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Last updated: 27 September 2020
Statuts:Enquête Officielle
Date:dimanche 18 décembre 1977
Heure:01:38 MST
Type/Sous-type:Silhouette image of generic DC85 model; specific model in this crash may look slightly different
Douglas DC-8-54F
Compagnie:United Airlines
Immatriculation: N8047U
Numéro de série: 45880/275
Année de Fabrication: 1966
Moteurs: 4 Pratt & Whitney JT3D-
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 0 / à bord: 0
Total:victimes: 3 / à bord: 3
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:5 km (3.1 milles) E of Kaysville, UT (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Cargo
Aéroport de départ:San Francisco International Airport, CA (SFO/KSFO), Etats-Unis d'Amérique
Aéroport de destination:Salt Lake City International Airport, UT (SLC/KSLC), Etats-Unis d'Amérique
Numéro de vol:UA2860
Détails:
The aircraft was flying a holding pattern near Salt Lake City because of problems with the electrical system. The flight crew contacted the company maintenance and were absent from the approach control frequency for about 7,5 minutes. During this time the aircraft had entered an area near hazardous terrain. When the crew returned to the approach control frequency, they were told to initiate a left turn were instructed to climb immediately to 8000 feet. The aircraft eventually struck a 7665 feet high mountain at 7200 feet.

Probable Cause:

PROBABLE CAUSE: "The approach controller's issuance and the flight crew's acceptance of an incomplete and ambiguous holding clearance in combination with the flight crew's failure to adhere to prescribed impairment-of-communications procedures and prescribed holding procedures. The controller's and flight crew's actions are attributed to probable habits of imprecise communication and of imprecise adherence to procedures developed through years of exposure to operations in a radar environment. Contributing to the accident was the failure of the aircraft's No.1 electrical system for unknown reasons."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 221 days (7 months)
Accident number: NTSB/AAR-78-08
Download report: Final report

Sources:
» NTSB-AAR-78-8


Opérations de secours

NTSB issued 2 Safety Recommendations

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Photos

photo of DC-8-54F-N8047U
accident date: 18-12-1977
type: McDonnell Douglas DC-8-54F
registration: N8047U
 

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 San Francisco International Airport, CA et Salt Lake City International Airport, UT est de 955 km (597 miles).
Accident location: Exact; as reported in the official accident report.

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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DC-8

  • 556 built
  • 46ème loss
  • 31ème accident fatal
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