Accident
Last updated: 20 April 2014
Estado:Final
Fecha:viernes 22 mayo 1953
Hora:04:13
Tipo:Curtiss C-46F-1-CU Commando
Operado por:Resort Airlines
Alquilado a :United States Air Force - USAF
Registración: N1669M
Numéro de série: 22536
Año de Construcción:
Horas Totales de la Célula:6867
Motores: 2 Pratt & Whitney R-2800-75
Tripulación:Fatalidades: 2 / Ocupantes: 2
Pasajeros:Fatalidades: 0 / Ocupantes: 0
Total:Fatalidades: 2 / Ocupantes: 2
Daños en la Aeronave: Anulado
Consecuencias: Written off (damaged beyond repair)
Ubicación:18 km (11.3 milles) NE of Des Moines, IA (   Estados Unidos de América)
Fase: En ruta (ENR)
Naturaleza:Ferry/Posicionado
Aeropuerto de Salida:Cheyenne Airport, WY (CYS/KCYS), Estados Unidos de América
Aeropuerto de Llegada:Chicago-O'Hare International Airport, IL (ORD/KORD), Estados Unidos de América
Descripción:
The aircraft arrived at Cheyenne, Wyoming at 00:38 on a Civil Air Movement flight from New York International Airport. The aircraft departed Cheyenne at 01:32, on an instrument flight plan to Chicago at 7,000 feet. The C-46 progressed uneventfully until it reached Omaha. The pilot contacted Omaha INSAC and requested a change of altitude to 3,000 feet. This was denied because another flight proceeded at 2,600 feet between Des Moines and Omaha. The aircraft flew then into a severe thunderstorm in the vicinity of Des Moines. The aircraft lost control and subsequently the right wing panel failed at the attach angles to the center section due to a strong downward force which exceeded the design strength of the wing. The wing panel then struck the tail, causing it to disintegrate.

PROBABLE CAUSE: "Separation of the right aileron tab motor from its support bracket due to loss of its outboard trunnion while the aircraft was in the severe turbulence of a thunderstorm. These conditions resulted in a tendency to roll erratically, and in conjunction with the extreme turbulence, caused loss of control and subsequent overloading of the wing to the point of failure."

Fuentes:
» CAB File No. 1-0034
» ICAO Accident Digest Circular 39-AN/34 (80-83)


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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Cheyenne Airport, WY to Chicago-O'Hare International Airport, IL as the crow flies is 1398 km (873 miles).

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