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Accident
Last updated: 17 October 2017
Statuts:Enquête Officielle
Date:mardi 7 mars 1950
Heure:20:59
Type/Sous-type:Martin 2-0-2
Compagnie:Northwest Orient Airlines
Immatriculation: NC93050
Numéro de série: 9134
Année de Fabrication: 1948
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 10 / à bord: 10
Total:victimes: 13 / à bord: 13
Victimes au sol:victimes: 2
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:5 km (3.1 milles) NW of Minneapolis-St. Paul International Airport, MN (MSP) (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Madison Regional Airport, WI (MSN/KMSN), Etats-Unis d'Amérique
Aéroport de destination:Minneapolis-St. Paul International Airport/Wold-Chamberlain Field, MN (MSP/KMSP), Etats-Unis d'Amérique
Numéro de vol: 307
Détails:
Northwest Flight 307 originated in Washington at 12:30 destined for Winnipeg, Canada. Scheduled intermediate stops included Detroit, Madison, Rochester and Minneapolis. Flight 307 arrived over Rochester at 20:23, and because there was light freezing rain, did not land and continued to Minneapolis. At 20:41
the tower advised Flight 307 of existing, weather conditions: a precipitation ceiling of 900 feet, visibility variable 1/2 to 3/4 of a mile, and the wind from the north at 27 mph with gusts up to 40 mph. The tower informed the flight that there had been two electric power failures at the field, and that if no further communication were received from the tower, it would be in all probability the result of another power failure. After reporting over the outer marker, which was 4.7 miles south of the approach end of runway 35, the Martin was cleared to land. The approach was probably flown visually and the airplane descended below the ILS glide path. At a height of 70 feet the airplane struck a flagpole near the entrance of the National Soldiers Cemetery. This pole, probably obscured by snow, was 4,180 feet south of the approach end of runway 35 and 650 feet west of the center line of that runway. From this point the Martin turned left, passing over the airport control tower which was located 1.6 miles north of the flagpole. The aircraft then flew northwesterly 3.8 miles where the left wing section became totally separated from the aircraft and dropped to the foot of Washburn Park water tower. Then the aircraft progressed westerly an additional 2,640 feet before striking the residence located at 1116 West Minnehaha Highway. A fire which started immediately after the crash consumed the house and much of the aircraft wreckage. Two of the occupants of the house were killed.

Probable Cause:

PROBABLE CAUSE: "The attempt to complete a landing approach by visual means during which time visual reference to the ground was lost."

Sources:
» CAB File No. 1-0031


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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 Madison Regional Airport, WI et Minneapolis-St. Paul International Airport/Wold-Chamberlain Field, MN est de 363 km (227 miles).
Accident location: Exact; deduced from official accident report.

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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