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Last updated: 8 December 2021
Statuts:Enquête Officielle
Date:jeudi 10 mars 2011
Type/Sous-type:Silhouette image of generic SW4 model; specific model in this crash may look slightly different
Swearingen SA227-AC Metro III
Immatriculation: N671AV
Numéro de série: AC-671
Année de Fabrication: 1987
Heures de vol:21847
Moteurs: 2 Garrett TPE331
Equipage:victimes: 0 / à bord: 1
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 1
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Seattle-Boeing Field International Airport, WA (BFI) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Aéroport de départ:Lewiston-Nez Perce County Regional Airport, ID (LWS/KLWS), Etats-Unis d'Amérique
Aéroport de destination:Seattle-Boeing Field International Airport, WA (BFI/KBFI), Etats-Unis d'Amérique
The Fairchild Metro III, N671AV, sustained substantial damage during a gear-up landing at the Seattle-Boeing Field King International Airport, Washington, USA. The commercial pilot, the sole occupant of the airplane, was not injured.
The pilot reported that following two attempts to land in crosswind conditions, he was cleared to land and was instructed by the air traffic control tower controller to follow another airplane on final approach. For spacing considerations, the controller instructed the pilot to conduct "S" turns behind the traffic landing ahead of him. As the airplane descended to an altitude of about 200 feet above ground level, the controller instructed the pilot to go around and maintain altitude. The pilot executed a go-around procedure, which included retracting the landing gear and reducing the flap setting to one-half flaps. Shortly after, the pilot was issued a clearance to land. The pilot proceeded with the landing clearance and subsequently landed with the gear in the retracted position, which resulted in structural damage to the airframe. Postaccident examination of the airplane revealed no mechanical anomalies or failures with the landing gear or landing gear warning system.

Probable Cause:

PROBABLE CAUSE: "The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to extend the landing gear, which resulted in a gear-up landing.

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 6 years and 3 months
Accident number: WPR11FA159
Download report: Final 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 Lewiston-Nez Perce County Regional Airport, ID et Seattle-Boeing Field International Airport, WA est de 418 km (261 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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