The U.S. Army found systemic safety failures contributed to last year’s collision near Washington, D.C., between an American Airlines jet and a Black Hawk helicopter, which killed 67 people, according to a report released Thursday.
The report identified problems involving air traffic control, helicopter routes, training and safety practices, PBS NewsHour reported. Army investigators also found that the helicopter’s location-broadcasting technology had malfunctioned, the New York Times reported. The aircraft collided as the airliner descended toward a runway, then fell into the Potomac River.
The Army completed the report in May and released it publicly after pressure from victims’ families, according to PBS. It recommended safety changes intended to prevent future accidents.