The helicopter’s altitude-measuring instrument was also inaccurate, investigators said at the first of three days of hearings ...

Investigators probing the January midair collision of a passenger plane and an Army helicopter over Washington that killed 67 people found the chopper was flying higher than the it should have been ...

Six months after a deadly midair collision near Washington, D.C., investigators are holding three days of hearings to uncover ...

Hearings began on the deadly midair collision between a passenger plane and a Black Hawk helicopter over Washington, D.C., in ...

The National Transportation Safety Board said on Wednesday that testing showed faulty altitude data in U.S. Army helicopters ...