Helicopters will be permanently restricted from flying near Washington, D.C.'s airport on the same route where a passenger jet and an Army helicopter collided in midair, killing 67 people, the Federal Aviation Administration said Friday.

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.