Federal investigators looking into the cause of the January collision between a passenger jet and an Army helicopter near Washington, D.C., that killed 67 people recommended a ban on some helicopter flights Tuesday,

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 NTSB is urging the FAA to take steps to ensure helicopter traffic is never permitted to cross arrival and departure paths at Reagan Washington National Airport (DCA), eliminating a risk that the board suggests should have been addressed before the Jan. 29 midair collision of a regional jet and a U.S Army helicopter.