Every day, hundreds of unforeseen, sudden, fast-moving, potentially dangerous situations are occurring in the aviation world, unbeknownst to the public because they are properly managed by pilots who are trained to do so. These incidents tend to be mentioned only in confidential reports. So why worry about them at all, given that aviation can boast a very low accident rate* and that ongoing efforts to improve this rate are becoming more and more onerous in terms of research and financial resources? The answer lies in the fact that, while there are very few air transport accidents nowadays, each one is highly distinctive, with specific causes and usually a high number of victims. These accidents leave a negative impression in the eyes of the general public, who are accustomed to rejecting any idea of risk.