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2-The 5 why

The 5 why Help to identify the root causes of the problems.

The Factor Tree analysis

The FTA is a tool that allows, through a structured approach, to identify the root cause of a problem.

The Shainin method

Rather unknown outside the United States, the Shainin method is a problem-solving tool based on statistical findings. It is particularly well suited for problems related to parts assemblies.

The Kepner Tregoe method

The method of Kepner Tregoe the peculiarity of highlighting the logical process of thought to follow and puts the tools in their place. It offers a suite of tools to help with problem solving and decision making.

The 8D

8D is an 8-step problem-solving methodology (“Disciplines”).


A powerful tool to solve problems, the QRQC is particularly deployed in the Automobil sector

The PM analysis

PM analysis is a problem-solving tool that is particularly used under the “Quality Maintenance” pillar of the TPM approach.

The 9D

Centered on the heart of the problem, this method applies very well in companies that already have a well structured and deployed approach.

The 9S

The 9S method is a problem-solving method described in the European standard-en 9136 by IAQG (International Aerospace Quality Group), the institution in charge of continuous quality improvement for the aerospace and defence sector. This new standard published in 2018 is an improvement of the ISO 9100 standard.


The MAXER method is a method for resolving French maintenance problems. It was developed in the years 1970 by a consultancy firm on behalf of Michelin.

The reality charting

Reality charting is a problem-solving method. Beyond a simple 7-step process, it is essentially a visual tool for managing a problem-solving process

The Human Factors Analysis and classification system

The Human Factors Analysis and Classification System (HFACS) was developed by American doctors Scott Shappell and Doug Wiegmann. On the basis of many cases of human error in the US Air Force, they revealed the various causes of human error.

The Cothink

Cothink is a problem solving tool to avoid linear causal thinking and simultaneously mobilize the left and right brain.

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