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.

The New York Times has reported that the military Black Hawk pilot, Captain Lobach, ignored instructions to change course that could have averted the January 29 plane crash in Washington, DC. The crash killed 67 people and prompted an investigation into aviation safety,