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 nation's capital that killed 67 people.

Flight instruments probably led the Black Hawk crew to believe the helicopter was lower than it actually was before the collision with a commercial airplane on Jan. 29.

In May, the FAA barred the Army from helicopter flights around the Pentagon after a May 1 close call that forced two civilian planes to abort landings. The FAA this week said the