Southwest delays lots of flights four months after Buttigieg promised to hold them” Accountable.”

Southwest Airlines ordered a yard stop, which prevents flights that aren’t already in the air from taking off and delays at least 1, 820 flights across the nation, four months after transport director Pete Buttigieg pledged to keep the airline responsible for widespread flight delays.

According to CNN, the Tuesday disturbance was caused by a” vendor-supplied firewall” failure that resulted in the loss of operational data. At 10:36 a.m., Southwest tweeted that it wanted to” hesitate” before taking off. Even before noon, the aircraft resumed operations.

When Southwest experienced a severe system meltdown in December, leading to 16,700 flight cancellations — nearly half of its schedule — between December 20 and 29, Buttigieg came under intense fire.

More than two dozen House Democrats wrote a letter to Buttigieg in January demanding the transportation secretary penalize Southwest Airlines for the cancellations. “We believe much more needs to be done,” the lawmakers wrote. 

Buttigieg claimed in December that he “made clear” to the airline’s CEO “that our department will be holding them accountable for their responsibilities to customers.”

Southwest would be held accountable, according to the secretary, in order to” make sure that this doesn’t happen again.”

Tuesday’s incident is the latest transportation crisis to take place under Buttigieg’s watch, two months after he faced bipartisan criticism for his slow response after a train derailed in East Palestine, Ohio, causing a chemical spill. But Buttigieg has directed his agency to focus on racist highways and roadways. Polling found the majority of Americans want him to quit the role.