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Type of Operation
Figure 57 provides details on the number of occurrence reports per operation type that were integrated into the
ECR during the period 2013 – 2014. Records where the operation type attribute had not be filled were excluded
from the data. Commercial Air Transport is the leading operation type in the ECR and accounted for 83.6 percent
of the occurrence reports in 2014, down from 88.5 percent in 2013. General Aviation accounted for 10.7 percent
of the occurrence reports in 2014, up from a value 6.6 percent in 2013. There were no changes in percentage of
Aerial Work, which accounted for 0.6 percent of the occurrence reports in 2014 and 2013. State Flights account‑
ed for 2.2 % of the occurrence reports in 2014, up from a slight increase than in 2 1.5% in 2013. Finally, the use of
the unknown attribute accounted for in 2.9 percent of the occurrence reports in 2014, which is a slight increase
when compared with the previous year.
´
´
Figure 57:
Distribution of occurrence reports integrated in the ECR by type of operation
88.5%
6.6%
0.6%
1.5%
2.8%
83.6%
10.7%
0.6%
2.2%
2.9%
0%
20%
40%
60%
80%
100%
Commercial Air
Transport
General Aviation
Aerial Work
State ights
Unknown
Number of occurrence reports
Type of operation
2013
2014
Occurrence Class
Figure 58 provides information on the occurrence reports that were integrated into the ECR in 2013 and 2014
based on the occurrence class attribute. Records where the occurrence class attribute had not be filled were ex‑
cluded from the data.
The largest class in 2014 was that of “Incident” which accounts for 74.8% of the occurrence reports integrated
into the ECR in 2014. Occurrence Without Safety Effect accounted for 19% of the occurrence reports that were
integrated into the ECR in 2014. “Not determined” accounted for 5% of the occurrence reports up from 3.7% in
2013. The “Accident” and ”Serious Incident” occurrence classes, which are an important source of safety informa‑
tion for aviation community, accounted for 1.69% of the occurrences that were integrated into the ECR in 2014.
This represents a slight decrease when compared with the previous year.