Although this Super Guppy is very close in dimensions to the original Super Guppy, the shape of the fuselage and engine nacelles are completely different. The fuselage has a smoother flow more remenisent of the Pregnant Guppy.
The first 377SGT Super Guppy Turbine flew on August 24, 1970. After success with the first of the 377SGTs, Aero Spacelines built a second 377SGT and it flew exactly two years later on August 24, 1972.
Aero Spacelines originally planned to build and operate the MGT and SGT aircraft as they had the PG, SG, and MG previously. It was only after the company got into serious financial trouble that the decision was made to sell the SGT to Airbus Industrie.
