According to a General Aviation Fatal Accidents Data Listing Report conducted by the U.S. Department of Transportation (DOT) and the Federal Aviation Administration (FAA), the average number of general aviation and nonscheduled fatal accidents is between 319 and 385 per year. That reflects only a portion of total number of aviation accidents that occur each year.
The FAA governs a wide variety of activities in relation to aviation in the USA: from flight operations, aircraft manufacture and pilot activity. The vast majority of aviation accidents occur at a relatively low height – either before, during or after take off or landing. A much smaller number of crashes occur in mid-flight. After a crash, the National Transport Safety Board, amongst other authorities, investigate what caused the accident although these findings are not permitted to form part of any subsequent court proceedings.