Federal authorities have restricted helicopter flights near Ronald Reagan Washington National Airport. The move comes days after a deadly collision between a passenger jet and a military helicopter.

The crash around 9 p.m. threw one of the world's most tightly controlled airspaces into chaos, 3 miles south of the White House and U.S. Capitol. Officials were probing the cause Friday as they searched the river.

An Army Black Hawk helicopter collided midair with an American Airlines flight from Wichita, Kansas, at Reagan National Airport on Wednesday.

A tragic mid-air collision in Washington D.C. this week is eerily similar to a previous crash in the same location that happened a little over 75 years ago, in November of 1949.

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.

There are likely no survivors after an American Airlines passenger jet and an Army helicopter crashed midair near Washington, D.C, Wednesday evening, officials have said.Flight 5342 from Kansas was on the final approach to Ronald Reagan National Airport when it collided with the Black Hawk helicopter before exploding a huge fireball.

Understaffed and overworked air traffic control crews have long been an issue at Ronald Reagan Washington National Airport, lawmakers say — another potential cause of the midair collision between a commercial jet and military helicopter over the Potomac River that killed 67 people Wednesday night in the nation’s deadliest air crash since 2001.