Spirit AeroSystems Holdings, Inc., through its subsidiaries, designs, manufactures, and supplies commercial aero structures worldwide. The company operates through three segments: Fuselage Systems, Propulsion Systems, and Wing Systems. The Fuselage Systems segment develops, produces, and markets forward, mid, and rear fuselage sections and systems primarily to aircraft original equipment manufacturers (OEMs); and offers related spares, as well as maintenance, repairs, and overhaul (MRO) services. This segment also provides rotorcraft, including forward cockpits and cabins. The Propulsion Systems segment offers struts/pylons; nacelles, such as thrust reversers; and related engine structural components primarily to aircraft or engine OEMs, as well as related spares and MRO services. The Wing Systems segment provides wings and wing components comprising flight control surfaces; and other miscellaneous structural parts primarily to aircraft OEMs, as well as related spares and MRO services. It also offers low observables, including radar absorbent and translucent materials; radomes; and other military services, such as fabrication, bonding, assembly, testing, tooling, processing, engineering analysis, and training. The company was formerly known as Mid-Western Aircraft Systems Holdings, Inc. Spirit AeroSystems Holdings, Inc. was founded in 1927 and is headquartered in Wichita, Kansas.