly different
BAC One-Eleven 203AE
Compagnie:Braniff International Airways
Immatriculation: N1553
Numéro de série: 070
Année de Fabrication: 1965
Heures de vol:2307
Cycles:2922
Moteurs: 2 Rolls-Royce Spey 506-14/15
Equipage:victimes: 4 / à bord: 4
Passagers:victimes: 38 / à bord: 38
Total:victimes: 42 / à bord: 42
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:12 km (7.5 milles) NNE of Falls City, NE (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Kansas City Downtown Municipal Airport, MO (MKC/KMKC), Etats-Unis d'Amérique
Aéroport de destination:Omaha-Eppley Airfield, NE (OMA/KOMA), Etats-Unis d'Amérique
Numéro de vol: 250
Détails:
One-Eleven N1553 departed New Orleans, LA at 18:35 for a passenger flight to Minneapolis, MO with intermediate stops at Shreveport, LA, Fort Smith, AR, Tulsa, OK, Kansas City, MO and Omaha, NE. Flight 250 departed Kansas City at 22:55 on an IFR clearance to Omaha at FL200. However, the crew asked if they could remain at 5000 feet because of the weather. The flight remained at 6000 feet until permission was received at 23:06 to descend to 5000 feet. At 23:08 the crew contacted a company flight which had just departed Omaha. This flight reported moderate to light turbulence. About four minutes later the aircraft entered an area of an active squall line. The One-Eleven violently accelerated upward and in a left roll. At this time the right tailplane and the fin failed. The aircraft then pitched nose down and within one or two seconds the right wing failed as well. The plane tumbled down in flames until stabilizing into a flat spinning-attitude before impacting the ground.
Braniff regulations prohibit a plane from being dispatched into an area with a solid line of thunderstorms; however the company forecast was somewhat inaccurate with respect to the number and intensity of thunderstorms and the intensity of the associated turbulence.

Probable Cause:

PROBABLE CAUSE: "In-flight structural failure caused by extreme turbulence during operation of the aircraft in an area of avoidable hazardous weather."

Sources:
» NTSB File 1-0008


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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 Kansas City Downtown Municipal Airport, MO et Omaha-Eppley Airfield, NE est de 265 km (165 miles).
Accident location: Exact; as reported in the official accident report.

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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BAC One-Eleven

  • 245 built
  • 3ème loss
  • 2ème accident fatal
  • le accident The le plus grave (à ce moment là)
  • le accident 4ème le plus grave (en ce moment)
» safety profile

 Etats-Unis d'Amérique
  • le accident 43ème le plus grave (à ce moment là)
  • le accident 81ème le plus grave (en ce moment)
» safety profile