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Accident
Last updated: 21 October 2017
Status:Definitief
Datum:zondag 4 augustus 1968
Tijd:09:48
Type:Silhouette image of generic CVLT model; specific model in this crash may look slightly different
Convair CV-580
Luchtvaartmaatschappij:North Central Airlines
Registratie: N4634S
Constructienummer: 176
Bouwjaar: 1958
Aantal vlieguren:25219
Bemanning:slachtoffers: 0 / inzittenden: 3
Passagiers:slachtoffers: 0 / inzittenden: 8
Totaal:slachtoffers: 0 / inzittenden: 11
Botsingsslachtoffers:slachtoffers: 3
Schade: Groot
Gevolgen: Repaired
Plaats:18 km (11.3 mijl) SW of Milwaukee, WI (   Verenigde Staten)
Fase: Nadering (APR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Chicago-O'Hare International Airport, IL (ORD/KORD), Verenigde Staten
Vliegveld van aankomst:Milwaukee-General Mitchell Airport, WI (MKE/KMKE), Verenigde Staten
Vluchtnummer: 261
Beschrijving:
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."



Veiligheidsmaatregelen

NTSB issued 1 Safety Recommendation

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Foto's

photo of Convair CV-580 N4634S
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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Chicago-O'Hare International Airport, IL en Milwaukee-General Mitchell Airport, WI bedraagt 107 km (67 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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