Accident
Last updated: 23 May 2013
| Statuts: | Enquête Officielle |
| Date: | 19 OCT 1959 |
| Heure: | 16:20 |
| Type/Sous-type: | Boeing 707-227 |
| Compagnie: | Boeing |
| Immatriculation: | N7071 |
| Numéro de série: | 17691/45 |
| Année de Fabrication: | 1959 |
| Heures de vol: | 173 |
| Moteurs: | 4 Pratt & Whitney JT4A-3 |
| Equipage: | victimes: 4 / à bord: 8 |
| Passagers: | victimes: 0 / à bord: 0 |
| Total: | victimes: 4 / à bord: 8 |
| Dégats de l'appareil: | Perte Totale |
| Conséquences: | Written off (damaged beyond repair) |
| Lieu de l'accident: | 16 km (10 milles) NE of Arlington, WA (Etats-Unis d'Amérique)
 |
| Phase de vol: | En cours de manoeuvre (MNV) |
| Nature: | Entrainement |
| Aéroport de départ: | Seattle-Boeing Field International Airport, WA (BFI/KBFI), Etats-Unis d'Amérique |
| Seattle-Boeing Field International Airport, WA (BFI/KBFI), Etats-Unis d'Amérique |
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: "The structural failure induced during an improper recovery attempt from a Dutch Roll which exceeded the angle-of-bank limits prescribed by the company." Sources:
» ICAO Accident Digest, Circular 62-AN/57 (190-194)
Photos
Plan
Ce plan montre l'aéroport de départ ainsi que la supposé destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Seattle-Boeing Field International Airport, WA et Seattle-Boeing Field International Airport, WA est de 0 km (0 miles).
La distance entre Seattle-Boeing Field International Airport, WA et Seattle-Boeing Field International Airport, WA est de 0 km (0 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 tels qui sont connus à ce jour.
