The closest biz jet airport is FDH Friedrichshafen in Germany 60 miles.
However Lugano Airport in Switzerland is 71 miles, they have a website and lots of biz jet photos, I believe they will be able to answer any of your questions, and if not, direct you to who can. Lugano is a small airport, so I would assume the majority would use Zurich?
Their contact info is on this page; avilu.ch/html/photo_gallery.html
This is their biz jet gallery;
gallery.avilu.ch/gallery/slidesh … usinessjet
Just a note; Zurich is 72 miles, Innsbruck 77 miles, and Milan 97 miles from Davos. If your going over there, have a great trip…