Accident
Last updated: 20 April 2014
Status:Definitief
Datum:vrijdag 23 juni 1950
Tijd:23:25 CST
Type:Silhouette image of generic DC4 model; specific model in this crash may look slightly different
Douglas DC-4
Luchtvaartmaatschappij:Northwest Orient Airlines
Registratie: N95425
Constructienummer: 10270
Bouwjaar: 1943
Aantal vlieguren:15902
Motoren: 4 Pratt & Whitney 2SD13-G
Bemanning:slachtoffers: 3 / inzittenden: 3
Passagiers:slachtoffers: 55 / inzittenden: 55
Totaal:slachtoffers: 58 / inzittenden: 58
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:29 km (18.1 mijl) NNW van Benton Harbour, MI [Lake Michigan] (   Verenigde Staten) show on map
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:New York-La Guardia Airport, NY (LGA/KLGA), Verenigde Staten
Vliegveld van aankomst:Minneapolis-St. Paul International Airport, MN (MSP/KMSP), Verenigde Staten
Vluchtnummer:2501
Beschrijving:
Northwest flight 2501, was scheduled to operate between New York and Seattle via Minneapolis and Spokane.
At approximately 19:31 the flight departed from LaGuardia Airport. At 21:49, when over Cleveland a cruising altitude of 4,000 feet was requested by the flight and approved by ARTC. Forty minutes later the flight was requested by ARTC to descend to 3,500 feet because there was an eastbound flight at 5,000 feet over Lake Michigan which was experiencing severe turbulence and difficulty in maintaining its assigned altitude. ARTC estimated that the standard separation of 1,000 feet would not be sufficient because of the turbulence. At 22:51, Flight 2501 reported that it was over Battle Creek at 3,500 feet, and that it would be over Milwaukee at 23:37. When in the vicinity of Benton Harbor, at 23:13, the flight requested a cruising altitude of 2,500 feet, however, no reason was given for the request. Acknowledgement that ARTC could not approve descent to 2,500 feet was received at 23:15, and this was the last communication received from the flight. An intensive search of the Lake Michigan area was commenced at daylight June 24. On the following day, at 18:30, a United States Coast Guard cutter found an oil slick, and aircraft debris in Lake Michigan approximately 18 miles north-northwest of Benton Harbor. At the time the aircraft crashed, it was flying through an area of considerable thunderstorm activity. The crew knew about the thunderstorm activity and the possible development of a squall line forecast of a squall line, but had not been given a forecast describing the development and location of a squall line that had been issued 100 minutes before the accident.


PROBABLE CAUSE: "Insufficient evidence upon which to make a determination of probable cause."

Bronnen:
» CAB File No. 1-0081


Foto's

photo of Douglas DC-4 N95425
Northwest Flight 2501 crash memorial
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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 New York-La Guardia Airport, NY en Minneapolis-St. Paul International Airport, MN bedraagt 1626 km (1017 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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Douglas DC-4

  • 125e ongeval
  • 1242+ built
  • zwaarste ongeval (toen het plaatsvond)
  • 10e zwaarste ongeval (op dit moment)
safety profile

 Verenigde Staten
  • zwaarste ongeval (toen het plaatsvond)
  • 48e zwaarste ongeval (op dit moment)
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