Thanks for the link Choks Away. Hopefully this provides for a good tool to work with. However today thousands of airliners fly over conflict areas without a problem, some even work in and out of conflict zones. While reducing the risk of getting shot down, this tool won't remove the possibility totally and to work would need tight co-operation with government intelligence agencies and militaries, some of whom might not be interested in providing information on equipment they might have given to the combatants.
I find it interesting how any website having discussion forums on Ukraine or MH17 is infested with pro-Russian views, clear Russian trolls and foilhat conspiracy theorists implicating CIA, NSA, USA, chemtrails and not to forget the worldwide zionist/fascists conspiracy that is clearly behind this heinous act or repeating the Russian propaganda on SU25's as well as muddying the waters with half truths, misrepresentations and clear lies.
One must be careful when reading the material originating from St.Petersburg troll factories. At first glance it can look quite convincing, but digging into the material shows it to be trash. Unfortunately it's this stuff that is spread in various BB's around the world.