The first, the Super Guppy, or "SG", was built directly from the fuselage of a C-97J Turbo Stratocruiser, the military version of the 1950s Boeing 377 "Stratocruiser" passenger plane.
O primeiro, o Super Guppy ou "SG", construíuse directamente dende a fuselaxe dun C-97J Turbo Stratocruiser, a versión militar do Boeing 377.