On Thu, 05 Oct 2006 11:00:14 +0200, Stefan
wrote:

Yes, from a regulatory point of view they *do* matter even to an IFR
pilot. Whether airspaces are depicted on your chart or not doesn't
matter at all, you're supposed to know in which airspace class you fly.

OK, I'll bite: What difference does it make for the conduct of my
flight whether I am in class C, D or E? As others have pointed out
already, you are required to separate yourself from every aircraft you
can see, no matter which airspace you are flying in.

Tobias