When we conduct an investigation, we look at all the standards that are in place, such as the international standards, the regulations, and the number of factors involved in an overrun.
A number of factors are involved in a runway overrun. Some of them have to do with the aircraft travelling too fast on landing. Some have to do with mechanical problems with the aircraft, some with weather problems, tail winds, for example. Some of them have to do with runway surface conditions, ice and snow, unstabilized approaches, air traffic controllers. Every accident is different, and we look at all those symptoms.