Aviation experts tell PEOPLE it's possible that the U.S. Army Black Hawk helicopter did not see the American Airlines passenger plane before the two collided on Wednesday, Jan. 29, killing 67 people.

An American Airlines regional jet went down in the Potomac River near Ronald Reagan Washington National Airport.

Longtime friend and Embry-Riddle classmate recalls the life of Jonathan Campos, captain of the doomed airliner involved in Washington, D.C., crash.

American Airlines plane crash in Washington, D.C., that killed all 67 involved, investigators have sought to understand the tragedy. Here’s everything to know so far.

Families of the victims in Wednesday’s catastrophic airline collision could receive a boost in lawsuits from high-profile comments accepting blame.

Reagan National Airport resumed flight operations Thursday morning after a tragic collision of a passenger plane and Army helicopter.

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

The father of 28-year-old PSA Airlines co-pilot Sam Lilley, who was killed in the deadly collision near Ronald Reagan ...

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.

U.S. authorities restricted helicopter flights near Reagan Washington National Airport on Friday, after a midair collision ...

An American Airlines flight crashed into a U.S. Army Black Hawk Helicopter over the Potomac River as it approached Ronald Reagan Washington National Airport.

Families mourn the lives of the two commercial airline pilots who perished in Wednesday night's crash in Washington D.C.