The real percentage of suicides among car accidents is not reliably known ; studies by suicide researchers tell that " vehicular fatalities that are suicides vary from 1.6 % to 5 % " . Some suicides are misclassified as accidents , because suicide must be proven ; " It is noteworthy that even when suicide is strongly suspected but a suicide note is not found , the case will be classified an ' accident . ' " Some researchers believe that suicides disguised as traffic accidents are far more prevalent than previously thought . One large-scale community survey in Australia among suicidal people provided the following numbers : " Of those who reported planning a suicide , 14.8 % ( 19.1 % of male planners and 11.8 % of female planners ) had conceived to have a motor vehicle " accident " ... Of all attempters , 8.3 % ( 13.3 % of male attempters ) had previously attempted via motor vehicle collision . " Between 1983 and 2003 , 36 pilots committed suicide by aircraft in the United States . There have been well documented suicide attacks by aircraft , including Japanese Kamikaze attacks , and the September 11 attacks . On 24 March 2015 , Germanwings co-pilot Andreas Lubitz deliberately crashed Germanwings Flight 9525 into the French Alps to commit suicide , killing 150 people with him
September 11 attacks
September 11 attacks
Suicide methods