On the evening of July 28, local time, the US Federal Aviation Administration confirmed that it had issued a “ground grounding” order for American Airlines Group flights across the United States due to a system failure. The US Air Traffic Control System Command Center said that the system failure affected the operation of American Airlines at all airports and related facilities. According to data from flight tracking data company FlightAware, American Airlines flights were able to land normally for a while, but take-off was suspended. Later in the day, American Airlines Group issued a statement saying that some of the company's systems had a connection failure that night due to technical problems. After the restoration, various systems are being brought back online one after another, and flights have started taking off again. The statement also confirmed that the company had temporarily implemented ground grounding measures while the technical team investigated and resolved the issue.

On the evening of July 28, local time, the US Federal Aviation Administration confirmed that it had issued a “ground grounding” order for American Airlines Group flights across the United States due to a system failure. The US Air Traffic Control System Command Center said that the system failure affected the operation of American Airlines at all airports and related facilities. According to data from flight tracking data company FlightAware, American Airlines flights were able to land normally for a while, but take-off was suspended. Later in the day, American Airlines Group issued a statement saying that some of the company's systems had a connection failure that night due to technical problems. After the restoration, various systems are being brought back online one after another, and flights have started taking off again. The statement also confirmed that the company had temporarily implemented ground grounding measures while the technical team investigated and resolved the issue.