Jane's Combat Simulations - F/A-18 Simulator

Fly different aircraft:
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Go to make your own mission. Your aircraft should be listed. Delete 
what it says is you. From here, click "Add Aircraft". Select what you 
want to fly from the list. Select any other information and then click 
the "Computer Controlled" box to change it to "Human Controlled" if it 
already is not listed as such. 
Add what you want , save it, and fly it in the missions menu.