The Super Guppy-Turbine version currently operated by NASA is the last generation of Guppy that Aero Spacelines built. The biggest difference between it and its predecessor was an upgrade to more reliable and readily available Allison T-56 turboprops.
Airbus Industries commissioned and operated four SGT Super Guppy-Turbine aircraft to ferry large A300 fuselage sections throughout Europe during the last three decades of the 20th century.
NASA's Super Guppy-Turbine primarily moves cargo for the United States' space program and International Space Station components. The Super Guppy is also scheduled to transport the Orion Heat Shield from Textron Defense Systems near Boston to NASA's Kennedy Space Center later this month.