Air travel across US thrown into chaos after computer outage

By DAVID KOENIG and MICHELLE CHAPMAN
AP Business Writer

NEW YORK (AP) — Thousands of flights across the U.S. were canceled or delayed after a government system that offers safety and other information to pilots broke down. The problems on Wednesday stranded some planes on the ground for hours. The White House said there was no evidence that a cyberattack triggered the outage, which upended travel plans for millions of passengers. President Joe Biden said he directed the Department of Transportation to investigate. The breakdown showed how much American air travel depends on an antiquated computer system that generates alerts called NOTAMs — or Notice to Air Missions — to pilots and others.