Air Traffic Control at Chicago O'Hare International Airport

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The National Transportation Safety Board continues to investigate two near-midair collisions at Chicago O'Hare International Airport. The investigation focuses not just on air traffic controller error, but the control tower configuration and dual intersecting runways.

Transportation expert Joseph Schwieterman quotes: “My takeaway is that O’Hare — despite improvements over the years — still has a lot of older features that can create incidents,” he said. “It is still a highly complicated airport — with intersections that are potential problem spots.”