Boeing announced that high-speed wind tunnel tests have started for the Boeing 777X. Testing began last week at Boeing's Transonic Wind Tunnel in Seattle. This is another important step forward in the development of the 777X".

Data from these tests will allow to validate the airplane cruise performance models in support of the ongoing design efforts. The data will help engineers with the configuration development of the airplane, validate computational fluid dynamics (CFD) predictions and support preliminary loads cycle development.