From :
www.allaboutguppys.com
The Pregnant Guppy was constructed using B-377 N1024V and parts of B-377 (c/n 15976). The construction was done in three main phases. First, Aero Spacelines had to lengthen the fuselage enough fit the 40 ft. long Saturn S-IV stage. This was done by adding a 16 ft. 8 in. section of fuselage from a second Stratocruiser immediately aft of the wing's trailing edge. After adjusting the controls for the relocated center of gravity, they were able to move onto phase two.
This is what Clipper Constitution N1038V (c/n 15938) looked like when it was delivered to Pan American on September 29, 1949. Later it was renamed Clipper Hotspur and retrofitted as Super Stratocruiser in 1954. Clipper Hotspur was stored at New York until being traded to Boeing in 1960, then sold to Mansdorf who sold it to Aero Spacelines.
(44K JPG image)
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Parts of Boeing's YC-97J 25-2693 ( c/n 16724) Turbo-Stratocruiser, B-377s N406Q ( c/n 15945) and N408Q ( c/n 15944) were used in the construction of the Super Guppy. The majority of the parts including the wings with engines, cockpit and forward fuselage section of the YC-97J were used in the construction of the Super Guppy, but enough of N1038V was used to enable ASI to use the Stratocruiser's "N" number for registration purposes.
The Aero Spacelines 377MG Mini-Guppy began life as Boeing B-377 N1037V (c/n 15967), and delivered as Pan American Airways Clipper Fleetwings N1037V. Pan American took delivery September 8, 1949. It was traded back to Boeing in 1960, sold to Mansdorf, then to Aero Spacelines in 1963. After the purchase by Unexcelled, Inc. Aero Spacelines moved it's base of operations to Santa Barbara, California.
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Kevin Kearney
Vice President
Berlin Airlift Historical Foundation
C-54D "Spirit of Freedom" 43-17228
C-97 "Angel of Deliverance" 52-2718 (painted as YC-97A 45-59595)
C-54E/R5D-4 "Spirit of Freedom" 44-9144 BuNo 90414 (wfu April/2020)http://www.spiritoffreedom.org