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Last updated: 27 September 2021
Status:
Datum:dinsdag 11 juli 1961
Tijd:11:36 MST
Type:Douglas DC-8-12
Luchtvaartmaatschappij:United Airlines
Registratie: N8040U
Constructienummer: 45307/146
Bouwjaar: 1961
Aantal vlieguren:124
Motoren: 4 Pratt & Whitney JT3C-6
Bemanning:slachtoffers: 0 / inzittenden: 7
Passagiers:slachtoffers: 17 / inzittenden: 115
Totaal:slachtoffers: 17 / inzittenden: 122
Slachtoffers op de grond:slachtoffers: 1
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:Denver-Stapleton International Airport, CO (DEN) (   Verenigde Staten)
Fase: Landing (LDG)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Omaha-Eppley Airfield, NE (OMA/KOMA), Verenigde Staten
Vliegveld van aankomst:Denver-Stapleton International Airport, CO (DEN/KDEN), Verenigde Staten
Vluchtnummer:UA859
Beschrijving:
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."



Foto's

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
 

Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Omaha-Eppley Airfield, NE en Denver-Stapleton International Airport, CO bedraagt 772 km (483 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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