FAA proposal: Supersonic airliners can fly over US cities if they’re quiet

New US rules would legalize quiet supersonic flights without the sonic boom. https://arstechnica.com/gadgets/2026/07/faa-proposal-supersonic-airliners-can-fly-over-us-cities-if-theyre-quiet/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social