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United Airlines Flight 859 was a Douglas DC-8, registration N8040U[1], on a scheduled passenger flight that crashed on landing at Stapleton International Airport in Denver, Colorado after departing from Omaha, Nebraska's Eppley Airfield on July 11, 1961. Eighteen people were killed, and 84 were injured.

United Airlines Flight 859
Wreckage of the aircraft after the accident
Accident
DateJuly 11, 1961
SummaryMechanical failure combined with pilot error
SiteDenver, Colorado
Total fatalities18
Total injuries84
Aircraft
Aircraft typeDouglas DC-8-12
OperatorUnited Airlines
RegistrationN8040U
Flight originOmaha-Eppley Airfield, Nebraska
DestinationDenver-Stapleton International Airport, Colorado
Passengers115
Crew7
Fatalities17
Injuries84
Survivors105
Ground casualties
Ground fatalities1

The crash was caused by the failure of the two port engines to generate reverse thrust, which sent the aircraft off the runway. One of the plane's fuel tanks subsequently ruptured and ignited.


Accident


The aircraft on fire during the emergency response
The aircraft on fire during the emergency response

The aircraft had suffered a hydraulic failure while en route from Omaha. The failure was not thought serious, however; the crew followed the checklists for hydraulic failure, and preparation was made for an expected routine landing. The plane touched down normally, but when the engines' thrust levers were moved to the reverse position, the reverser buckets for the engines on the port side failed to deploy correctly.[2] That failure caused the left-side engines to continue generating forward thrust, while the right-side engines generated reverse thrust.

The plane immediately began to veer to the right as a result of the asymmetrical thrust. All tires blew out on the right main landing gear, after which the plane left the runway and hit a taxiway still under construction. The nose gear collapsed, and the airplane then slammed into several airport vehicles, including construction equipment. This ruptured a fuel tank on the right wing and caught fire, killing 18 (including one on the ground) and injuring 84 out of a total of 122 people aboard.


Investigation


Carbon monoxide poisoning was the cause of death for 16 of the passengers, who were unable to evacuate. One elderly woman broke both ankles during the evacuation, and later died from shock.[3]

The Civil Aeronautics Board (CAB) report stated that a contributing factor to the accident was the failure of the first officer to monitor the reverse thrust indicator lights when he applied reverse thrust.[4]

The airport fire department was found to be deficient in its emergency equipment, but the fire crews were praised for their efforts.


See also



References





На других языках


[de] United-Air-Lines-Flug 859

Auf dem United-Air-Lines-Flug 859 (Flugnummer UA859) verunglückte am 11. Juli 1961 eine Douglas DC-8-12 der United Air Lines bei der Landung auf dem Stapleton International Airport in Denver, Colorado, USA. Bei dem Unfall kamen 17 Insassen an Bord der Maschine ums Leben, außerdem starb ein Mensch am Boden.
- [en] United Air Lines Flight 859

[it] Volo United Airlines 859

Il volo United Airlines 859 era un volo di linea passeggeri nazionale da Omaha a Denver, negli Stati Uniti d'America. L'11 luglio 1961, un Douglas DC-8 operante su tale rotta prese fuoco durante l'atterraggio all'aeroporto Internazionale di Stapleton dopo essere uscito di pista a causa di un'avaria meccanica.[1]



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