[1] In addition to the fuselage modifications, the Super Guppy used Pratt & Whitney T-34-P-7WA turboprop engines for increased power and range,[1] and modified wing and tail surfaces.The plane had been carrying 30,000 pounds of borate in 100-pound sacks, which were damaged and spilled powder that temporarily blinded the crew.The overall cargo-compartment length was increased to 111 ft 6 in (34 m), and the improved fuselage and engines allowed for a maximum load of 52,500 lb (23,800 kg).In the early 1970s, two SGT aircraft were used by Airbus to transport airplane parts from production facilities to the final assembly plant in Toulouse.In 1982 and 1983, two additional Super Guppy Turbines were built by Union de Transports Aériens Industries in France after Airbus bought the right to produce the aircraft.
USAF Boeing YC-97J Stratofreighter 52-2693 seen in 1952, before conversion to the first Super Guppy