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CHARLOTTE, N.C. (AP) -- Charlotte Douglas International Airport has reopened its fourth runway after a review ordered by the Federal Aviation Administration.

The Charlotte Observer reported (http://bit.ly/1fEK0YH) the reopening of the airport's shortest runway comes after the FAA had ordered it closed because of safety concerns.

The runway is used mostly for landings and to cut down on noise in surrounding neighborhoods since its flight path is mostly aligned with the Interstate 85 corridor.

The FAA closed the runway in August because of concerns that planes using the runway might cross paths with aircraft on the center runway.

The runways do not cross, but their flight paths do intersect.

The FAA said there are now increased safety measures in place to make sure that planes do not get in each other's way.

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