This thesis explores the integration of Additive Manufacturing (AM) in the logistics and supply chain of Leonardo S.p.A.’s Aircraft Division, with a particular focus on developing a business model for the production of polymer parts. Leonardo S.p.A. is a global leader in Aerospace, Defense, and Security, renowned for its advanced technological solutions and commitment to quality and sustainability. The company offers a diverse range of products, including helicopters, aircraft, unmanned aerial vehicles, and electronic systems, serving both military and civil markets worldwide. Notably, Leonardo already employs AM-produced parts in its operational vehicles, underscoring the company’s commitment to innovative manufacturing methods. Aimed at enhancing efficiency in the provision of spare parts and Ground Support Equipment (GSE), this study highlights AM's potential to reduce lead times, enable on-demand production, and improve flexibility within manufacturing processes.