Design and Implementation of a Software Tool for Human Factors Accident Investigation and Classification (PCTACT)


  1. Edwards, J.L.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN)
A software tool was designed and implemented that leads accident investigators through the steps of a Systematic Error and Risk Analysis (SERA), a classification scheme based on Perceptual Control Theory and developed at DRDC Toronto. The software presents an investigator with a series of questions about an accident and generates conclusions about the nature of the failure and its probable pre-conditions. A graphical depiction of the decision tree allows users to navigate easily among the steps of the analysis. At the end of the process, the software produces a report detailing failures and pre-conditions, and providing equivalent terminology from the AGA 135 HFACS classification scheme. A help system was developed that makes context-sensitive help available to the user at various stages of the process. In preliminary work to lay a foundation for intelligent aiding, users' activities are tracked by the software in a way that can be used in future to provide intelligent and adaptive help. To illustrate the potential use of the tracking mechanism, the software was designed to monitor user actions and offer help whenever there is a long delay without input.

Il y a un résumé en français ici.

SERA (Systemic Error and Risk Analysis);Human engineering tools
Report Number
DRDC-TORONTO-CR-2002-168 — Contractor Report
Date of publication
01 Jan 2002
Number of Pages
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: