James,
Great job explaining my "replica" comment. I don't know if I can do any better. I will, however, add a few thoughts.
People involved in historic preservation use a typology in which words like "original", "restoration", "reproduction", "replica" and "mock-up" have specific meanings. There is some variation in the use of these terms. James, I have heard the definition of "replica" which specifies that it must be built by the original builder, but that condition is not universal and I think my usage would be seen as valid in the trade. I might have said "reconstruction" instead; that might be a little less controversial. Also, I fudged by saying "part replica"; these terms, as you know, are not generally applicable only to portions of an artifact.
The best resource that I know of in the aviation area is Mikesh's "Restoring Museum Aircraft." Honestly, you cannot even have an informed discussion about airplanes in museums until you have read this book or something much like it (and I don't know of anything much like it in the aviation area). Another resource, which I agree with in general outline but perhaps not in all specifics, is TIGHAR's Guide to Aviation Historic Preservation Terminology,
http://199.236.90.155/Projects/Histpres/guide.html. We all know that TIGHAR has a fairly lame (i.e. nonexistent) record of actually recovering and preserving historic aircraft, but that does not mean that their thinking on this subject is not sound. TIGHAR uses the specific example of Shoo Shoo Baby and concludes (and I agree) that it is "not an original nor is it a restoration. It is correctly described as ... a composite rehabilitation to factory condition." From what I have heard, the Belle is destined to be a "reconstruction" by their definition, and by mine. I was hoping that it would be a "restoration," but everyone's statements about the amount and nature of work being done on it suggest to me that it has deteriorated too far to restore (i.e. it cannot be brought to display condition without substantial introduction of new material, especially internally).
Much more extensive development of these terms than either Mikesh or TIGHAR has been done in more established, non-aviation museum communities, and the aircraft preservation field has been slow to grasp these concepts, with unfortunate consequences for the preservation of our aviation heritage.
James is also bang on target about the "keynote". Terms like replica and reproduction should not be seen as derogatory. The condition of the original artifact is often such that those are the only available options. The key is documentation and provenance -- recording exactly which pieces of the artifact, down to every rivet, are (1) original to the airframe as of a given reference date, (2) replacements taken from other airframes, and by whom, and when, and (3) newly fabricated or adapted from other sources. This "back office" record-keeping is why one cannot just visit a restoration hangar and see for himself whether the restoration is being done properly; the museum's filing cabinets and disc drives are equally as important. The number of photos and records being made of the Belle as it is restored should run into the hundreds of thousands, if not millions. The NASM does this. I have no idea whether the NMUSAF does, but I doubt it does to the same extent as NASM. I'm quite sure Fighter Rebuilders hardly does it at all. It greatly increases the time and expense of a restoration, and I believe that is one reason why other museums are able to put new airplanes on the display floor more frequently than the NASM does. But when you look at the NASM product you know that you are looking at the best preservation work being done on airplanes today, and two hundred years from how, the NASM restorations (and their all-important documentation, which hopefully will survive) are the only ones currently being done in the U.S. that will furnish a reliable guide as to exactly what 20th-century airplanes were really like.
To address your comments specifically Mustangdriver: (1) we'll agree to disagree on whether airplanes have souls; (2) there is a big difference between "replica" and "mock-up", mainly that replicas adhere to the original materials, methods of construction, etc. while mock-ups do not, so I am not comparing anything at NMUSAF to a plastic model; (3) the issue of the replacement of wings and tail has everything to do with the "reference date" of the artifact and would be an interesting subject itself if you wish to pursue it; (4) I do think I could actually be of some assistance with the documentation end of things, and one day when I have more time I probably will help out a museum in that end, although I am not sure that I will choose to donate my time to one of the wealthiest organizations in the world. The USAF has enough money to blow away the NASM's restorations or those of any other organization, and I would be the first to vote for one less B-2 bomber to fund a lifetime's worth of first-rate restorations (maybe some of them even flying).
August