The stated cruise speed for the Super Guppy was 265 mph (426.5km/h) carrying a 40,000 pound (18,144kg) payload. The ASI design engineers took the original Guppy concept as far as was practically possible with the 8 foot (2.4m) wide floor mated to a 25 foot (7.6m) diameter cargo compartment. The constant section of the fuselage measures 30 feet (9.1m) long. The overall length of the cargo compartment is over 110 feet (33.5m). All cargo was to be loaded from the front, making a swing nose the most practical method of loading. The unique hinged nose opens 110 degrees, permitting full frontal cargo loading. A control lock and disconnect system at the fuselage break allows the nose to be opened and closed without disrupting the flight or engine control rigging.

Today, the International Space Station needs some of the same capabilities as the Apollo and Skylab programs. NASA and its international partners, with manufacturers worldwide, are building the newest wonder of the world. In the coming years, the International Space Station will be assembled in space. Its components will be transported to the launch site from all over the world. To solve the logistics challenge, NASA will use the latest version of the Super Guppy, the 377SGT-F.

NASA's B-377-SG/SGT-4 Super Guppy arrived at Tinker in April 3, 2008 for a programmed depot maintenance-like inspection. Yet, when inspectors examined the aircraft, they noticed significant corrosion and suggested the aircraft be refurbished.

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NASA's Airbus Industries 377SGT-F "Super Guppy"' is the only one left flying! Its cargo compartment is 25 feet tall, 25 feet wide and 111 feet long. It can carry cargo weighing more than 26 tons. acquired by NASA from the European Space Agency under an International Space Station barter agreement. ESA supplied the aircraft to offset the cost to NASA of carrying ESA experiment equipment to the station as part of two future Space Shuttle flights. This Super Guppy is the latest version in a long line of Guppy cargo aircraft used by NASA. Image and Text credit