Well it's a ridiculous system then as in effect the French prosecutor is passing a subjective judgment as to whether a crime has been committed not even a week after the crash, and whether a crime has or not been committed cannot be determined until the full "proper" aircraft investigation has been completed. So his subjective "gut feeling" will either be right or wrong and so many hares may have been set running unnecessarily. How can such a daft system be justified when in many cases the prosecutor will be wrong?