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Related Experiment Video

Updated: Jun 16, 2026

Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification (ADCI) and Dose Estimation
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Published on: September 4, 2017

Evaluation of the HFACS-ADF safety classification system: inter-coder consensus and intra-coder consistency.

Nikki S Olsen1, Steven T Shorrock

  • 1Department of Aviation, The University of New South Wales, Kensington, Sydney, NSW 2052, Australia.

Accident; Analysis and Prevention
|February 18, 2010
PubMed
Summary

The Australian Defence Force

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Published on: September 4, 2017

Area of Science:

  • Human factors in aviation safety
  • Incident analysis methodologies
  • System reliability and validity

Background:

  • The Human Factors Analysis and Classification System (HFACS) is widely used for incident analysis.
  • The Australian Defence Force (ADF) adapted HFACS for its specific operational context.
  • Reliability of adapted systems is crucial for accurate incident investigation.

Purpose of the Study:

  • To evaluate the reliability and validity of the ADF's adapted HFACS (HFACS-ADF) for incident classification.
  • To assess the consistency of HFACS-ADF application within an Australian Defence Force air traffic control (ATC) unit.

Main Methods:

  • Three field studies were conducted to assess inter-coder and intra-coder reliability.
  • Incident reports from an ADF ATC unit were analyzed using HFACS-ADF.
  • Participant surveys were used to gauge confidence in the system's consistency.

Main Results:

  • Low agreement was found between coders and within coders at both detailed and broad category levels.
  • Participants expressed low confidence in the consistent usability of HFACS-ADF.
  • The reliability of HFACS-ADF for incident analysis in the studied ATC unit was found to be low.

Conclusions:

  • The ADF's adaptation of HFACS is unreliable for incident analysis within the examined air traffic control unit.
  • The findings suggest potential invalidity of HFACS-ADF in this specific context.
  • Issues may stem from the HFACS model, its ADF adaptations, operational context, or study conduct.