Page "Dyna-Flytes" Paragraph 15
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Some aircraft in the Dyna-Flites series were issued using an incorrect name ( e. g. the Sikorsky S-55 was actually an S-58 ) or omitted the manufacturer's name ( e. g. the ' Huey copter ' is correctly a Bell UH-1B Iroquois / Huey ).
This would become standard in later years, but it's also a way to distinguish between the A102 F-100 and it's replacement, the A102A C-5 Galaxy.
These suffixes were not included ( except for the A ) on the item itself, but were listed in catalogs.
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