AdvertisementFAA Finds New Problem With 737 Max Jets, Delaying Their Return To FlightJune 26, 2019David SchaperfacebookEmailSouthwest Airlines is among the companies that grounded Boeing 737 MAX aircraft because of a software failure that caused fatal crashes of Lion Air and Ethiopian Airlines planes. The FAA said Wednesday it has found a new flaw in the plane that needs to be fixed. (Getty Images)