I'm very new to ADE and my goal is to update airports to receive AI traffic. I am interested in smaller airports that have no traffic. I have been reading the ADE manual and working with the program to see what I can do. At this point I have figured out how to create parking spots, runway length, and taxi links. I also added Hold-Short nodes to each end of the runway. When I add AI they appear on the parkiong spaces but after a few seconds they disappear. ADE165 is the version I am using. Any advice is welcome. Dan C. My operating system is a Windows7. FSX Acceleration with the SDK installed.