Circuit Board Overheating Caused Strong Chemical Smell That Impeded Work Of Air Traffic Controllers Four airports serving Washington, D.C., Baltimore and Richmond, Virg., stopped all flights Friday evening for more than an hour. The ground stop affected Ronald Reagan Washington National Airport, Washington Dulles International Airport, Baltimore-Washington International Airport and Richmond International Airport, FAA Secretary Sean Duffy announced on social media Friday. The smell was coming from Potomac TRACON, Duffy wrote, referring to a terminal radar approach-control facility that manages air traffic for the Washington, D.C., Baltimore, Richmond, and the Richmond-Charlottesville areas, according to the FAA website.
