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Last updated: 27 September 2021
Statuts:
Date:mardi 11 juillet 1961
Heure:11:36 MST
Type/Sous-type:Douglas DC-8-12
Compagnie:United Airlines
Immatriculation: N8040U
Numéro de série: 45307/146
Année de Fabrication: 1961
Heures de vol:124
Moteurs: 4 Pratt & Whitney JT3C-6
Equipage:victimes: 0 / à bord: 7
Passagers:victimes: 17 / à bord: 115
Total:victimes: 17 / à bord: 122
Victimes au sol:victimes: 1
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Denver-Stapleton International Airport, CO (DEN) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Omaha-Eppley Airfield, NE (OMA/KOMA), Etats-Unis d'Amérique
Aéroport de destination:Denver-Stapleton International Airport, CO (DEN/KDEN), Etats-Unis d'Amérique
Numéro de vol:UA859
Détails:
Following departure from Omaha, hydraulic difficulties were experienced. The flight continued to Denver, using flight manual procedures. Upon arrival near Denver, the ejectors were extended hydraulically, but the hydraulic pressure dropped to zero when an attempt was made to extend flaps to 25 degrees. The hydraulic system selector was then placed in the no. 3 position (flap and gear downlock) and the approach was continued. After touchdown the throttles were placed in the idle reverse thrust position and power was applied. An uncontrollable deviation from the runway occurred and the aircraft crashed into a new taxiway construction. The undercarriage was torn off and the DC-8 caught fire and burned.

Probable Cause:

PROBABLE CAUSE: "The Board determines the probable cause of this accident was the asymmetric thrust which, during a hydraulic emergency, resulted from failure of the thrust reversers on engines nos. 1 and 2 when reverse thrust was selected. A contributing factor was the failure of the first officer to monitor the thrust reverse indicator lights when applying reverse thrust."



Photos

photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
photo of Douglas-DC-8-12-N8040U
accident date: 11-07-1961
type: Douglas DC-8-12
registration: N8040U
 

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 Omaha-Eppley Airfield, NE et Denver-Stapleton International Airport, CO est de 772 km (483 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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