Boeing officially launched its 777X programme in November 2013.
Boeing Frederickson is home to the Composite Manufacturing Center (CMC), which manufactures the tail of the current 777 as well as the vertical fin of the 787 Dreamliner.
According to The Seattle Times report, Frederickson site manager Dave Moe says the build plan for the 777X tail (which will be a little bigger than the 777 tail) is not clear yet because the engineering design has just begun, but he expects to use elements of the 787 manufacturing process and to add automation.
Composite wing
The 777X, which Boeing describes as the largest, most-efficient twin-engine jet in the world, will feature technologies developed for the 787 Dreamliner, including a composite wing.
In February Boeing confirmed that it will manufacture the 777X composite wing at a new facility on its Everett, Washington, site.
