Effort to quiet O’Hare night skies working only about half the time: data

A plane headed to O'Hare Airport soars over homes in Edison Park. (Heather Cherone / DNAinfo)

A plane headed to O'Hare Airport soars over homes in Edison Park. (Heather Cherone / DNAinfo)

O’HARE — Planes landed and took off as promised 57 percent of the time during the first eight weeks of a test to rotate the O’Hare Airport runways used at night to give Northwest Side residents some relief from jet noise.

Data released by the Chicago Aviation Department shows that summer storms often prompted air traffic controllers and airport officials to divert planes from the runways that were supposed to keep designated areas quieter.

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About two months into the six-month test period, 67 percent of planes used the primary runway configuration designed to limit landing and takeoff noise in a single week. That high-water mark was achieved the week of Aug. 21-27, according to the data.

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