Why Did Boeing Build The 777X With Composite Wings But Not A Composite Fuselage?

TheBoeing 787 , which was the first airliner to have an airframe primarily made from composite materials, has been in service since 2011. As such, it may puzzle readers to learn that the much newerBoeing 777X, which is due to be introduced next year, has an aluminum fuselage and composite wings. Composite materials for this application are made from carbon-fiber-reinforced polymers, and have been successful due to their high strength-to-weight ratio and rigidity.