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Last updated: 18 October 2019
Statuts:Enquête Officielle
Date:mardi 19 août 1997
Heure:22:21
Type/Sous-type:Silhouette image of generic SW4 model; specific model in this crash may look slightly different
Swearingen SA226-TC Metro II
Compagnie:Superior Aviation
Immatriculation: N224AM
Numéro de série: TC-227
Année de Fabrication: 1977
Heures de vol:51119
Moteurs: 2 Garrett TPE331-10UA
Equipage:victimes: 0 / à bord: 1
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 1
Dégats de l'appareil: Substantiels
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Des Moines Airport, IA (DSM) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Cargo
Aéroport de départ:Wichita-Mid-Continent Airport, KS (ICT/KICT), Etats-Unis d'Amérique
Aéroport de destination:Des Moines Airport, IA (DSM/KDSM), Etats-Unis d'Amérique
Détails:
On approach to land on Des Moines runway 05, it was observed that the right engine control was stuck at the maximum power position. A missed approach was executed and the pilot made a second localizer approach to runway 05. Upon touchdown only the no. 1 engine engaged in Beta Mode while the right engine remained at full power. The pilot felt that directional control was minimal and attempted to go around. no. 1 engine power was increased and as the aircraft rotated, it spun out of control and went off the runway and impacted the localizer antenna. The aircraft was damaged beyond repair and later broken up.

Probable Cause:

PROBABLE CAUSE: "The pilot's improper in-flight planning/decision and failure to perform the emergency procedure for shut-down of the right engine. Factors relating to the accident were: the power lever cable became disconnected from the fuel control unit, due to improper maintenance; and reduced directional control of the airplane, when one engine remained at a high power setting."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 10 months
Accident number: CHI97LA266
Download report: Summary report

Sources:
» NTSB


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Plan
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 Wichita-Mid-Continent Airport, KS et Des Moines Airport, IA est de 536 km (335 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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