Technical information in the wrong hands is useful for

t-e-r-r-o-r-i-s-t-s.

Hopefully, you're what you say you are...an artist. But who knows on a free blog?

Flight International does very cool cutaway drawings (if they're still in publication). That might be a place to start. If no longer being published, you might find some in a public library.

(And I don't think they are technically detailed enough to be useful to a terrorist).

Care to elaborate on your art project, and why a technical layout is required?