The airspace around Washington, D.C., is congested and complex — a combination aviation experts have long worried could lead to catastrophe.

On Tuesday, a day before Wednesday’s fatal collision, a Republic Airways jet from Windsor Locks, Conn., was minutes away from landing at Ronald Reagan Washington National Airport before it aborted its landing to avoid a helicopter in its way.

An Army Black Hawk helicopter collided with a regional jet near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.

The crash near Reagan National Airport has renewed questions about the airport's flight load, considering its small size, among other issues.

Sen. Tim Kaine (D-Va.) doubled down during an interview on his concerns about the Ronald Reagan Washington National Airport (DCA) space being overcrowded following the fatal collision between a military helicopter and an airline plane that killed 67 people.

The deadly mid-air collision over Washington, D.C., has reignited concerns over air traffic congestion and safety risks at Ronald Reagan Washington National Airport, a tightly packed aviation hub that shares airspace with military and government flights.

The audio indicates that air traffic controllers tried to warn the Army helicopter about a nearby Canadair Regional Jet.

The airspace where a deadly mid-air crash between a passenger plane and a U.S. Army Black Hawk occurred late Wednesday night is one of the most complex and congested in the country. Officials expect no survivors from the crash,

WASHINGTON (AP) — DC's Reagan National Airport will reopen at 11 a.m. Thursday, officials say. Giancarlo Esposito is playing Sidewinder in Captain America: Brave New World - here's what we know

A jet with 60 passengers and four crew members collided with an Army helicopter while landing at the Ronald Reagan National Airport near Washington. Multiple people were killed in the

A passenger jet collided with a helicopter while landing at Ronald Reagan National Airport on Wednesday evening, prompting a large search-and-rescue operation in the nearby Potomac River. There was no

DCA is one of the most demanding airports in the world. It also has what’s known as ‘helicopter alley’ with hundreds of police, military, news and rescue helicopters criss-crossing