Core Insights - Alaska Air Group experienced a significant IT outage that led to a system-wide ground stop of all flights, impacting both Alaska Airlines and Horizon Air. This incident was attributed to a failure at its primary data center and marks the second major IT disruption in three months [1][3][7]. Financial Performance - For the third quarter, Alaska Air reported adjusted earnings per share of $1.05, which fell short of market expectations. Revenue reached $3.77 billion, aligning closely with estimates. The company noted that costs were higher than anticipated, partly due to expenses incurred from the previous IT incident in July [4]. Operational Impact - The IT issues began at 6:30 p.m. EDT and resulted in a ground stop announced at 10 p.m. EDT, with operations restored by 3:15 a.m. the following day. The outage affected several key systems necessary for operations, leading to the ground stop to ensure aircraft safety [2][3]. Market Reaction - Following the announcement of the quarterly results and the IT outage, shares of Alaska Air Group declined by over 4%. Year-to-date, the stock has lost approximately 30% of its value [4]. Industry Context - The repeated IT outages highlight the increasing reliance of airlines on complex digital systems, emphasizing that technological resilience is as critical as fuel costs or traveler demand in the airline industry [2].