Jane's Combat Simulations - F-15

Fly any plane:
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* Go to the mission builder, and create a mission. Click on "Add plane" if
  there is not already one on the runway. Then, right click on the plane 
  icon. Change the aircraft type from the normal F-15E to any plane in the
  game (Su-27, MiG-29, 707, etc.) Note: The plane that is selected will
  still look like the F-15E on the inside. Press [F8] to switch to the 
  outside view to see the aircraft. Additionally, the plane will still 
  perform like the F-15E, allowing you to do barrel rolls and loops in 
  a 707. 

* 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. 


Flip and land:
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Go to "Training", then go to "Take off" and "Nav". When asked you to take
off, set the throttle to 100%. Then, release the brakes and pull up. Do 
not stop pulling up. You will do a flip and appear to crash, but strangely
just land. 
Note: Pull up as soon as you release the brakes.