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Accident description
Last updated: 21 August 2017
Status:Final
Date:Wednesday 20 December 1972
Time:18:00
Type:Silhouette image of generic DC93 model; specific model in this crash may look slightly different
McDonnell Douglas DC-9-31
Operator:North Central Airlines
Registration: N954N
C/n / msn: 47159/231
First flight: 1968
Total airframe hrs:11812
Engines: 2 Pratt & Whitney JT8D-7
Crew:Fatalities: 0 / Occupants: 4
Passengers:Fatalities: 10 / Occupants: 41
Total:Fatalities: 10 / Occupants: 45
Airplane damage: Damaged beyond repair
Location:Chicago-O'Hare International Airport, IL (ORD) (   United States of America)
Phase: Takeoff (TOF)
Nature:Domestic Scheduled Passenger
Departure airport:Chicago-O'Hare International Airport, IL (ORD/KORD), United States of America
Destination airport:Madison Regional Airport, WI (MSN/KMSN), United States of America
Flightnumber: 575
Narrative:
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:

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"

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 197 days (7 months)
Accident number: NTSB/AAR-73-15
Download report: Final report

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


Follow-up / safety actions

NTSB issued 9 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 Chicago-O'Hare International Airport, IL to Madison Regional Airport, WI as the crow flies is 173 km (108 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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DC-9-30

  • 662 built
  • 12th loss
  • 11th fatal accident
  • 9th worst accident (at the time)
  • 32nd worst accident (currently)
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