Accident
Last updated: 22 December 2014
Status:Definitief
Datum:woensdag 20 december 1972
Tijd:18:00
Type:Silhouette image of generic DC93 model; specific model in this crash may look slightly different
McDonnell Douglas DC-9-31
Luchtvaartmaatschappij:North Central Airlines
Registratie: N954N
Constructienummer: 47159/231
Bouwjaar: 1968
Aantal vlieguren:11812
Motoren: 2 Pratt & Whitney JT8D-7
Bemanning:slachtoffers: 0 / inzittenden: 4
Passagiers:slachtoffers: 10 / inzittenden: 41
Totaal:slachtoffers: 10 / inzittenden: 45
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:Chicago-O'Hare International Airport, IL (ORD) (   Verenigde Staten) show on map
Fase: Start (TOF)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Chicago-O'Hare International Airport, IL (ORD/KORD), Verenigde Staten
Vliegveld van aankomst:Madison Regional Airport, WI (MSN/KMSN), Verenigde Staten
Vluchtnummer: 575
Beschrijving:
A Delta Air Lines Convair CV-880 (N8807E) taxied across runway 27L in bad weather (250 feet visibility in fog, indefinite ceiling at 200 feet). At the same time, a North Central DC-9 (N954N) took off from runway 27L. Both aircraft collided.

PROBABLE CAUSE: "The failure of the air traffic control system to ensure separation of aircraft during a period of restricted visibility. This failure included the following: (1) the controller omitted a critical word which made his transmission to the flight crew of the Delta CV-880 ambiguous; (2) the controller did not use all the available information to determine the location of the CV-880; and (3) the CV-880 flight crew did not request clarification of the controller's communications"

Bronnen:
» ICAO Circular 132-AN/93 (27-36)
» NTSB/AAR-73/15

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB/AAR-73-15
report released:05-JUL-1973
duration of investigation:197 days (6.6 months)
download report: North Central Airlines, Inc., McDonnell Douglas DC-9-31, N954N and Delta Air Lines, Inc., Convair CV-880, N8807E, O'Hare Intl Arpt. Chicago, IL 12-20-72 (NTSB/AAR-73-15)
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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 Madison Regional Airport, WI bedraagt 173 km (108 miles).

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