US flights were slowly beginning to resume departures and a ground stop was lifted after the Federal Aviation Administration (FAA) scrambled to fix a system outage overnight that had forced a halt to all US departing flights.
The cause of the problem with a pilot-alerting system, which delayed thousands of flights in the United States, was unclear, but U.S. officials said they had so far found no evidence of a cyberattack.
The outage occurred at a historically slow time for US travel after the December holiday travel season, but airlines have said demand remains strong as travel continues to recover to near pre-pandemic levels.
