# L3Harris System Update Preceded Federal Aviation Administration Ground Stop By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/57473 Published: 2026-11-14T17:03:23.000Z Updated: 2026-11-14T17:03:23.000Z Section: Technology > The FAA halted U.S. departures for more than four hours on Nov. 13. More than 5,300 flights were canceled, with disruptions continuing into Saturday. An update to an older controller communications system managed by L3Harris Technologies came before the Nov. 13 ground stop by the Federal Aviation Administration (FAA), which halted U.S. departures for more than four hours. The [ground stop]() began at about 4 p.m. ET Friday and ended at 8:15 p.m. ET (01:15 UTC Saturday). More than 5,300 flights were canceled that day, with disruptions continuing into Saturday. Transportation Secretary Sean Duffy said outdated switches and routers became overloaded with data and began sending inconsistent information. Duffy said officials responded by shutting down the system. ## Links in this article - [ground stop](https://www.tokenpost.com/news/technology/57129)