Accident
Last updated: 28 August 2014
Status:Definitief
Datum:zondag 18 december 1977
Tijd:01:38 MST
Type:Douglas DC-8-54F
Luchtvaartmaatschappij:United Airlines
Registratie: N8047U
Constructienummer: 45880/275
Bouwjaar: 1966
Motoren: 4 Pratt & Whitney JT3D-
Bemanning:slachtoffers: 3 / inzittenden: 3
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 3 / inzittenden: 3
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:5 km (3.1 mijl) E of Kaysville, UT (   Verenigde Staten) show on map
Fase: Nadering (APR)
Soort vlucht:Vracht
Vliegveld van vertrek:San Francisco International Airport, CA (SFO/KSFO), Verenigde Staten
Vliegveld van aankomst:Salt Lake City International Airport, UT (SLC/KSLC), Verenigde Staten
Vluchtnummer:2860
Beschrijving:
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: "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."

Bronnen:
» NTSB-AAR-78-8

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - USA
report status: Final
report number: NTSB/AAR-78-08
report released:27-JUL-1978
duration of investigation:221 days (7.4 months)
download report: United Airlines, Inc., Douglas DC-8-54, N8047U, near Kaysville, Utah, December 18, 1977. (NTSB/AAR-78-08)

Veiligheidsmaatregelen

NTSB issued 2 Safety Recommendations

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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 San Francisco International Airport, CA en Salt Lake City International Airport, UT bedraagt 955 km (597 miles).

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