The Federal Aviation Administration says helicopters will be permanently banned from flying near Washington, D.C.’s airport on the route where an airliner and an Army helicopter collided in midair.

U.S. Transportation Secretary Sean Duffy on Tuesday said the agency will make permanent restrictions to prevent helicopters from flying near Washington Reagan National Airport when two lesser-used runways are operational,

The January mid-air collision with the Army helicopter happened as the American Airlines jet was about to land at Ronald Reagan Washington National Airport. All 67 people on both aircraft died.