Crash-aerien 07 DEC 1952 d'un Lockheed L-1049G Super Constellation N6904C - Fallon NAS, NV (NFL)
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Statuts:Accident investigation report completed and information captured
Date:dimanche 7 dcembre 1952
Type/Sous-type:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed L-1049G Super Constellation
Compagnie:Trans World Airlines - TWA
Immatriculation: N6904C
Numéro de série: 4016
Année de Fabrication: 1952
Heures de vol:699
Moteurs: 4 Wright R-3350 (975C18CB1)
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 35
Total:victimes: 0 / à bord: 40
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Fallon NAS, NV (NFL) (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Chicago-Midway Airport, IL (MDW/KMDW), Etats-Unis d'Amérique
Aéroport de destination:San Francisco Municipal Airport, CA (SFO/KSFO), Etats-Unis d'Amérique
Numéro de vol:TW35
TWA Flight 35 was a scheduled domestic U.S. service from New York-Idlewild Airport to San Francisco with an en route stop at Chicago.
Departure from Chicago was at 10:20. The flight was routine until near Lovelock, Nevada, when, at about 17:40 and at an altitude of 16000 feet MSL, a complete power loss was experienced from engine no.3.
During a restart attempt, the engine overspeeded and the propeller was subsequently feathered.
About 25 minutes after the failure of 3 no.3 engine, engine no.4 failed. Power could not be restored, and at 18:29 the propeller was feathered and an emergency was declared.
The flight then turned back towards Naval Auxiliary Air Station at Fallon, Nevada, where weather was good.
Flaps and gear were manually lowered. After touchdown neither nose wheel steering nor brakes were working. Engines no.1 and 2 were placed in reverse pitch and the aircraft veered off the left side of the runway. Reverse pitch was cancelled.
The aircraft continued to the left of the runway, into soft dirt, through a ditch two and one-half feet deep and through several piles of gravel. The right wing with the right landing gear was torn from the fuselage at the wing fillet. The aircraft then swerved to the right and stopped.

Probable Cause:

Probable Cause:
Improper use of the emergency braking system during the course of an emergency landing. This landing was necessitated by complete loss of power from the Nos. 3 and 4 engines due to the failure of their cam drive gears.
A contributing factor was inadequacy of the company's Lockheed 1049 transition training program from the former model aircraft concerning the difference in emergency procedures.

Accident investigation:

Investigating agency: CAB
Status: Investigation completed
Duration: 218 days (7 months)
Accident number: File 1-0104
Download report: Final report


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Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Chicago-Midway Airport, IL et San Francisco Municipal Airport, CA est de 2957 km (1848 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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