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The Human Factors Taxonomy is a high-level categorization of human factors concepts. The structure of the taxonomy includes a main category definition to identify the overall human factors concept, and sub-categories to further define more specific concepts that are mutually exclusive but related to the main concept. The structure of the taxonomy was developed to support the mapping of common human factors concepts identified as in use across the aviation industry as well as aid organizations in the categorization and analysis of their internally maintained data sources.
In reference to the development of this taxonomy, the term human factors is defined as a set of concepts that describe an individual’s performance in relationship to their environment. These factors include psychological, physical, procedural, cognitive, organizational, and environmental concepts, all of which include characteristics that may influence how an individual performs in their working environment. The current version of this taxonomy focuses on flight operations as the targeted working environment. It should also be noted that the taxonomy is designed to be used as a general reference for both positive and negative influences a given factor may have on an individual’s performance.
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Another important element of the human factors taxonomy design is it permits multiple categories to be associated with a single identified safety event. For example, the occurrence of a safety event may be associated with an individual’s decisionmaking, level of fatigue and operational experience. Multiple categorizations allow each human factor concept to be investigated as part of a set of factors that may have contributed to the occurrence of the identified safety event.
This version of the Human Factors Common Taxonomy focuses on the human factors of flight operations. Future updates will cover other aircraft operations. Contact points for all CICTT work is:
CICTT@intlaviationstandards.org
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ENVIRONMENTAL/SYSTEM DESIGN (ENVR)
Factors related to the interaction of flight crew and the operating environment, operating conditions, and system design.
Includes the following sub-categories:
 Operating Environment/Design: Factors related to the infrastructure features of the environment setting, such as airport or aircraft design, navigational coverage or characteristics of a system.
 Physical Environment: Factors related to the physical characteristics of the work setting, such as terrain or runway surface.
 Environmental Conditions: Factors related to the environmental conditions, weather, or other phenomena.
 Task Environment/Design: Factors related to the physical workspace environment, such as aircraft design, features and functioning, adequate warnings and alarms or exposure to noise and vibration.
Usage Notes:
 This category is used to capture external factors that can affect flight crew performance such as the characteristics of an environment, infrastructure, or system that induces an operator error or supports or impedes the completion of a task.
　
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