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Occurrence Categories
As shown in Figure 60, the Other occurrence category remained the largest occurrence category in the ECR in
2014. System/Component Failure Non‑Powerplant (SCF‑NP) is the second most prevalent occurrence category
under,followed by ATM/CNS, Ramp and Birdstrikes.
´
´
Figure 60:
Top 10 occurrence categories within the ECR
29,301
11,647
11,104
9,343
8,175
6,821
6,472
4,291
3,672
2,817
0
5 000
10 000
15 000
20 000
25 000
30 000
35 000
OTHR
SCF-NP
ATM RAMP
BIRD ADRM SEC
MAC
UNK
SCF-PP
ECR Data Quality
Figure 61 provides information on the attribute usage trends within the ECR with respect to the common
mandatory data fields as listed in Reg. (EU) 376/2014 and covers the ten‑year period 2005-2014. State/Area of Oc‑
currence is the data field that had a significant increase in usage up from 32.5% in 2005 to 82.8% in 2014. During
the same period, Location of Occurrence usage rose from 55.4 percent in 2005 to 85 percent in 2014, and Event
Type usage rose from 41.1% in 2005 to 62.1% in 2014. At the other end, use of the data field UTC date attribute
fell significantly from 94.7% in 2005 to 77% in 2014.