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Last updated: 6 December 2019
Status:Definitief
Datum:zaterdag 1 oktober 1966
Tijd:20:10
Type:Silhouette image of generic DC91 model; specific model in this crash may look slightly different
Douglas DC-9-14
Luchtvaartmaatschappij:West Coast Airlines
Registratie: N9101
Constructienummer: 45794/52
Bouwjaar: 1966
Aantal vlieguren:164
Motoren: 2 Pratt & Whitney JT8D-1
Bemanning:slachtoffers: 5 / inzittenden: 5
Passagiers:slachtoffers: 13 / inzittenden: 13
Totaal:slachtoffers: 18 / inzittenden: 18
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:9 km (5.6 mijl) S of Wemme, OR (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Eugene Airport, OR (EUG/KEUG), Verenigde Staten
Vliegveld van aankomst:Portland International Airport, OR (PDX/KPDX), Verenigde Staten
Vluchtnummer: 956
Beschrijving:
West Coast Flight 956 departed San Francisco (SFO) at 18:44 for a flight to Eugene (EUG), Portland (PDX) and Seattle (SEA). The brand new DC-9 aircraft, which had been delivered to West Coast Airlines just 2 weeks earlier, arrived at Eugene at 19:34 and took off again 18 minutes later. At 20:04 the crew were cleared to descend from the cruising altitude of FL140 to 9000 feet. While turning to heading 300deg, the aircraft descended below the clearance altitude and impacted the wooded eastern slope of Salmon Mountain at the 3830 feet level. The aircraft attitude was 30 degrees right bank, in a 3-4 degree climbing flight path on a heading of 265 degrees.

Probable Cause:

PROBABLE CAUSE: "The descent of the aircraft below its clearance limit and below that of surrounding obstructing terrain, but the Board had been unable to determine the cause of such descent."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 2 months
Accident number: NTSB File 1-0015
Download report: Final report


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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 Eugene Airport, OR en Portland International Airport, OR bedraagt 169 km (106 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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DC-9-10

  • 147 built
  • The first ongeval
  • The first dodelijk ongeval
  • The zwaarste ongeval (toen het plaatsvond)
  • 8e zwaarste ongeval (op dit moment)
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