The Department of Transportation has opened a probe “to ensure the airline is following the law and taking care of its passengers during continued widespread disruptions,” U.S. Transportation Secretary Pete Buttigieg said Tuesday in a post on X.
The decision adds to the strain on the carrier after it said a day earlier that it expects cancellations to stretch later into the week. Delta has fared the worst among U.S. carriers, with most other airlines getting back on track over the weekend after an outage Friday caused by CrowdStrike Holdings Inc. disrupted systems across numerous industries worldwide.
Delta didn’t immediately respond to a request for comment. The company said in a statement Monday that it was working “around the clock” to restore operations, with more than half of its worldwide IT relying on Microsoft Corp.’s Windows operating system affected by the software error.