The most common occurrence type for Class C accidents and serious incidents over 10 years were:
- taxiing collision: 4 accidents and 10 serious incidents
- runway excursion: 4 accidents and 9 serious incidents
- near collision: 12 serious incidents
The most common occurrence type for Class D accidents and serious incidents over 10 years were:
- near collision: 96 serious incidents
- hard landing: 31 accidents and 8 serious incidents
- runway excursion: 16 accidents and 18 serious incidents
The top 3 taxonomies for Class C incidents were:
- birdstrike: 73.3%
- loss of separation: 5.4%
- runway incursion: 5.4%
The top 3 taxonomies for Class D incidents were:
- birdstrike: 57.2%
- runway incursion: 22%
- runway excursion: 6.3%