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.

The closure of the helicopter route near the airport makes permanent the restrictions put in place after Jan. 29 midair collision.

The Federal Aviation Administration said on Friday it is imposing permanent restrictions on non-essential helicopter operations around Washington's Reagan National Airport and eliminating helicopter and passenger jet mixed traffic.