Well, here's another topic that I've never seen before.
The only problem with the collision model, is that most people can't understand how it works.
This was the topic that made Pyro change his icon to that painting, "The Scream"
Valdals, this issue has been explained so many times that it's induced near catatonic gibbering among many. The horse is not only dead, but it's been reduced to constituent cells...and the cells have all ruptured, the organelles are destroyed, and the molecules have been broken down to individual atoms.
In other words, Hub is right. I'd suggest you try that old "search" button and find any one of the half million or so threads on the subject of collisions. Look for Bronk's posts with the big pictures -- they do a nice job of showing why things have to be done the way they are.
THe short answer is run into other planes, and don't get close enough to other planes that they can hit YOU. In other words, fly more like a real pilot who's survival depends on his plane! That one change will stop 99% of all collisions.