Alaska Airlines on Sunday asked to ground its entire fleet of aircraft.The airlines said it experienced an IT outage that was affecting its operations.It said the outage would have "residual impacts" for the rest of the evening.

Alaska Airlines asked to ground its entire fleet of aircraft on Sunday because of an IT outage.

The Federal Aviation Administration said in an advisory on Sunday evening that Alaska Airlines had requested a "ground stop on all Alaska mainline aircraft."

"At approximately 8 p.m. Pacific on Sunday, Alaska Airlines experienced an IT outage that's impacting our operations," an Alaska Airlines representative said in a statement to BI.

"We requested a temporary, system-wide ground stop for Alaska and Horizon Air flights until the issue is resolved," the statement said, adding that there would be "residual impacts" to the airlines' operations throughout the evening.

The company did not respond to BI's query about how many flights would be affected or whether any ongoing flights were interrupted.

Per its website, Alaska Airlines has a fleet of 238 Boeing 737 aircraft and 87 Embraer 175 aircraft.

"We are experiencing issues with our IT systems. We apologize for the inconvenience and are working to resolve the issues," a notice posted at the top of the airline's website said at press time.

Representatives for the FAA did not respond to a request for comment from Business Insider.

This is a developing story. Check back for updates.