Investigators with the National Transportation Safety Board are in the initial stages of what's setting up to be a sprawling and consequential probe into a deadly, midair crash between a regional passenger jet and a military helicopter just outside D.

An American Airlines plane and a U.S. Army helicopter collided near Reagan National Airport and crashed into the Potomac River, according to officials.

Police boats have returned to the Potomac River as part of the recovery and investigation after the United States’ deadliest aviation disaster in almost a quarter century

An American Airlines commercial flight and an Army Black Hawk chopper crashed midair on Jan. 29. Here are updates on this developing story.

We are now at the point where we are switching from a rescue operation to a recovery operation,” said John Donnelly, the fire chief in the nation’s capital.

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

A regional jet crashed into a US Army helicopter, killing 67 people in the deadliest US air disaster in more than 20 years. The DC Fire and EMS Department said that 41 bodies have so far been recovered from the wreckage of the plane crash in the Potomac River.

Multiple 911 callers reported the crash near the river just before 8:55 p.m., according to the Metropolitan Police Department and the District of Columbia Fire and EMS.

Remains of 41 of the 67 victims of the mid-air collision between American Eagle Flight 5342 and a military helicopter near Ronald Reagan Washington National Airport have been recovered so far, officials confirmed Friday.

The catastrophe immediately raised questions about the close proximity in which helicopters and jetliners soar over the busy skies of the nation’s capital.

A timeline of the tragic collision between a commercial plane and a Black Hawk helicopter over the Potomac River, with insights into the ongoing investigation.

While authorities focus on the cause of the US's deadliest aviation disaster since 2001, families are mourning their loved ones. Here's the latest.