Published date: 22 August 2022


This AC describes an acceptable means of compliance, when investigating and submitting occurrence investigation reports, to meet Civil Aviation Rule Part 12 Accidents, Incidents, and Statistics.

Related rules

This AC provides general guidance for occurrence investigation.

Change notice

Revision 2 is a substantive rewrite which, among other things:

  • Updates content to reflect related ACs, AC12-1 and AC100-1, which have had new revisions since the previous revision of this AC.
  • Revises Appendix A to reflect the form CAA005i, Occurrence Investigation Report.
  • Adds references to an AC from Transport Canada which contains a lot of relevant tips and guidance, and
  • Adds a Version History to make changes easier to track.