Descripción:The Boeing 707 N7071 was operating on a customer guarantee and acceptance training flight prior to delivery of the plane to Braniff. The plane was being flown by a Braniff captain and a Boeing testpilot as instructor. Other Braniff and Boeing personnel were on board as crew members and observers. A series of Dutch Rolls were performed; one of the rolls was executed beyond the maximum bank restrictions. Control was lost, but the aircraft recovered. During the recovery however, the no. 1, 2 and 4 engines were torn off. An intense fire burned away portions of the jet control near the no. 2 engine attachment area. An emergency descent was carried out and the plane crash-landed along river.
|Fecha:||Thursday 5 December 2013|
|Numéro de série:|| 17691/45|
|Año de Construcción:|| 1959|
|Horas Totales de la Célula:||173|
|Motores:|| 4 Pratt & Whitney JT4A-3|
|Tripulación:||Fatalidades: 4 / Ocupantes: 8|
|Pasajeros:||Fatalidades: 0 / Ocupantes: 0|
|Total:||Fatalidades: 4 / Ocupantes: 8 |
|Daños en la Aeronave:|| Anulado|
|Consecuencias:|| Written off (damaged beyond repair)|
|Ubicación:||16 km (10 milles) NE of Arlington, WA (Estados Unidos de América)
|Fase:|| Maniobras (MNV)|
|Aeropuerto de Salida:||Seattle-Boeing Field International Airport, WA (BFI/KBFI), Estados Unidos de América|
|Aeropuerto de Llegada:||Seattle-Boeing Field International Airport, WA (BFI/KBFI), Estados Unidos de América|
PROBABLE CAUSE: "The structural failure induced during an improper recovery attempt from a Dutch Roll which exceeded the angle-of-bank limits prescribed by the company."
» ICAO Accident Digest, Circular 62-AN/57 (190-194)
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Distance from Seattle-Boeing Field International Airport, WA to Seattle-Boeing Field International Airport, WA as the crow flies is 0 km (0 miles).