An internal Boeing memo Wednesday stated that a good deal of the detailed design work for the 777X widebody jet will be carried out by teams outside of Washington.
The memo was sent to workers from Mike Delaney, Boeing Commercial Airplanes vice president of Engineering, and Scott Fancher, vice president and general manager of Airplane Development.
According to the memo, teams in South Carolina, Alabama, California, Philadelphia and St. Louis will carry out the detailed design work.
SPEEA, the engineer's union, said the memo doesn't mean core design work will not stay in Puget Sound.
The internal Boeing memo said, "at this time, no decisions have been made about 777X design or build in Puget Sound."
Boeing had previously stated that engineering work handled by suppliers for the 787 would be brought in-house for the next program.
"In addition, we are leveraging lessons learned on 787 and 747-8 to ensure continuity across the 777X program," the memo said. "The announced structure will allow for an efficient use of resources and enable Boeing to resolve design issues effectively the first time.