The allegation, in a letter on Sunday from attorneys for the technology firm, builds upon CrowdStrike’s claim last week that Delta rejected its repeated attempts to help. CrowdStrike said on Sunday that its chief executive officer, George Kurtz, tried to connect with his counterpart at the airline, Delta CEO Ed Bastian.
“CrowdStrike’s CEO personally reached out to Delta’s CEO to offer onsite assistance, but received no response,” according to the letter, which was signed by Michael Carlinsky, co-managing partner of law firm Quinn Emanuel Urquhart & Sullivan.
In a separate emailed statement, CrowdStrike said that it hopes Delta will “agree to work cooperatively to find a resolution”.
Delta wasn’t immediately available for comment outside of regular US business hours.
Read More: Delta Says CrowdStrike Outage Wreaked Havoc on Team USA’s Travel
The Atlanta, Georgia-based carrier was by far the worst hit airline as it struggled to normalise flight operations several days after the outage. Delta said it took a $500-million charge after cancelling more than 5,500 flights in the several days that followed the initial CrowdStrike outage.
Spirit Airlines Inc. said the outage that occurred in mid-July would contribute to a $7.2-million negative hit to third quarter operating income. Meanwhile, Tony Fernandes, the co-founder of one of Southeast Asia’s largest low-cost carriers, AirAsia, has also demanded compensation for the disruption.

The Boeing Co. 737 Max aeroplane taxis after landing during a test flight in Seattle, Washington, U.S., on Wednesday, Sept. 30, 2020. (Photo: Chona Kasinger/Bloomberg via Getty Images)