Investigators say deadly midair collision near Washington DC followed years of ignored traffic warnings

Key Highlights

• The collision involved an American Airlines regional jet and a U. S. Army Black Hawk helicopter.
• All 67 people aboard both aircraft were killed in the incident.
• The NTSB identified systemic failures as a primary cause of the crash.
• Investigators noted a history of ignored warnings about helicopter traffic dangers.
• The findings were presented during a hearing led by NTSB chair Jennifer Homendy.