https://avweb.com/flight-safety/accidents-ntsb/ntsb-dca-midair-collision-was-preventable/?
https://avweb.com/flight-safety/crj-700-helicopter-midair-in-washington

Voir aussi
UPS et la retraite des MD-11
The accelerated MD-11 retirement closely followed the Nov. 4, 2025, crash of UPS Flight 2976 shortly after takeoff from Louisville, Kentucky. That accident is still being investigated by the National Transportation Safety Board.