Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. document genres
7. [documents by function]
8. reports
9. administrative reports
10. [administrative reports by function]

Anotations

Scope note:

Official or formal records of an investigation related to an unexpected happening, in the form of documents containing presentations of facts, proceedings, investigations, or an outline of events preceding the accident.