RE major composite structures which have been flying for over two decades in commercial this may 2004 article may help
https://www.boeing.com/news/frontier...may/i_ca3.html
In 1992, Boeing opened the state-of-the-art facility to provide composites solutions for the Boeing 777 empennage, which is made up of the vertical fin and horizontal stabilizer. Now just over a decade later, Structural Composites Frederickson is getting ready to celebrate the milestone delivery of its 500th 777 empennage.Part of the Fabrication Division for Boeing Commercial Airplanes, Structural Composites Frederickson today is focusing its manufacturing excellence for primary and secondary composite wing-like structures on a new dream: the Boeing 7E7 Dreamliner.