What happened
No aviation occurrence was described in the provided source text. The input material consisted solely of a technical definition regarding how the ATSB categorizes contributing factors and other risk-increasing elements within its investigation reports.
The investigation
Because no specific accident or incident was provided for analysis, no investigation details, aircraft registrations, or flight sequences could be processed. The source text only outlines the methodology for distinguishing between contributing factors and other findings intended to enhance safety awareness without assigning liability.