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Accident
Last updated: 13 December 2017
Statuts:Enquête Officielle
Date:dimanche 4 août 1968
Heure:09:48
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: N4634S
Numéro de série: 176
Année de Fabrication: 1958
Heures de vol:25219
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 0 / à bord: 8
Total:victimes: 0 / à bord: 11
Victime de la collision:victimes: 3
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:18 km (11.3 milles) SW of Milwaukee, WI (   Etats-Unis d'Amérique)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Chicago-O'Hare International Airport, IL (ORD/KORD), Etats-Unis d'Amérique
Aéroport de destination:Milwaukee-General Mitchell Airport, WI (MKE/KMKE), Etats-Unis d'Amérique
Numéro de vol: 261
Détails:
North Central flight 261, a CV-580, collided in mid-air with Cessna 150 N8742S (Home Airmotive) at 2700 feet. The Cessna cabin remained attached to the Convair's forward baggage compartment. The Convair made a safe emergency landing at Milwaukee. The 3 Cessna occupants were killed. The Cessna was on a VFR flight from Lombard, IL to Sheboygan, WI.

Probable Cause:

PROBABLE CAUSE: "The inability of the Convair 580 flight crew to detect the Cessna 150 visually in sufficient time to take evasive action, despite having been provided with three radar traffic advisories concerning the latter aircraft. Visual detection capabilities were substantially reduced by the heavy accumulation of insect smears on the forward windshield and direct vision windows of the Convair. Visibility was further reduced by haze, smoke and sunglare, and by the inconspicuous colour and lack of relative motion of the Cessna. Under these circumstances, the crew of the Convair should have requested a radar avoidance vector."



Opérations de secours

NTSB issued 1 Safety Recommendation

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Photos

photo of Convair CV-580 N4634S
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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 Chicago-O'Hare International Airport, IL et Milwaukee-General Mitchell Airport, WI est de 107 km (67 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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