I have added a few aircraft downloads to my FSX like the NWA A321, Delta 737. What I would like to know is how I get them to appear at the airports even when I am not using them. All the original aircraft like, Orbit ect... show up, but not the downloads. What can I do. Thanks for your help.
You need AI programs like these. Some free some pay.
Ultimate traffic to me is the best and easiest.
https://flyawaysimulation.com/downloads/files/726/project-ai-v25/
Traffic X from Just Flight:
https://www.simshack.net/products/traffic-360-ai-traffic-fsx-prepar3d-688
Sorry, I did 2004 not FSX, thanks for catching that.