Hi Dick,Some time later today, I'll test it again, and note exactly how I'm doing it and post it.Patrick

bump... just one time

Hey guys,Sorry for the delay, but I wasn't feeling that great, and what little energy I had went to other things. Back soon with my data.Stick

I now found a solution at least for the helipads that I am using. The helipads become stable (in FS2004) when a runway is placed somewhere on the ground (or water surface) near them.

Yes, I have it on good authority that placing a larger pad at ground level under the primary pad also works. I've been so busy developing a new product called LaunchControl, that I haven't had any time to test it yet.Also, I mistakenly believed that I had to turn on the "flatten" switch thinking this flatten the mesh, when in reality if flattens the mesh of the model you are compiling, not the terrain!Stick