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The 5M model is a troubleshooting and risk-management model used for
The 5M model is a troubleshooting and risk-management model used for aviation safety
Aviation safety is the study and practice of managing risks in aviation. This includes preventing aviation accidents and incidents through research, educating air travel personnel, passengers and the general public, as well as the design of airc ...
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Original labels
Based on T.P. Wright's original work on the ''man-machine-environment'' triad atCornell University
Cornell University is a Private university, private Ivy League research university based in Ithaca, New York, United States. The university was co-founded by American philanthropist Ezra Cornell and historian and educator Andrew Dickson W ...
, the 5M model incorporates a diagram of 3 interlocking circles and one all-encompassing circle. The smaller circles are labeled ''Man'', ''Machine'', and ''Medium''; the intersecting space in the middle, where they all meet, is labeled ''Mission''; while the larger circle is labeled ''Management'':
* Man (people): including the physiology and psychology of those involved, as well as their performance and proficiency.
* Machine (equipment): including the design, manufacture, maintenance, reliability, performance, etc.
* Medium / measurement (environment, inspection): including weather, terrain, obstructions, lighting, etc.
* Mission (purpose): the reason these three factors are brought together.
* Management (leadership): the prevailing supervisory approach in terms of regulations, policies, procedures, and attitude involved in establishing, operating, maintaining, and decommissioning.Expansion
These have been expanded by some to include an additional three, and are referred to as the 8 Ms: *Material (includes raw material, consumables, and information) *Method / mother nature (process, environment) *MaintenanceOther uses
This is also used in more general troubleshooting or root-cause analysis, such as with theIshikawa diagram
Ishikawa diagrams (also called fishbone diagrams, herringbone diagrams, cause-and-effect diagrams) are causal diagrams created by Kaoru Ishikawa that show the potential causes of a specific event.
Common uses of the Ishikawa diagram are produc ...
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References
{{reflistSee also
*Ishikawa diagram
Ishikawa diagrams (also called fishbone diagrams, herringbone diagrams, cause-and-effect diagrams) are causal diagrams created by Kaoru Ishikawa that show the potential causes of a specific event.
Common uses of the Ishikawa diagram are produc ...
Aviation safety
Quality control tools