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Accident
Last updated: 21 October 2017
Status:Definitief
Datum:zaterdag 28 december 1946
Tijd:02:09 UTC
Type:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed L-049 Constellation
Luchtvaartmaatschappij:Transcontinental & Western Air - TWA
Registratie: NC86505
Constructienummer: 2026
Bouwjaar:
Aantal vlieguren:1098
Motoren: 4 Wright R-3350 (745C18BA3) Cyclone
Bemanning:slachtoffers: 4 / inzittenden: 9
Passagiers:slachtoffers: 5 / inzittenden: 14
Totaal:slachtoffers: 9 / inzittenden: 23
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:1,5 km (0.9 mijl) WNW of Shannon Airport (SNN) (   Ierland)
Fase: Nadering (APR)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Paris-Orly Airport (ORY/LFPO), Frankrijk
Vliegveld van aankomst:Shannon Airport (SNN/EINN), Ierland
Vluchtnummer:6963
Beschrijving:
TWA's Constellation "Cairo Skychief" departed Paris-Orly at 23:16 on a flight to New York via Shannon and Gander. The en route portion of the flight was uneventful and at 02:00 Shannon control tower cleared the aircraft for approach to runway 14. At 02:06 the flight reported over the range station at 1,200 feet at which time Shannon Tower advised it that Shannon was reporting 10/10 cloud cover at 400 feet, 4/10 at 250 feet, visibility 1 mile, wind 120 degrees, 5 knots. While turning to the left for final approach to runway 14, the aircraft passed behind a low hill which blocked the airport lights from the pilot's vision.
At the end of a left hand turn to finals. During this turn the aircraft lost at least 150 feet of altitude and the left wing tip struck the ground. The plane crashed and caught fire.

Probable Cause:

PROBABLE CAUSE: "An error in altimeter indication, the primary reason for which was the reversal of the primary and alternative static source lines which led the pilot to conduct his approach to the airport at a dangerously low altitude. A contributing factor was the negligence of maintenance personnel in certifying to the satisfactory functioning of the static system although the tests required to determine such a condition were not accomplished. A further contributing factor was the restriction of vision from the cockpit resulting from fogging of the unheated windshield panels."

Bronnen:
» Air Britain Casualty compendium (pt. 45)
» CAB File No. 6127-46


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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 Paris-Orly Airport en Shannon Airport bedraagt 901 km (563 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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