Preliminary flight data from the deadly plane crash near Reagan National Airport in Washington, D.C., shows conflicting readings about the altitudes of a passenger jet and Army helicopter that collided,

The pilots of the American Airlines plane that collided with a U.S. Army helicopter late Wednesday night have been identified. Jonathan Campos, 34, was the captain of American Airlines Flight 5342 when an Army helicopter apparently flew into its path as it prepared for landing at Ronald Reagan National Airport near Washington, D.C., CNN reported.

The Black Hawk helicopter that crashed into an American Airlines flight was alerted to the plane’s presence by air control twice.