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Accident description
Last updated: 20 October 2017
Status:
Date:Thursday 9 December 1993
Time:18:39
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operator:Air Senegal
Registration: 6V-ADE
C/n / msn: 393
First flight: 1973
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 1 / Occupants: 1
Passengers:Fatalities: 2 / Occupants: 2
Total:Fatalities: 3 / Occupants: 3
Airplane damage: Damaged beyond repair
Location:off Dakar-Yoff Airport (DKR) (   Senegal)
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Cap Skirring Airport (CSK/GOGS), Senegal
Destination airport:Dakar-Yoff Airport (DKR/GOOY), Senegal
Narrative:
Air Senegal Twin Otter 6V-ADE was instructed to descend and maintain 3000 feet and report over the Dakar YF VOR. Outbound traffic from Dakar (An YS-11, C5-GAA) was instructed to climb to 2000 feet and intercept the radial 140 of the YF VOR. Failure to respect the assigned altitude caused both planes to collide at 2700-2900 feet. The DHC-6 crashed into the sea, but the NAMC YS-11 managed to return to Dakar.

Classification:
Mid air collision
Loss of control

Sources:
» ICAO Adrep Summary 1/94 (#105)
» Scramble 177


Photos

photo of de Havilland Canada DHC-6 Twin Otter 300 6V-ADE
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Cap Skirring Airport to Dakar-Yoff Airport as the crow flies is 270 km (169 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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