LMI Aerospace Inc. (LMIA), a subsidiary of Sonaca Group since its 2017 acquisition, serves as a leading supplier of structural assemblies, kits and components as well as a provider of design engineering services to commercial, business, regional and defense aerospace markets; the company fabricates, machines, finishes, kits and assembles close-tolerance aluminum, specialty alloy and composite components while offering engineering and program management services that support full aircraft product lifecycles from design through fleet support via turnkey solutions. Headquartered in St. Charles, Missouri, with 13 facilities across the United States and Mexico, LMI Aerospace operates within the aerostructures industry, targeting original equipment manufacturers, Tier 1 suppliers and composite material providers for large commercial, corporate, military and regional aircraft programs. Founded in 1948, the company maintains AS9100 certification and NADCAP approval, emphasizing integrated supply chain control for higher quality, lower costs and on-time delivery. In recent developments, LMI Aerospace has benefited from deepened integration within the Sonaca Group, including a 2023 rebranding effort and shared vision alignment as noted in Sonaca's annual report, alongside ongoing operational enhancements in manufacturing efficiencies and advanced techniques like composite fabrication amid aerospace sector recovery through 2025.