Boeing and its machinists union have reached a tentative agreement that could end a strike that has halted most production in the past month.

The deal reached by the machinists union, which represents more than 33,000 workers, would cumulatively raise wages by nearly 40 percent over four years, according to details shared by the union.

WICHITA — Striking Machinists union members at Textron Aviation are scheduled to begin returning to work this week. Union members voted over the weekend to accept the company’s latest contract offer. The union had rejected the first contract proposal and went on strike Sept. 23.