What does Bowtie show?

How risk is shown using the bowtie tool

Bowtie is a visual tool which effectively depicts risk providing an opportunity to identify and assess the key safety barriers either in place or lacking between a safety event and an unsafe outcome.

Bowtie models are a key component of Performance Based Regulation (PBR) and provide:

  • An effective, visual depiction of risk.
  • A balanced risk overview for the whole aviation system between internal and external stakeholders (including third party risks).
  • An increased awareness and understanding of the safety risk leading to ‘Significant Seven’ outcomes.
  • The best practice guidance material for safety risk management at an operational and regulatory level.
  • An identification of critical risk controls and an assessment of their effectiveness.
  • An identification of SPIs to monitor performance of risk control.

Bowties can also be used for a variety of tasks as shown below: (You can download this diagram as a PDF).