Spirit AeroSystems Holdings, Inc. engages in the design and manufacture of aero structures for commercial and defense aircraft. It operates through the following segments: Commercial, Defense & Space, and Aftermarket. The Commercial segment designs and manufactures forward, mid, and rear fuselage sections which related to floor beams, nacelles, struts and pylons, horizontal and vertical stabilizers, flaps and slats and wing structures. The Defense & Space segment offers fixed wing aircraft aerostructures, missiles and hypersonics and rotorcraft aerostructure. The Aftermarket segment includes development, production, and marketing spares and repair and overhaul (MRO) services related to commercial and defense & space program. The company was founded in 2005 and is headquartered in Wichita, KS.