Boeing engineer alleges unsafe assembly flaws in 787 Dreamliner

• Boeing engineer Sam Salehpour claims the 787 Dreamliner has assembly flaws that make it unsafe, saying it could "drop to the ground" midflight.

• Salehpour alleges there are tiny gaps where fuselage sections join that could lead to fatigue and failure over time.

• Boeing disputes Salehpour's claims, saying inspections of 689 planes found no issues and the 787 was rigorously stress tested beyond its lifespan.

• The allegations emerge as Boeing still reels from other issues like a recent 737 MAX panel blowout midflight.

• Salehpour plans to testify to a Senate subcommittee and is steadfast in his claim that 787 production should halt to address safety concerns.