Alaska Airlines and Horizon Air grounded all flights Sunday night due to a major IT outage, prompting a system-wide FAA ground stop that lasted until early Monday. Although operations have since resumed, passengers are still facing delays and residual disruptions. Gizmodo reports: The airline requested a system-wide ground stop from federal aviation authorities at about 11 p.m. ET on Sunday night. That stop remained in effect until around 2 a.m. ET Monday, when the Federal Aviation Administration confirmed it had been lifted. But disruptions didn't end there. Alaska warned passengers to brace for likely delays throughout the day. [...] The FAA's website listed the stop as applying to all Alaska Airlines aircraft. Gizmodo notes that the incident comes nearly a year after the massive 2024 CrowdStrike crash, which has become known as the largest IT outage in history. "The July 2024 outage brought down an estimated 8.5 million Microsoft Windows systems running CrowdStrike's Falcon Sensor software, disrupting everything from hospitals and airports to broadcast networks." "There's no word yet from Alaska on whether the outage ties into a broader software problem, but the timing, almost exactly a year after the CrowdStrike crash, isn't going unnoticed on social media, with users wondering if the events are related."Read more of this story at Slashdot.