United Airlines announced on Friday that all its aircraft were grounded due to a third-party software outage that was affecting computer systems globally. This outage led to the Federal Aviation Administration (FAA) issuing a ground stop for several major US carriers.
The airline stated that they were actively working to resolve the software issue and restore their systems. As a result, all flights were being held at their departure airports until the problem was fixed. However, flights that were already in the air were allowed to continue to their destinations.