On July 20 at 8 p.m. PT, Alaska Airlines and its Horizon Air subsidiary requested a system-wide ground stop due to a technology failure. All flights were grounded until around 11 p.m. PT, with lingering delays expected as aircraft and crews were repositioned. This marks the second time in just over a year that Alaska grounded its fleet due to technical issues (previously in April 2024) The Times of India+15Reuters+15The Economic Times+15FOX 13 Seattle+6The Daily Beast+6The Economic Times+6. The airline operates 238 Boeing 737s and 87 Embraer 175s, all affected during the outage