Core Points - United Airlines has resolved the technical issues that led to the grounding of its flights and is working to restore operations [1] - The Federal Aviation Administration (FAA) approved United Airlines' request for a ground stop due to the technical problems [1] - Major airports affected by the ground stop include Chicago, Denver, Newark, Houston, and San Francisco [1] - As of 9:45 PM Eastern Time, approximately 31% of United Airlines flights were delayed, and 1% were canceled [1]