The helicopter route at the time of the collision allowed the Black Hawk to fly as close as 75 feet below planes descending to land on runway 33 at Reagan National Airport, according to the NTSB. With allowable errors in the helicopter’s altimeters and other equipment as well as Army rules expecting aviators to hold their altitude within 100 feet, it could end up being much closer.
“How much tolerance should we have for aviation safety whenever civilian lives are at risk?” asked Todd Inman, NTSB board member. “How much is that tolerance,” he continued. “I think it should be zero.”
Sounds like the tolerances weren't big enough! Odd interaction putting those two paragraphs next to each other. NTSB demanding zero margin for safety...
You get whatever the media is focused on. Hundreds of F16s have been lost to non-combat accidents throughout history, yet somehow we have no memory of them.