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Accident
Last updated: 20 October 2017
Status:Definitief
Datum:zondag 6 september 1953
Tijd:02:31
Type:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed L-1049 Super Constellation
Luchtvaartmaatschappij:Northwest Orient Airlines
Registratie: N6214C
Constructienummer: 4014
Bouwjaar: 1952
Aantal vlieguren:4509
Motoren: 4 Wright R-3350 (975C18CB1)
Bemanning:slachtoffers: 0 / inzittenden: 6
Passagiers:slachtoffers: 0 / inzittenden: 26
Totaal:slachtoffers: 0 / inzittenden: 32
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:Tacoma-McChord AFB, WA (TCM) (   Verenigde Staten)
Fase: Landing (LDG)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Seattle/Tacoma International Airport, WA (SEA/KSEA), Verenigde Staten
Vliegveld van aankomst:Chicago-O'Hare International Airport, IL (ORD/KORD), Verenigde Staten
Vluchtnummer:8
Beschrijving:
Northwest Super Constellation N6214C departed Seattle-Tacoma at 01:48 for a flight to Chicago. Shortly after takeoff the no. 3 prop oversped. The prop was feathered, but continued to rotate at 400rpm. While climbing through 5000 feet a severe loss of oil forced the crew to feather the no. 4 prop as well. It was decided to carry out an emergency landing at McChord AFB. Only the right hand main gear leg could be locked down prior to landing. This caused the plane to swerve off the runway, bursting into flames. All occupants were evacuated in time.

Probable Cause:

PROBABLE CAUSE: "A sequence of mechanical failures resulting in an emergency landing under adverse weather conditions with insufficient hydraulic pressure in the secondary system to extend fully the landing gear in the time available. A contributing factor was the design of the hydraulic system which did not permit use of the available pressure in the primary system for that purpose."

Bronnen:
» ICAO Accident Digest Circular 39-AN/34 (109-112)


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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 Seattle/Tacoma International Airport, WA en Chicago-O'Hare International Airport, IL bedraagt 2742 km (1714 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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