The faa permanently closed part of a helicopter route near reagan national airport following a tragic crash involving a Black Hawk and an airliner that killed 67 people. The ntsb's recommendations for improved safety have prompted the faa to extend restrictions on helicopter traffic in the area, and lauded investigation efforts continue.

The Federal Aviation Administration permanently closed part of a helicopter route and extended restrictions on helicopter traffic.

The National Transportation Safety Board issued recommendations to improve helicopter route safety.

The airport where the helicopter and airliner collision occurred.

Former President whose Marine One flights caused disruptions.

Transportation Secretary who announced helicopter traffic restrictions after the crash.