The composition of the investigation board is influenced by what factors?

The composition of the investigation board is primarily influenced by the severity of the incident and the appointing authority. When an incident occurs, its seriousness typically dictates the level of scrutiny and expertise required for the investigation. More severe incidents may necessitate a larger, more specialized board to ensure that all factors are thoroughly examined and that proper measures can be taken to prevent recurrence. The appointing authority, which is often a higher management body or regulatory agency, determines who will serve on the board based on the incident's nature and the necessary expertise needed to address it effectively.

The other factors, while they may play a role in the overall context of an incident, do not directly influence the composition of the investigation board in the same way. Public opinion and media coverage can affect perceptions and pressure responses but are not decisive in forming the investigation team itself. Historical accident data can inform best practices and preventative measures but does not directly dictate who will serve on the board. Similarly, while availability of personnel is a logistical consideration, it is secondary to adequately addressing the needs of the incident based on severity and the authority's requirements.