Your definition of "clearly" is very different than most people's I think... Sure, if you separate the word Aircraft in to "Air" and "Craft" you might be able to argue that one of the words could mean a manned vehicle. But when taken as a single word "Aircraft" has nothing to do with being manned or not. Every definition I can find is basically "A vehicle capable of atmospheric flight due to interaction with the air, such as buoyancy or lift."
Your argument really feels like the kind of games sovereign citizens and other conspiracy theorists play when they find "loopholes" in the law that will make them rich or allow them to not pay taxes.