Twelve Common Human Error Preconditions

October 2016

According to Skybrary, The Human Factors "Dirty Dozen" refers to twelve of the most common human error preconditions, or conditions that can act as precursors, to accidents or incidents.

These twelve elements influence people to make mistakes. The Dirty Dozen is a concept developed by Gordon Dupont, in 1993, whilst he was working for Transport Canada, and formed part of an elementary training program for Human Performance in Maintenance. It has since become a cornerstone of Human Factors in Maintenance training courses worldwide

The original list, developed for aircraft maintenance includes the following 12 common human errors:

  • Lack of communication
  • Distraction
  • Lack of resources
  • Stress
  • Complacency
  • Lack of teamwork
  • Pressure
  • Lack of awareness
  • Lack of knowledge
  • Fatigue
  • Lack of assertiveness
  • Norms
If you would like to get more in depth knowledge on these 12 errors, it is available on the Skybrary website. 

Human Factors Safety Training

Human Factors safety training is a key element in addressing Human Factor error preconditions. The ACI Human Factors Safety Training course helps airports build strong defences against human errors by enhancing the awareness of factors that can impact performance and lead to errors.

This online course provides participants with a comprehensive introduction to the primary concepts of human factors and ensures that they can recognise, understand and prevent human errors on the airside. On completion of the course, all participants will be able to apply basic human factors strategies to their airport industry work.

The course covers the following three topics:

Section 1 – Understanding Human Factors
Section 2 – Human Factors and Airport Safety
Section 3 – Dealing with Human Factors Errors

Price: US$50.00
Duration: Approximately 1.5 hours


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