Alaska Airlines’ operations resumed late Sunday after it had asked for a ground stop for all the airline’s mainline aircraft, according to the airline and the U.S. Federal Aviation Administration. The FAA’s status page and Alaska Airlines said the ground stop was canceled as of 11 p.m. local time, following the airline’s request for the ground stop over an IT outage hours earlier.”At approximately 8 p.m. Pacific on July 20, we experienced an IT outage…