Hi! Thanks for PM, I will reply here.
To make a script work you have to give it the same name as the mission file name. Check out a link #2 in my sig for basic instructions.
Then you may wish to study a zip archive attached here
http://forum.1cpublishing.eu/showthread.php?t=26523
I do not think you can rely on scripts for your purpose because mission script depends on mission maker and when playing online it is server side only.
I think you should make an add-on that will work client side but the problem is if you can get RPM, speed or other parameters when flying online it can give you unfair advantage and that is why this is not possible.
Try getting in touch with CloD producer, head of MG Ilya Shevchenko aka luthier via mail
ishevchenko@1cpublishing.eu or in this forum thread
http://www.sukhoi.ru/forum/showthread.php?t=72803 Maybe he explains to you how to make a client side add-on or agrees to include support for your device into the game.
I do not know how to make an add-on but maybe someone can also help if you ask in this section
http://forum.1cpublishing.eu/forumdisplay.php?f=203