The Wall Street Journal examined flight route and elevation data to show the moments before American Airlines Flight 5342 fatally collided with ​an Army Black Hawk helicopter.

The US Federal Aviation Administration will restrict helicopter traffic around Ronald Reagan Washington National Airport after a deadly crash earlier this week.

An American Airlines plane carrying 60 passengers and four crew members collided with an Army Black Hawk helicopter outside Reagan National Airport near Washington, D.C. Wednesday night. A D.C. fire official said Thursday that “we don't think there are any survivors from this accident" and "we are switching from a rescue operation to a recovery operation.