Two days shy of the first anniversary of a tragedy that killed 67 people near the nation’s capital, the National Transportation Safety Board is presenting its findings in the investigation that reveal the Army Black Hawk helicopter just barely made contact with the American Airlines regional jet’s wing in the midair collision between the two aircraft.

A daylong hearing on Tuesday should make clear what factors played the biggest role in causing last January's midair collision near Washington, D.C., that killed 67 people, and the National Transporta...

Investigators have uncovered numerous factors that contributed to a U.S. Army helicopter and a passenger airplane colliding over Washington, D.C., last January, killing 67 people in the deadliest U.S.