United Air Lines Flight 859

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United Airlines Flight 859
United Air Lines N8040U after accident2.jpg
Wreckage of the aircraft after the accident
Accident
DateJuly 11, 1961
SummaryMechanical failure combined with pilot error
Site Denver, Colorado
Total fatalities18
Total injuries84
Aircraft
Aircraft type Douglas DC-8-12
Operator United Airlines
Registration N8040U
Flight origin Omaha-Eppley Airfield, Nebraska
Destination Denver-Stapleton International Airport, Colorado
Passengers115
Crew7
Fatalities17
Injuries84
Survivors105
Ground casualties
Ground fatalities1

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.

Contents

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 United Air Lines N8040U after accident.jpg
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

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References

  1. "FAA Registry (N8040U)". Federal Aviation Administration.
  2. "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on 2011-10-08.
  3. "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on 2011-10-08.
  4. "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on 2011-10-08.

39°45′38.6″N104°53′31.1″W / 39.760722°N 104.891972°W / 39.760722; -104.891972