Most airlines except one are recovering from the CrowdStrike outage. Federal authorities have noted

Delta Air Lines struggled for a fourth straight day to recover from Global Technology Outage Cause Wrong software updatestranding tens of thousands of passengers and drawing unwanted attention from the federal government.

Other carriers returned to near-normal levels of service disruptions on Monday, intensifying the glare on Delta is relatively weaker. In response to the outage that has hit airlines, hospitals and businesses around the world.

Minister of Transport Pete Buttigieg Talk to Delta Delta Air Lines CEO Ed Bastian spoke Sunday about the high number of flight cancellations since Friday. Buttigieg said his agency has received “hundreds of complaints” about Delta, and he expects the airline to provide hotels and meals to delayed travelers and issue quick refunds to customers who don’t want to rebook on a later flight.

“No one should be stuck in an airport overnight or stuck on hold for hours waiting to speak to a customer service agent,” Buttigieg said, pledging to help Delta passengers by restricting air travel. Consumer Protection Rules.

Delta has canceled more than 5,500 flights since the outage began early Friday morning, including at least 700 canceled Monday, according to aviation data provider Cirium. Delta and its regional affiliates accounted for about two-thirds of all cancellations worldwide on Monday, including nearly all of the flights canceled in the United States.

United Airlines has been the second-worst performing airline since the outage began, canceling nearly 1,500 flights. However, United had only canceled 17 flights on Monday by late morning.

Other airlines affected by the first round of groundings were also back to normal operations by Monday. They include American Airlines, Spirit Airlines, Frontier Airlines and Allegiant Air.

Delta CEO Bastian said in a message to customers on Sunday that the company is continuing to restore operations that were disrupted. One of the tools Delta uses to track crews was affected and was unable to process the large number of changes caused by the outage.

“The technology issue occurred on the busiest travel weekend of the summer, when our booked loads exceeded 90%, limiting our ability to re-accommodate,” Bastian wrote. Loads are the percentage of seats sold on each flight.

Airlines have large, multi-layered technology systems, and crew tracking software is often among the oldest. When the outage began Friday, it also affected systems used to check in passengers, schedule crews and make pre-flight calculations about aircraft weight and balance, the airlines said. United and American reported intermittent problems communicating with crews in the air, which contributed to their decisions about All flights have been suspended for a short period..

Some airlines, including Southwest and Alaska, do not use CrowdStrike, the provider. Cyber ​​Security Programs A faulty upgrade to Microsoft's Windows operating system caused the flight disruptions. These airlines have seen no significant cancellations. Aviation experts say Delta is more likely to have Microsoft Windows operating systems than other airlines.

“The impact of the CrowdStrike IT outage will last for several more days, and will be on the minds of travelers who have cancelled their vacations for even longer,” John Grant, senior analyst at travel data firm OAG, said in a blog post. “Events like this highlight the challenges facing an industry that relies on external IT systems that can, and are likely to, fail again in the future.”

Delta Corporation is headquartered in Atlanta. offered concessions To make it easier for customers to reschedule flights.

Delta’s collapse is reminiscent of the December 2022 disaster that caused Southwest Airlines to cancel nearly 17,000 flights over 15 days. After a federal investigation into Southwest’s compliance with consumer protection rules, the airline agreed to pay a $35 million fine as part of a $140 million settlement With the Ministry of Transport.

the Airlines Industries This may be the most visible victim of the global technical problems caused by a flawed software update from Texas-based cybersecurity firm CrowdStrike. Microsoft said the flaw affected 8.5 million devices. CrowdStrike says it has rolled out a fix, but experts say it could take days or even weeks to fix. Every computer is affected..