Pilots of an Army helicopter that collided with a passenger jet near DC airport didn't know how high they were flying because of altimeter discrepancies.

Investigators have found that a helicopter involved in a deadly crash with a passenger plane over Washington was flying above ...

Investigators conclude pilots of Black Hawk did not hear warning from air traffic controllers to pass behind jet ...

Last conversation between Army helicopter pilot and instructor revealed before fatal American Airlines crash - January 29 mid ...

The National Transportation Safety Board (NTSB) began a three day hearing in Washington, D.C., to investigate the midair ...

The hearing opened Wednesday with a video animation showing where the helicopter and airliner were leading up to the crash.

Transportation safety officials’ hearing reveals new details into what led to the January accident that killed 67 people.

Transportation officials began the first of three days of investigative hearings Wednesday to find out what caused the deadly January plane crash that left 67 dead.

A hearing investigating the mid-air collision over Ronald Reagan National Airport focused on the altitude of the U.S. Army ...