Updated: Area flight schedules are returning to normal Tuesday morning after overnight delays caused by a hazmat emergency at the FAA Air Route Traffic Control Center in Leesburg.
Chemical fumes from rooftop repairs entered the building’s ventilation system late Monday afternoon. While controllers inside the Washington Center initially tried to work through the situation, evacuations ultimately lead the FAA to impose ground stops at Dulles, Reagan National and BWI airports to limit flights in the area. The center controls flights over covering flights Delaware, Maryland, West Virginia, Pennsylvania, North Carolina, Virginia and New Jersey.
Although the center returned to normal operations at 9:30 p.m., flight delays and cancellations continued overnight.