A ‘New York Times’ investigation into the Jan. 29 midair collision between an American Airlines passenger jet and a U.S. Army Black Hawk helicopter found that the captain who was flying the military aircraft was not suffering from any medical impairment.

Black Hawk pilot Rebecca Lobach failed to follow her flight instructor in the moments before colliding with a civilian airliner over Washington, D.C., according to a new report.

A new report by The New York Times breaks down the missteps that led to the deadly DCA plane crash in January.