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Accident
Last updated: 24 October 2017
Status:Definitief
Datum:woensdag 4 december 1940
Tijd:17:48
Type:Silhouette image of generic DC3 model; specific model in this crash may look slightly different
Douglas DC-3A-197C
Luchtvaartmaatschappij:United Air Lines
Registratie: NC25678
Constructienummer: 2175
Bouwjaar: 1940
Aantal vlieguren:2456
Bemanning:slachtoffers: 3 / inzittenden: 3
Passagiers:slachtoffers: 7 / inzittenden: 13
Totaal:slachtoffers: 10 / inzittenden: 16
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:0,5 km (0.3 mijl) SW of Chicago Municipal Airport, IL (MDW) (   Verenigde Staten)
Fase: Nadering (APR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:New York-La Guardia Airport, NY (LGA/KLGA), Verenigde Staten
Vliegveld van aankomst:Chicago Municipal Airport, IL (MDW/KMDW), Verenigde Staten
Vluchtnummer: 21
Beschrijving:
A Douglas DC-3A passenger plane, NC25678, was destroyed in an accident near Chicago Municipal Airport, IL (MDW), U.S.A. All three crew members and seven of the 13 passengers were killed.
The airplane operated on a flight from New York-La Guardia Airport, NY (LGA) to Chicago Municipal Airport, IL (MDW) with en route stops at Philadelphia, PA, Allentown, PA, Akron, OH and Cleveland, OH.
The airplane descended through the overcast near Chicago Municipal Airport and the pilot reported they would have to circle the airport to clear his windshield of ice, which impaired his vision.
After clearing the windshield the pilot decided to land on the northwest runway. At an altitude of approximately 160 feet, the airplane stalled, fell off to the left, and crashed while in an incipient spin. The accumulation of ice on the leading edges of the wing had raised the stall speed.

Probable Cause:

PROBABLE CAUSE: "Upon the basis of the foregoing findings of fact and upon all the evidence available at this time, we find that the probable cause of the accident aircraft NC25678 (United 21) on December 4, 1940, was the failure of the pilot to exercise that degree of caution and skill required to avert a stall while approaching for a landing on the short northwest runway. A substantial contributing factor to the accident was the error in judgement of Captain Scott in choosing that short runway for his landing."

Bronnen:
» Chicago Tribune, 5 December 1940
» Chicago Tribune, 6 December 1940


Foto's

photo of Douglas DC-3A-197C NC25678
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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 Chicago Municipal Airport, IL bedraagt 1156 km (722 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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