Maybe someone got to this before me, but I noticed some very bad grammatical mistakes on the "expert's" site within two paragraphs. We often spend too much time correcting each other here, but I find Mr. Yurman's site inexcusable and pathetic. It's been said before: Language is the first impression people give off. How you speak and write always forms an opinion in your audience. So grammar police, have at our "aviation expert."