Accident description
Last updated: 29 July 2014
Status:Final
Date:Thursday 29 June 1972
Time:10:37
Type:Convair CV-580
Operator:North Central Airlines
Registration: N90858
C/n / msn: 83
First flight: 1953
Total airframe hrs:45905
Engines: 2 Allison 501-D13
Crew:Fatalities: 3 / Occupants: 3
Passengers:Fatalities: 2 / Occupants: 2
Total:Fatalities: 5 / Occupants: 5
Collision casualties:Fatalities: 8
Airplane damage: Damaged beyond repair
Location:ca. 8 km S of Appleton, WI (   United States of America) show on map
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Green Bay-Austin-Straubel Field, WI (GRB/KGRB), United States of America
Destination airport:Oshkosh-Wittman Field, WI (OSH/KOSH), United States of America
Flightnumber: 290
Narrative:
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: "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."

Classification:
Mid air collision
Loss of control

Sources:
» NTSB-AAR-73-9


Follow-up / safety actions

NTSB issued 6 Safety Recommendations

Show all AD's and Safety Recommendations

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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Green Bay-Austin-Straubel Field, WI to Oshkosh-Wittman Field, WI as the crow flies is 65 km (41 miles).

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