The Boeing Co. issued formal layoff warning notices Wednesday to 939 machinists working on its 787 and 747 assembly lines and modification centers at Everett.
That notice tells them they could be laid off by June 7.
The company two weeks ago told union representatives of the impending cutbacks. Those cutbacks are happening because the assembly process on the two new planes is stabilizing and because modification work necessary to bring some of the early production versions of those two new planes up to certification standards is declining.
“This is the same layoff that was publicized earlier,” said Boeing spokesman …