Over the past decade, airline pilots have received more than 100 cockpit warnings about the risk of air collision with helicopters near Reagan National Airport, according to flight tracking data and government incident records.

https://www.infobae.com/estados-unidos/2025/02/13/una-decada-de-alertas-las-autoridades-ignoraron-advertencias-antes-del-choque-mortal-entre-un-avion-y-un-helicoptero-en-washington/