*1.3. Scope*

The accident rate in aviation is very low. The EU member states' accident statistics for each domain can be seen in Table 2 below. Global statistics also show similar trends [9]. It is clear that accident rate in commercial air transport is much lower than non-commercial operations. The analysis of all accidents and serious incidents (including non-commercial and military events) related to aircraft maintenance could have produced a larger data set and potentially revealed interesting and beneficial results; however, there are considerable differences between how large commercial aeroplanes and small airplanes involved in non-commercial operations or military aircraft are maintained.

**Table 2.** Cross-Domain Comparison of EASA MS Aircraft Fatal Accidents and Fatalities, 2008-2018 (Annual Safety Review 2019 [1] (p. 27)).


Considering the problem statement described in the introduction, and the aim and objectives defined above, the scope of this study was determined to be limited to the global commercial air transport accidents and serious incidents related to aircraft maintenance and continuing airworthiness.
