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Last updated: 6 December 2019
Statuts:Enquête Officielle
Date:jeudi 29 juin 1972
Heure:10:37
Type/Sous-type:Silhouette image of generic CVLT model; specific model in this crash may look slightly different
Convair CV-580
Compagnie:North Central Airlines
Immatriculation: N90858
Numéro de série: 83
Année de Fabrication: 1953
Heures de vol:45905
Moteurs: 2 Allison 501-D13
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 2 / à bord: 2
Total:victimes: 5 / à bord: 5
Victime de la collision:victimes: 8
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:ca. 8 km S of Appleton, WI (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Green Bay-Austin-Straubel Field, WI (GRB/KGRB), Etats-Unis d'Amérique
Aéroport de destination:Oshkosh-Wittman Field, WI (OSH/KOSH), Etats-Unis d'Amérique
Numéro de vol: 290
Détails:
North Central Flight 290, a Convair CV-580 departed Green Bay (GRB) at 10:30 for a flight to Oshkosh (OSH), Milwaukee (MKE) and Chicago. The aircraft climbed to 2,500 feet and proceeded on an approximate course to Oshkosh. At 10:35 the flight made its initial contact with Oshkosh tower stating, "...we're about, seven northeast, two thousand five hundred, VFR." The crew were cleared for a runway 27 landing at 10:36. At that same time, an Air Wisconsin Twin Otter turboprop plane was on its way from Sheboygan (SBM) to Appleton (ATW) at the same altitude. An in-flight collision occurred at 10:36:47 over Lake Winnebago, at an altitude of approximately 2,500 feet. Explosion and fire followed the and both aircraft fell into Lake Winnebago. The accident occurred in hazy sunlight below a scattered cloud layer.

Probable Cause:

PROBABLE CAUSE: "The failure of both flight crews to detect visually the other aircraft in sufficient time to initiate evasive action. the Board is unable to determine why each crew failed to see and avoid the other aircraft; however, the Board believes that the ability of both crews to detect the other aircraft in time to avoid a collision was reduced because of the atmospheric conditions and human visual limitations."

Sources:
» NTSB-AAR-73-9


Opérations de secours

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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 Green Bay-Austin-Straubel Field, WI et Oshkosh-Wittman Field, WI est de 65 km (41 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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