U.S. regulators are investigating how Delta Air Traces is treating passengers affected by canceled and delayed flights because the airline struggles to get well from a world expertise outage.

Transportation Secretary Pete Buttigieg introduced the Delta investigation on the X social media platform Tuesday “to make sure the airline is following the regulation and taking good care of its passengers throughout continued widespread disruptions.”

“All airline passengers have the appropriate to be handled pretty, and I’ll ensure that proper is upheld,” Buttigieg stated.

Delta canceled greater than 400 flights Tuesday by midmorning, accounting for about two-thirds of all cancellations in america, in response to FlightAware.

The outage started Thursday night time into Friday morning, after a defective software program improve from cybersecurity firm CrowdStrike to greater than 8 million Microsoft computer systems world wide.

The Atlanta-based provider has canceled greater than 7,000 flights because the outage began, excess of every other airline, in response to figures from FlightAware and travel-data supplier Cirium.

Delta stated it was cooperating with the investigation.

“We stay completely targeted on restoring our operation after cybersecurity vendor CrowdStrike’s defective Home windows replace rendered IT methods throughout the globe inoperable,” an airline spokesperson stated in an announcement. “Throughout our operation, Delta groups are working tirelessly to take care of and make it proper for purchasers impacted by delays and cancellations as we work to revive the dependable, on-time service they’ve come to anticipate from Delta.”

Delta has stated upward of half its expertise methods run on Microsoft Home windows, together with a device the airline makes use of to schedule pilots and flight attendants. That system couldn’t sustain with the excessive variety of adjustments triggered by the outage.

The Transportation Division stated it launched the investigation after seeing Delta’s continued widespread flight disruptions “and reviews of regarding customer support failures.”

The division stated the investigation will evolve because it “processes the excessive quantity of shopper complaints we’ve got already obtained towards Delta.”

Investigators are prone to deal with whether or not Delta is complying with federal guidelines and providing immediate refunds to passengers whose flights are canceled or considerably delayed. In a textual content supplied to The Related Press, a Delta passenger whose flight was canceled Saturday was advised, “For those who want to not rebook your journey, your ticket worth will mechanically be accessible as an eCredit that can be utilized in direction of a future Delta ticket.”

Delta’s meltdown mirrors that of Southwest Airways, which canceled almost 17,000 flights over 15 days in December 2022. A Transportation Division investigation ended with Southwest agreeing to pay a $35 million nice as a part of a $140 million settlement.

Southwest blamed its breakdown on a winter storm, however different airways recovered in a pair days whereas Southwest didn’t. Shopper advocates see the identical sample with Delta this month — the airline continues guilty the CrowdStrike outage whereas rivals comparable to American recovered shortly, and even United Airways, the second-worst at cancellations, was again on observe Monday.

“It’s not in regards to the factor that induced the issue, it’s about the way you get well from the issue. That’s the take a look at of an airline,” stated William McGee, a former plane dispatcher who’s a shopper advocate on the American Financial Liberties Mission, a gaggle important of huge companies.