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Accident
Last updated: 13 December 2017
Statuts:Enquête Officielle
Date:mardi 30 mai 1961
Heure:01:20 UTC
Type/Sous-type:Silhouette image of generic DC85 model; specific model in this crash may look slightly different
Douglas DC-8-53
Opérant pour:VIASA
Loué à :KLM Royal Dutch Airlines
Immatriculation: PH-DCL
Numéro de série: 45615/131
Année de Fabrication: 1961
Heures de vol:209
Cycles:82
Moteurs: 4 Pratt & Whitney JT3D-1
Equipage:victimes: 14 / à bord: 14
Passagers:victimes: 47 / à bord: 47
Total:victimes: 61 / à bord: 61
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:3 km (1.9 milles) ENE de Fonte da Telha (   Portugal)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Intern.
Aéroport de départ:Lisboa-Portela de Sacavém Airport (LIS/LPPT), Portugal
Aéroport de destination:Santa Maria-Vila do Porto Airport, Azores (SMA/LPAZ), Portugal
Numéro de vol: 897
Détails:
VIASA Flight 897 operated on the route Rome - Madrid (MAD) - Lisbon (LIS) - Santa Maria (SMA) - Caracas (CCS) when it landed at Lisbon at 00:06 UTC. Following a crew change and inspection by KLM maintenance personnel the flight was cleared for a runway 23 departure. The DC-8 took off at 01:15, heading the Capiraca (LS) NDB. At 01:18:37 the aircraft advised that the cloud base was at 3700 ft and changed to the Lisbon area control frequency. It reported again at 01:19 :25 to Lisbon Control that it was "over LS at 19 climbing through FL 60". This message ended with two quickly spoken sentences. This was the last radio contact with the flight. The DC-8 entered a spiral dive to the left during the last message, banking to the left to 90° within about 20 seconds and striking the water after another 15 seconds . During the last 15 seconds, the bank was overcorrected to the right. It struck the sea with a pitch angle of approximately 25° nose down, while it was probably banking 30° to the right.

Probable Cause:

PROBABLE CAUSE: "Notwithstanding a very thorough, time-consuming investigation, in which many authorities and experts co-operated, it was not possible to establish a probable cause of the accident."
The Netherlands, as state of registry commented: "Though there are no direct indications in this respect, the Board regards it as possible that the accident was due to the pilot or pilots being misled by instrument failure, in particular of the artificial horizon, or to the pilot having been distracted, so that a serious deviation from
the normal .flight path was not discovered in time ."

Sources:
» ICAO Circular 69-AN/61


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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 Lisboa-Portela de Sacavém Airport et Santa Maria-Vila do Porto Airport, Azores est de 1410 km (881 miles).
Accident location: Exact; deduced from official accident report.

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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