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Last updated: 28 November 2020
Statuts:Enquête Officielle
Date:vendredi 6 mars 2020
Heure:11:15
Type/Sous-type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Vistaliner 300
Compagnie:Grand Canyon Airlines
Immatriculation: N72GC
Numéro de série: 264
Année de Fabrication: 1969
Heures de vol:50964
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 2
Dégats de l'appareil: Substantiels
Lieu de l'accident:Boulder City Municipal Airport, NV (BLD) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Entrainement
Aéroport de départ:Boulder City Municipal Airport, NV (BLD/KBVU), Etats-Unis d'Amérique
Aéroport de destination:Boulder City Municipal Airport, NV (BLD/KBVU), Etats-Unis d'Amérique
Détails:
An operator's pilot was conducting training for a newly hired pilot for a first officer position in the twin-engine airplane. After accomplishing air work, the pilots returned to the airport to practice landings and takeoffs. According to both pilots, the first approach was normal, and the airplane touched down slightly right of the runway centerline. The trainee pilot stated that, after touchdown, the airplane began drifting further right and that he was unable to correct the deviation. The trainer pilot reported that, when directional control became unstable, he told the trainee, "I have the controls." The trainer pilot saw that the trainee pilot released his hands from the engine power levers and the yoke, but the airplane continued to deviate to the right, contrary to his control inputs and his addition of asymmetric power to the engines. The trainer pilot realized that, based on his inputs, the airplane should have returned to the centerline but that it did not and that it was behaving as if the trainee pilot was applying some braking. At that point, the trainer pilot again told the trainee pilot to release the controls, and he used the brakes, which he reported applied and released normally. Subsequently, the airplane exited the right side of the runway and impacted a ditch. The airplane sustained substantial damage to the right wing. The trainer pilot and the operator reported that there were no mechanical failures or malfunctions with the airplane that would have precluded normal operation. The trainer pilot reported that he believed the trainee pilot's feet were either on the brakes or interfered with his brake and/or rudder application attempts. The trainee pilot reported that he could not recall the position of his feet after he relinquished airplane control to the trainer pilot.

Probable Cause:

Probable Cause: The trainee pilot's loss of directional control during landing and his subsequent unintentional control interference with the brakes and/or rudder during the trainer pilot's attempted remedial action, which resulted in a runway excursion and collision with a ditch.

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 150 days (5 months)
Accident number: WPR20CA112
Download report: Summary report


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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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