Sixty-seven people died in a collision between a Bombardier CRJ700 regional jet operated by PSA Airlines and a military Black Hawk helicopter.

The airspace around Ronald Reagan Washington National Airport has long been problematic due to heavy military and commercial flight activity in the nation’s capital, according to industry insiders.

Investigators analyze flight data to understand the crash between an American Airlines jet and a military helicopter and exactly what was going on before disaster struck.

There was no immediate word on casualties, but all takeoffs and landings from the airport near Washington have been halted.

A jet carrying 60 passengers and four crew members collided Wednesday with an Army helicopter while landing at Ronald Reagan National Airport in Arlington County, prompting a large search-and-rescue o

A combination of factors may have played a role in the deadly airplane/helicopter crash, including increased air traffic on the world's busiest runway, vacant air traffic controller positions and outdated technology to make flights safer.

Lawmakers have an interest in boosting direct flights to their states because Reagan is closer to downtown than Dulles.

Reagan is one of three U.S. airports governed by a “slot” system, in which the Federal Aviation Administration limits the number of daily takeoffs and landings to prevent overcrowded airspace. The other two are New York’s LaGuardia and John F. Kennedy airports.

Some experts, politicians and airport managers have been warning of the risks posed by the crowded airspace at Reagan Washington National Airport.

In the three years before the deadly collision between an Army helicopter and an American Airlines flight near Reagan National Airport, at least two other pilots reported near-misses with helicopters while landing at the airport,

According to the Patrick Leahy Burlington International Airport website, three American Airlines flights between DCA and BTV were canceled for Wednesday night and Thursday morning.

Questions remain over the mid-air collision between a jet, which was carrying 64 people, including the crew, and a military helicopter carrying three soldiers