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.

Flight instruments probably led the Black Hawk crew to believe the helicopter was lower than it actually was before the ...

Investigators probing the January midair collision of a passenger plane and an Army helicopter over Washington that killed 67 ...

The National Transportation Safety Board will hold three days of hearings starting Wednesday on January’s midair collision between an American Airlines passenger jet and an Army helicopter over the ...

The goal of the hearings is to pinpoint exactly what went wrong and how to avoid similar midair crashes between passenger ...