Accident Investigation

Critical Decision Method
In the Critical Decision Method a subject-matter expert is asked to recount a particularly challenging or critical incident in which his/her skills were needed. The operator is asked to provide a gen . (Read Complete Description)
Human Factors Analysis And Classification System (HFACS)
HFACS was developed as a taxonomic system to categorize both the latent and immediate causal factors that have been identified in aviation accidents. Its purpose is to provide a framework for use in a . (Read Complete Description)
Human Performance Investigation Process (HPIP)
Human Performance Investigation Process (HPIP) was developed for the US Nuclear Regulatory Commission and the safety management factors in the Management Oversight & Risk Tree (MORT) of the US Departm . (Read Complete Description)
Influence Diagram
An Influence Diagram is a method of representing the cause and effect relationships of factors that lead to errors and accidents. Their use in an interactive group session, allows experts to share the . (Read Complete Description)
Operator Action Trees (OATS)
OATS focuses on cognitive errors. This method is based on a basic operator action tree that identifies the possible post-accident operator failure modes. It differentiates among three types of cogniti . (Read Complete Description)
Procedural Event Analysis Tool (PEAT)
PEAT is a structured analytic tool that operators can use to investigate incidents and develop measures to prevent similar events in the future. It is available to operators free of charge and is the . (Read Complete Description)
Reason 5
REASON is an expert system that helps the analyst sort information about an individual problem; models and analyses the problem to get solutions; provides results to assist in the selection of the bes . (Read Complete Description)
SATORI, which means “insight” in Japanese, is a system developed by Dr. Mark Rodgers of the Federal Aviation Administration to graphically re-create the radar data recorded at ARTCC and TRACON air tra . (Read Complete Description)