Spirit AeroSystems said there is "substantial doubt about the company's ability to continue as a going concern" though Boeing and Airbus are planning to acquire portions of the parts maker.

Spirit AeroSystems is based in Wichita, Kansas, and the company builds the entire fuselage section for Boeing's 737 MAX family of aircraft. It also produces the forward fuselage s

Spirit AeroSystems, a key Boeing supplier, is temporarily laying off workers on its 737 production line to manage an inventory surplus, the company said Friday.