Authorities say they have recovered the remains of 55 of the 67 people killed in the deadliest U.S. air disaster since 2001.

Officials say preliminary data from the midair crash between an airliner and an Army helicopter showed conflicting indications about the aircrafts’ altitudes when they collided near a Washington, D.

Investigators are seeking clues into this week's deadly midair collision, the deadliest aviation disaster in the U.S. almost a quarter century.

A deadly midair collision between an American Airlines jet and an Army helicopter near the nation's capital is bringing renewed focus on the federal agency charged with investigating aviation disasters.