CHICAGO – A **** at a suburban Chicago air traffic control facility Friday halted all flights in and out of the city’s two airports.

It was the second time since May that a **** at one of the Chicago area’s major control facilities prompted a ground stop at O’Hare and Midway international airports.

Friday’s **** led to the ********** of the Chicago Air Route Traffic Control Center in Aurora, Federal Aviation Administration spokeswoman Elizabeth Cory said.

One ****** was reported, Cory said.