However, when we were called upon to assist, we sent an aerospace engineer in to lead the analysis. He knew very little about boilers. That made him the perfect candidate for the lead role. When you are not expected to have all the answers, you can ask any question you want without ridicule. When you have an ideal team put together and a good data collection strategy, then you need a means to logically deduce what the data is telling you.
All failures are the result of a string of cause and effect relationships.
Of the numerous RCFA methods on the market, they must accept this fact. The only difference between the various methods is how they develop and graphical represent the logic sequence that lead to failure. They all represent a means by which to sort out the failure data and determine the sequence of errors that lead to failure. All of these methods represent how the mind utilizes deductive logic to draw conclusions. However, the conclusions must be based on fact and not assumptions.