In 2018-19, we changed our event classification policy, and launched a new product we call a category 4 investigation, a strictly factual investigation that involves little or no analysis. The board provides no findings or conclusions, although it reviews and approves the report. The purpose of those investigations is solely to inform the public in a factual way about what happened in an accident, and to make industry aware of safety. We conduct this sort of investigation mainly in the aviation sector, particularly for recreational flights. We would not have investigated or reported on those cases in the past. However, we are now in a position to conduct a quick investigation and submit a final report to communicate the results to the aviation community.
On February 25th, 2019. See this statement in context.