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Statuts:Enquête Officielle
Date:vendredi 18 mars 1994
Type/Sous-type:Silhouette image of generic DC3 model; specific model in this crash may look slightly different
Douglas DC-3C
Immatriculation: N3433Y
Numéro de série: 43089
Année de Fabrication: 1943
Heures de vol:37190
Moteurs: 2 Pratt & Whitney R-1830-92
Equipage:victimes: 2 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 2 / à bord: 2
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:1 km (0.6 milles) SW of Spokane International Airport, WA (GEG) (   Etats-Unis d'Amérique)
Phase de vol: En montée initiale (ICL)
Aéroport de départ:Spokane International Airport, WA (GEG/KGEG), Etats-Unis d'Amérique
Aéroport de destination:Portland International Airport, OR (PDX/KPDX), Etats-Unis d'Amérique
Numéro de vol:2991
On February 21, 1994, the right engine of N3433Y experienced a misfire and loss of power while on final approach to Spokane, WA. The airplane was grounded for maintenance and the right engine was removed and replaced with an overhauled engine from Precision Airmotive. Precision Airmotive reported that the overhaul was completed and approved for service on December 20, 1993 and preserved for short term storage. Prior to the overhaul the engine had been on the shelf in long term storage.
At the time of the accident, the operator reported that the engine had accumulated a total time of 15 hours since the overhaul.
On March 18, 01:53 hours, the captain reported to the Spokane controller that the flight was ready for takeoff on runway 21. The controller instructed the flight to, after takeoff, fly a heading of 215 degrees to Portland, and it was cleared for takeoff. Shortly after takeoff the crew were forced to shut down the right engine because of a failure. They tried to return to the airport but the plane collided with the terrain in an open level field located 3,450 feet from the end of runway 21 and 900 feet to the right of runway centerline. The airplane was lying on its belly, with the main landing gear retracted. The entire fuselage and cargo, cockpit, and inboard section of both wings was consumed by fire.

Probable Cause:

PROBABLE CAUSE: "The failure of the pilot-in-command to maintain airspeed. Factors to the accident were: cylinder fatigue, dark night and stall encountered."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 259 days (9 months)
Accident number: SEA94FA085
Download report: Summary report
Language: English

» Air Safety Week 25 April 1994 (p. 10)
» Flight International 20-26 July 94
» ICAO Adrep Summary 2/94 (#17)


photo of Douglas-DC-3C-N3433Y
accident date: 18-03-1994
type: Douglas DC-3C
registration: N3433Y

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 Spokane International Airport, WA et Portland International Airport, OR est de 445 km (278 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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