According to the FAA, United Airlines is requesting that all flights be grounded nationwide

United Airlines has briefly requested to ground its fleet nationwide, the airline and the Federal Aviation Administration said on Tuesday.
The FAA confirmed to NBC News that the airline requested the ground stop.
“We have a system-wide technology issue and are holding all planes at their departure ports,” United Airlines said in a statement to CNBC.
“Flights that are already in the air will continue to their destination as planned. We are currently reviewing and will release more information as it becomes available.”
The FAA said in one opinion on X, formerly Twitter, at around 1:50 p.m. ET that the airline has lifted the ground stop on flights in the United States and Canada.
Around the same time that the airline said in a statement The ground attack is now removed.
This is an evolving story. Please check again for updates.