Boeing engineer alleges safety issues with 787 fuselage assembly, sparking FAA investigation

Boeing engineer Sam Salehpour alleges safety concerns with how fuselage sections are fitted together on the 787, warning it could break apart mid-flight after thousands of trips

Salehpour claims Boeing in 2021 used higher force than recommended to shimmy fuselage gaps to speed 787 production

Salehpour says in some places, minor fuselage gaps weren't shimmied at all per internal reports

Salehpour was moved from the 787 to the 777 program after voicing concerns; lawyers say Boeing threatened to fire him after he noted 777 issues

The FAA is investigating Salehpour's claims; he's set to testify to Congress on April 17 as Boeing says it's assessing if there's a long-term issue