CtD´s are still there since the last betapatch until now with the hotfix -.-
Have the newest NVIDIA drivers installed. Maybe I should try the beta drivers for this beta game

But I HAVE to mention that I enjoy the time I can stay in the game!!
edit:
Ok now i have installed the latest NVIDIA betapatch and i was able to play a whole mission including start and landing without a crash. Maybe it was a driver issue. All people with the same problem as i had could try this too.