F-35 aircraft from Lot 20 will serve the US Air Force, Navy, and Marine Corps, as well as international buyers through the Foreign Military Sales (FMS) programme. Work on the contract will take place across multiple locations, with the majority (59%) concentrated in Fort Worth, Texas.
Additional work will be distributed among sites in El Segundo, California (14%); Warton, United Kingdom (9%); Cameri, Italy (4%); Orlando, Florida (4%); Nashua, New Hampshire (3%); Baltimore, Maryland (3%); San Diego, California (2%); and other locations outside the continental United States (2%). Completion of the contract is expected by May 2031.
F-35 jets currently rolling off the production line in Fort Worth are undergoing Tech Refresh 3 upgrades. Soon, they will begin incorporating more than 80 enhancements planned for the Block 4 configuration. The Lot 20 aircraft will be fully equipped with these advanced features.
