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To accomplish its objectives, CICTT has developed the following common taxonomies and definitions: Phase of Flight; Occurrence Categories; Aircraft Make/Model/Series tables; Engine Make/Model tables; and a detailed taxonomy for accident/incident data systems.
It is important to note that CICTT does not expect governments, international organizations, and corporations to immediately change existing data systems or existing definitions. The intent is to provide “target” taxonomies and definitions for adoption by organizations planning for, and implementing new safety systems.
The Positive Taxonomy is a high-level categorization of positive concepts. Each concept contains a main category definition to identify the overall positive factor as well as sub-categories to further define the factor and aid in analysis and coding. Positive factors make it possible to record what went right in the analysis of an occurrence. It is also possible to codify multiple positive factors within an occurrence.
The Positive Taxonomy aims at better identifying all the technical and human factors safety nets and assessing the effectiveness of each one. To summarize, it considers the human factor as a safety factor, enables recording the functioning of effective system safety nets and successful human interventions in databases. In the long term, their global analysis will represent safety indicators that will help in better assessing the effectiveness of previous safety measures with the objective of increasing the resilience of the aviation system.
Contact point for all CICTT work:
CICTT@intlaviationstandards.org
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DECISION
Positive factor related to decision. Any decision taken that helped in avoiding an accident or contributed to limit the consequences. AVOIDANCE MANOEUVRE
Decision to perform an avoidance manoeuvre on ground or in flight after the visual detection, or detection on ACAS, of the other aircraft. For example, this category also encompasses decisions to execute a taxiway excursion to avoid other aircraft. DECISION TO GO-AROUND
The reporter decided to go-around and safely landed. DECISION TO LAND AS PRECAUTION
This factor includes decisions to land as a precaution outside any aerodrome boundaries with or without emergency conditions. An example would be an interruption of the flight in relation with an adverse environment. DECISION TO LAND ON AN UNEXPECTED RUNWAY
This factor includes decisions to execute landings on an unexpected surface, such as a secondary runway, a grass runway or a surface included within the aerodrome boundaries. DECISION TO REJECT TAKEOFF
This factor includes decisions to reject a take-off, before or after starting the take-off roll, when a flight was cancelled, postponed or delayed in order to correct a situation for a higher safety level.
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DECISION TO RETURN TO DEPARTING POINT OR TO DIVERT
This factor includes the decision to return to the departure or alternate aerodromes after a flight interruption (often during initial climb).
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POSITIVE TAXONOMY DEFINITIONS AND USAGE NOTES(2)
