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Last updated: 5 April 2020
Statuts:Enquête Officielle
Date:mercredi 23 janvier 2019
Type/Sous-type:Silhouette image of generic DH8A model; specific model in this crash may look slightly different
de Havilland Canada DHC-8-102 Dash 8
Compagnie:Air Creebec
Immatriculation: C-GTCO
Numéro de série: 119
Année de Fabrication: 1988-09-30 (30 years 4 months)
Heures de vol:43522
Moteurs: 2 Pratt & Whitney Canada PW120A
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 0 / à bord: 6
Total:victimes: 0 / à bord: 9
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Rouyn Airport, QC (YUY) (   Canada)
Phase de vol: Au décollage (TOF)
Nature:Transport de Passagers Nat.
Aéroport de départ:Rouyn Airport, QC (YUY/CYUY), Canada
Aéroport de destination:Montreal-Pierre Elliott Trudeau International Airport, QC (YUL/CYUL), Canada
Numéro de vol:YN926
A DHC-8-102 aircraft operated by Air Creebec, was on an instrument flight rules flight 926 from Rouyn-Noranda (CYUY) to Montréal/Pierre Elliott Trudeau Intl (CYUL) with 3 crew members and 6 passengers on board. During the take-off run from runway 26 at CYUY, the aircraft began to veer to the left. It continued to do so until the left main landing gear rolled off the surface of the runway and hit a snow windrow 5 feet beyond the edge of the runway. The aircraft continued to veer to the left and came to rest in a compacted snowbank 40 feet from the runway. One of the passengers received minor injuries. The aircraft sustained substantial damage to the fuselage, landing gear, and propellers. The accident occurred during the hours of darkness, when visibility was reduced to approximately 2 statute miles in snow showers.

Probable Cause:

Findings as to causes and contributing factors:
1. The pilot flying did not look far enough ahead for long enough to notice that the aircraft was deviating to the left before veering off the runway.
2. Given that the pilot monitoring was not looking out the window to monitor the aircraft’s path, he did not notice the deviation and was therefore unable to help the pilot flying correct the deviation in the path during the take-off roll.
3. The strong authority gradient between the pilots reduced the effectiveness of monitoring, which resulted in a failure to detect and correct the deviation from the departure path.
4. During the takeoff-rejection procedure, the pilot flying accidentally caught the right engine power lever with his finger, pushing the lever completely forward, and placed only the left lever in the idle position, which produced a significant dissymmetry in the torque and accentuated the deviation from the path, resulting in the runway excursion.
5. Since the pilot flying was able to place only 1 power lever in the idle position, it is highly likely that he did not have his right hand on the levers, contrary to what is stated in the standard operating procedures. Consequently, he was not ready to quickly and safely reject the takeoff.

Accident investigation:
Investigating agency: TSB Canada
Status: Investigation completed
Duration: 1 year and 2 months
Accident number: A19Q0010
Download report: Final report

» TSB A19Q0010


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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 Rouyn Airport, QC et Montreal-Pierre Elliott Trudeau International Airport, QC est de 489 km (306 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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