The National Transportation Safety Board provided an update on Friday into the investigation of the deadly Army Black Hawk helicopter and American Airlines flight collision.

The NTSB said Army Black Hawk crew may not have heard a message to "pass behind" the D.C.-bound passenger plane before the Jan. 29 midair crash over the Potomac River.

There’s no indication the U.S. Army Black Hawk crew could tell there was an impending collision before its devastating crash ...

On Jan. 29, an American Airlines passenger jet and an Army helicopter collided as the plane prepared to land at Washington D.C.’s Ronald Reagan National Airport.

Black Hawk helicopter may not have heard order to go behind American Airlines jet - The Army helicopter appeared to be ...

The National Transportation Safety Board says altimeter in the Black Hawk helicopter may have malfunctioned before the DCA ...

Voice recordings from the Black Hawk helicopter involved in the crash with a commuter plan in Washington, DC, on January 29 ...

The crew of the Army helicopter that collided in midair with an American Airlines jet near Washington, D.C.’s Ronald Reagan ...

There’s no indication the U.S. Army Black Hawk crew could tell there was an impending collision before its devastating crash ...

The National Transportation Safety Board says altimeter in the Black Hawk helicopter may have malfunctioned before the DCA ...

Jonathan Campos, Samuel Lilley, Danasia Elder and Ian Epstein, the crew who died on board American Eagle Flight 5342, have ...

Social media users were moved by the tribute seen in a viral clip, with one saying "such a sad incident..my heart breaks for ...