The Federal Aviation Administration has imposed permanent restrictions on non-essential helicopter operations around the Washington, D.C., airport where an Army chopper collided with a commercial jet

The Federal Aviation Administration will be permanently restricting nonessential helicopter operations around Ronald Reagan Washington National Airport in response to January’s mid-air collision over the Potomac River involving an Army helicopter and a passenger jet that killed 67 people.

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