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 (1961-07-11)
SummaryMechanical failure combined with pilot error
Site Denver, Colorado
Total fatalities18
Total injuries84
Aircraft
United Douglas DC-8.jpg
A similar United DC-8 to the one involved
Aircraft type Douglas DC-8-12
Operator United Airlines
IATA flight No.UA859
ICAO flight No.UAL859
Call signUNITED 859
Registration N8040U
Flight origin Eppley Airfield, Nebraska
Destination Stapleton International Airport, Colorado
Occupants122
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.

Background

Aircraft

The aircraft involved was a Douglas DC-8-12, registration N8040U. It was manufactured on June 10, 1961, and had accumulated a total of 124:39 flight hours at the time of the accident. It was powered by four Pratt & Whitney JT3C-6 engines. [2]

Crew

The crew consisted of Captain John Grosso, First Officer Arthur F. Putz, Flight Engineer James M. Beatie and four stewardesses. Captain Grosso was a highly experienced pilot, having accumulated 17,631 flight hours, of which 168 were in the DC-8. First Officer Putz had accumulated 9,839 flight hours, of which 120 were in the DC-8. Flight Engineer Beatie had accumulated 8,416 flight hours, of which 215 were in the DC-8. [3]

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. [4] 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. [5]

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. [6]

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

  1. ↑ "FAA Registry (N8040U)". Federal Aviation Administration.
  2. ↑ "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on October 8, 2011.
  3. ↑ "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on October 8, 2011.
  4. ↑ "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on October 8, 2011.
  5. ↑ "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on October 8, 2011.
  6. ↑ "Aircraft Accident Report: United Airlines Flight 859". Archived from the original on October 8, 2011.

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

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