The National Transportation Safety Board tracks the incidences of aviation accidents in the United States. Part of its responsibility is to determine the causes of these accidents. Analysis of the main causes of accidents can be helpful in identifying situations in which negligence may be a contributing factor.
According to the NTSB accident data, the most common cause of aviation accidents that results in injuries may have little to do with pilots, aircraft manufacturers or ground personnel. That cause is air turbulence.
Other sources of aircraft accidents, however, are more easily connected with human error.