| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 850 |
2.9%
|
| 1 | Over precipice | 378 |
1.3%
|
| 2 | Unattended runway animal | 186 |
0.6%
|
| 3 | Straying unattended animal drawn vehicle | 34 |
0.1%
|
| 4 | Forced off road | 1732 |
5.9%
|
| 5 | Struck by animal | 15 |
0.1%
|
| 6 | Struck animal | 218 |
0.7%
|
| 7 | Other unusual features | 1325 |
4.5%
|
| 8 | No unusual features | 24598 |
83.8%
|