Accident
Last updated: 27 November 2014
Status:Definitief
Datum:vrijdag 10 maart 1967
Tijd:05:03
Type:Silhouette image of generic F27 model; specific model in this crash may look slightly different
Fairchild F-27
Luchtvaartmaatschappij:West Coast Airlines
Registratie: N2712
Constructienummer: 73
Bouwjaar: 1960
Aantal vlieguren:16202
Motoren: 2 Rolls-Royce Dart 514-7
Bemanning:slachtoffers: 3 / inzittenden: 3
Passagiers:slachtoffers: 1 / inzittenden: 1
Totaal:slachtoffers: 4 / inzittenden: 4
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:6,6 km (4.1 mijl) SE of Klamath Falls, OR (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Klamath Falls-Kingsley Field, OR (LMT/KLMT), Verenigde Staten
Vliegveld van aankomst:Medford-Jackson County Airport, OR (MFR/KMFR), Verenigde Staten
Vluchtnummer: 720
Beschrijving:
Fairchild F-27 N2712 operated on a flight from Klamath Falls to Seattle via Medford, North Bend and Portland. Because snow was falling at Klamath Falls, the aircraft was loaded in the hangar instead of on the ramp. There was some delay in pushing out the aircraft onto the ramp because the tow tractor lost traction in the snow. The aircraft was exposed to the falling snow for about 11 minutes before the plane was able to taxy out to runway 14. A few minutes later, at 05:01 the aircraft took off. During the takeoff roll, after rolling about 1000 feet, the aircraft gradually served to the left. The nose wheel left the ground 600 feet prior to the main gear at a point where the track was half way between the center of the runway and the left row of runway lights. The left main gear was about 12 feet off the left edge of the runway for a distance of 250 feet prior to lift-off. Just after lift-off the aircraft swerved sharply to the right and immediately back to the left. On climb out the aircraft tended to the left, despite several course corrections. After reaching 5250 feet, the altitude dropped again to 4700 feet. The aircraft continued to climb until it crashed on a steep ridge on the northwest slope of Stukel Mountain at an elevation of 5049 feet (1539 m). The F-27 was in a right wing low attitude when this wing contacted the mountain; the aircraft then cartwheeled up the 30deg upslope of the mountain.

PROBABLE CAUSE: "Loss of control due to ice accretion on airframe surfaces. The Board further determines that the pilot should have required that de-icing fluid be applied to the aircraft to remove the accumulation of ice and snow prior to takeoff. This had not been done by the appropriate maintenance personnel."

Bronnen:

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB File 1-0007
report released:06-MAR-1968
duration of investigation:362 days (12.1 months)
download report: West Coast Airlines, Inc., Fairchild F-27, N2712, near Klamath Falls, Oregon, March 10, 1967 (NTSB File 1-0007)

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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 Klamath Falls-Kingsley Field, OR en Medford-Jackson County Airport, OR bedraagt 96 km (60 miles).

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