The Aeritalia G.222 (formerly Fiat Aviazione, later Alenia Aeronautica) is a medium-sized STOL military transport aircraft. It was developed to meet a NATO specification, but Italy was initially the only NATO member to adopt the type. The United States purchased a small number of G.222s, designating them the C-27A Spartan. A modernised variant, the Alenia C-27J Spartan, had been developed. While it retains many aspects of the original aircraft, the C-27J adopts the same engines and many of the systems used on the larger Lockheed Martin C-130J Super Hercules.