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Accident
Last updated: 21 October 2017
Statuts:Enquête Officielle
Date:mardi 3 février 1959
Heure:22:05 UTC
Type/Sous-type:Silhouette image of generic B701 model; specific model in this crash may look slightly different
Boeing 707-121
Compagnie:Pan American World Airways (Pan Am)
Immatriculation: N712PA
Numéro de série: 17591/6
Année de Fabrication: 1958-10-13 (4 months)
Heures de vol:705
Moteurs: 4 Pratt & Whitney JT3C-6
Equipage:victimes: 0 / à bord: 10
Passagers:victimes: 0 / à bord: 119
Total:victimes: 0 / à bord: 129
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:au dessus de Atlantic Ocean (   Océan Atlantique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Intern.
Aéroport de départ:London-Heathrow Airport (LHR/EGLL), Royaume Uni
Aéroport de destination:Gander Airport, NF (YQX/CYQX), Canada
Numéro de vol:PA115
Détails:
Pan American Flight 115 was a scheduled flight between Paris, France, and New York, USA with intermediate stops planned at London, England, and Gander, Canada.
The aircraft was flying at an altitude of 35,000 feet in smooth air with the autopilot engaged when the captain left the cockpit and entered the main cabin. During his absence the autopilot disengaged and the aircraft smoothly and slowly entered a steep descending spiral. The copilot was not properly monitoring the aircraft's instruments or the progress of the flight and was unaware of the actions of the aircraft until considerable speed had been gained and altitude lost. During the rapid descent the copilot was unable to effect recovery. When the captain became aware of the unusual attitude of the aircraft he returned to the cockpit and with the aid of the other crew members was finally able to regain control of the aircraft. Recovery was made at an altitude of approximately 6,000 feet.
Following recovery the aircraft was flown to Gander, Newfoundland, where a safe landing was made.

Probable Cause:

Probable Cause:
The Board determines that the probable cause of this accident was the inattention of the copilot to the progress of the flight, during the absence of the captain from the cockpit, following the involuntary disengagement of the autopilot. Contributing
factors were the autopilot disengage warning light in the dim position and the Mach trim switch in the "off"-position.

Accident investigation:
cover
Investigating agency: CAB
Status: Investigation completed
Duration: 273 days (9 months)
Accident number: File 1-006
Download report: Final report


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Plan
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 London-Heathrow Airport et Gander Airport, NF est de 3745 km (2341 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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