Military AI Works

Hey!
I have the Alphasim Hawker Hunter for FS9 and a repaint in Belgian colors. I want to use that repaint as an AI aircraft. I experimented with various air-files, but none of them was able to let it fly the correct way as was planned in the ai flightplan.
What can I do in order to get this modified aircraft flying perfectly as AI?
Jive1 - Belgium

Two options I can think of. Try the FDE from my AI Hunter, if you haven't done that already. Repaint my Hunter in Belgian colours.

John

Oooh yes, Belgian Hunters. That is a nice thought.

Thank you, John,
I've tried your air-file already once, and did now a second time. Same rusult...
Anyhow that air-file is the best of all that I've tested.
The aircraft flies perfectly the planned way of the AI flightplan, except at the end, when it intends to go in landing direction, then suddenly short before entering the line straigt to runway, it becomes unstable and dives to the ground and crashes a few miles before the runway...
Can you please say something that could be done here?
Jive1 - Belgium

Have you have changed both the air file and the aircraft.cfg file?