GoKawiilFAA says root cause of nationwide flight ground stop still unidentified
FAA Administrator Bryan Bedford said officials have not pinpointed what caused instability in routers and networking equipment that led to the longest nationwide ground stop since 9/11. Transportation Secretary Sean Duffy named Cisco and L3Harris Technologies equipment as involved, and L3Harris said it is working with the FAA to investigate the conditions behind the November 13 stoppage.