Crash-aerien 01 MAR 1970 d'un Vickers 757 Viscount CF-THY - Vancouver International Airport, BC (YVR)
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Statuts:Accident investigation report completed and information captured
Date:dimanche 1 mars 1970
Type/Sous-type:Silhouette image of generic VISC model; specific model in this crash may look slightly different
Vickers 757 Viscount
Compagnie:Air Canada
Immatriculation: CF-THY
Numéro de série: 307
Année de Fabrication: 1958-04-23 (11 years 11 months)
Moteurs: 4 Rolls-Royce Dart 506
Equipage:victimes: 0 / à bord: 4
Passagers:victimes: 0 / à bord: 29
Total:victimes: 0 / à bord: 33
Victime de la collision:victimes: 1
Dégats de l'appareil: Mineurs
Conséquences: Repaired
Lieu de l'accident:6,5 km (4.1 milles) S of Vancouver International Airport, BC (YVR) (   Canada)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Victoria International Airport, BC (YYJ/CYYJ), Canada
Aéroport de destination:Vancouver International Airport, BC (YVR/CYVR), Canada
Numéro de vol:AC106
Air Canada flight 106 departed from Victoria, BC, Canada at 13:18 en route to Vancouver International Airport. At 13:26 the pilots cancelled their IFR flight plan but remained on the arrival frequency for radar surveillance. While nearing destination in clear weather in a VFR descent of 500 feet per minute, and 180 knots, the pilots were informed by arrival control that there was an aircraft at 12 o'clock at one mile, moving from left to right. They looked intently but were unable to see the aircraft; radar then reported that the target had disappeared and directed a frequency change to tower. The pilots of the Viscount resumed their pre-landing cockpit duties and a few seconds later they felt a slight jar as the Viscount collided with a white ERCO 415 Ercoupe, registration CF-SHN, at approximately 1500 feet asl. Witnesses to the collision saw a small white aircraft spiralling to the ground. The pilot suffered fatal injuries. The Viscount landed safely with minor damage to an engine nacelle.

Vancouver International Airport positive control zone extended five miles from the airport. Aircraft flying within this zone are required to maintain two-way radio contact with the control tower. A NOTAM in effect at the time of the accident requested that pilots flying VFR outside the control zone but within a 10 mile radius of the airport remain at or below 1500 feet asl, unless otherwise cleared by The 'see-and-be-seen' concept, although augmented by radar, was ineffective.

Probable Cause:

PROBABLE CAUSE: "The see-and-be-seen concept, although augmented by radar, was ineffective. The procedures to ensure safe separation of mixed traffic in the Vancouver area are obsolescent."

» The Montreal Gazette - Mar 2, 1970
» Aircraft Accident Report


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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 Victoria International Airport, BC et Vancouver International Airport, BC est de 63 km (39 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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