5M model
The 5M model is a troubleshooting and risk-management model used for aviation safety.[1][2]
Original labels[edit]
Based on T.P. Wright's original work on the man-machine-environment triad[3] at Cornell University, 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[edit]
These have been expanded by some to include an additional three, and are referred to as the 8 Ms:[4]
- Material (includes raw material, consumables, and information)[5]
- Method / mother nature (process, environment)
- Maintenance
Other uses[edit]
This is also used in more general troubleshooting or root-cause analysis, such as with the Ishikawa diagram.[6]
References[edit]
- ^ Cusick, Stephen K.; Wells, Alexander T. (2012). Commercial aviation safety. McGraw-Hill Professional. ISBN 978-0-07-176305-9. OCLC 707964144.
- ^ Ballesteros, J.S.A. (2016). Improving Air Safety Through Organizational Learning: Consequences of a Technology-led Model. Routledge. ISBN 978-1-317-11824-4.
- ^ Stolzer, A.J.; Goglia, J.J. (3 March 2016). Safety management systems in aviation. Routledge. ISBN 978-1-317-05983-7. OCLC 944186147.
- ^ Bradley, Edgar (3 November 2016). Reliability engineering: a life cycle approach. CRC Press. ISBN 978-1-4987-6537-4. OCLC 963184495.
- ^ Weeden, Marcia M. (1952). Failure mode and effects analysis (FMEAs) for small business owners and non-engineers: determining and preventing what can go wrong. Quality Press. ISBN 0-87389-918-0. OCLC 921141300.
- ^ Crutchfield, Nathan (2008). Job hazard analysis : a guide for voluntary compliance and beyond : from hazard to risk: transforming the JHA from a tool to a process. Elsevier/Butterworth-Heinemann. ISBN 978-0-08-055416-7. OCLC 182759248.