Lomcevak - from your description of your requirment's,any regional airline in europe fit's that bill.
It is still commercially sensitive information that you are asking about - and i dont think you will find that any one will give you this information as no-one would like there competitors to know what system they are useing - not only that you may be a hacker and could be able to hack into someone's system and destroy it etc , hence why everyone is being cautious to reply to you.
Your best bet would be if you make a formal request to the airline's that you are interested in - stating why you need the information and then they might let you know if they think you have a pluasable reason for wanting to know.
hope this help's
brgds
W.G