Some more images of a B-52 fin folding here:
https://www.barksdale.af.mil/News/Fe...d-fix-and-fly/
Originally Posted by DaveReidUK
I'm strugging to get my head around the image of folding a 720's fin to get it into the hangar. Clearly, as can be seen from the KC-135 photo, fin attachments aren't designed to be capable of supporting the weight of the fin when it's folded (hence the crane).
I think that the crane is there to support the weight during the process, as for how it is supported when it's folded, I cannot answer that question. I cannot point to the source right now but I'm pretty sure I've read in various places that the early, larger fins on the 707 family supported the fin folding so that it could fit into the hangars of those days, or perhaps even as a result of its military pedigree in the C-135 programme.