Ginger Evans was picked by Mayor Rahm Emanuel to lead the Chicago Department of Aviation.
The change would have a "negligible" impact on the ability of planes to use the runway, officials said.
A study will determine how much jet noise actually impacts those who live in the flight path.
"Obviously, the level of frustration is high," the chairwoman of the O'Hare noise comssion said.
The reconstruction is part of a $2.5 billion project to rebuild and widen the Jane Addams Expy.
Mayor Emanuel asked federal officials to double the number of public meetings about a new O'Hare runway.
Two bills pending in the Illinois House are designed to reduce jet noise over the Far Northwest Side.
Jesus "Chuy" Garcia tried to capitalize on anger about jet noise to win over voters in four wards.
That plan could include shelving a plan to tear up diagonal runways, according to the mayor's office.
Complaints rose 20 percent in January, according to data released by a city commission.
Complaints rose 7 percent in December, according to data released by a city commission.
The free app is designed to make it easier to register a complaint, its creator said.
The project includes $25 million to rehabilitate the Jefferson Park Transit Center, officials said.
The number of guns confiscated nationwide hit an all-time high in 2014.
Jim Sacluti, 38, of Sauganash, was arrested at O'Hare Airport in connection with a 2013 investigation.
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