Vliegtuigongeval op 19 OCT 1959 met Boeing 707-227 N7071 - Arlington, WA
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Status:Accident investigation report completed and information captured
Datum:maandag 19 oktober 1959
Tijd:16:20
Type:Boeing 707-227
Luchtvaartmaatschappij:Boeing
Registratie: N7071
Constructienummer: 17691/45
Bouwjaar: 1959-06-11 (4 months)
Aantal vlieguren:173
Motoren: 4 Pratt & Whitney JT4A-3
Bemanning:slachtoffers: 4 / inzittenden: 8
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 4 / inzittenden: 8
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:16 km (10 mijl) NE of Arlington, WA (   Verenigde Staten)
Fase: Manoeuvreren (MNV)
Soort vlucht:Training
Vliegveld van vertrek:Seattle-Boeing Field International Airport, WA (BFI/KBFI), Verenigde Staten
Vliegveld van aankomst:Seattle-Boeing Field International Airport, WA (BFI/KBFI), Verenigde Staten
Beschrijving:
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.

Probable Cause:

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."

Accident investigation:

cover
Investigating agency: CAB
Status: Investigation completed
Accident number: final report
Download report: Final report

Bronnen:
» ICAO Accident Digest, Circular 62-AN/57 (190-194)


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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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