+1 on DARKSTI's comments...
Air Racing is kinda where F1 was back in the 60's. Whereas F1 had the opportunity to make tracks and cars safer, air racing is kinda foiled by the laws of physics as far as bumping up crash survivability, simply because a plane that can survive a 500 mph crash tends to be too heavy to fly.
While the pilots know what they're getting themselves into, the loss of these folks is still tragic, especially since it likely won't lead to safety improvements, it will lead to the termination of the sport.