The Brief Travelers at Phoenix Sky Harbor International Airport faced major flight delays caused by a nationwide American Airlines technology glitch and East Coast storms. A temporary ground stop was issued after the American Airlines connectivity issue impacted systems before being lifted around 4 p.m. That ground stop was lifted around 4 p.m., but flight boards showed widespread delays. American Airlines says it has resolved the IT glitch that prompted the ground stop, but it still left some American Airlines passengers changing their plans. Although the ground stop has been lifted, multiple American Airlines flights remained delayed at Phoenix Sky Harbor.