The safety regulations were document published in December 2010 with the name of Safety Management Manuel. After this year civil aviation accident rates have decreased dramatically. The purpose of this study is to find the reasons for civil aviation accidents by segmenting into the selected parameters in a 40-year time period starting from the crew resource management concept. These selected parameters are the number of passengers (billion), event date, investigation type, injury severity, aircraft damage, amateur-built, engine type, the purpose of flight, weather condition, and phase of flight. In the analysis, related to the purpose of flight, it is found that general aviation has a higher proportion according to accident and incident rates than other modules. In the phase of flight, it is found that the landing phase is the most frequent one among accident and incident rates. In the logistic regression analysis, the 1 unit change in the number of engines increases incident rates by 3.817 (OR) units according to accident rates. In light of this result, it can be said that when the number of engines is increased, the fatality of the events is decreased.