Get from symptom to root cause without blaming the crew
Use Five Whys to turn repeat maintenance work into a system-level planning improvement.
Repeat failure Conveyor C-17 has the same chain-tension work order for the third time in six weeks. If the planner only schedules another adjustment, the backlog records motion instead of learning. Five Whys Ask until the plan can change Five Whys works when each why follows evidence and ends in a controllable system improvement. Blame Who failed to tighten it? The plan changes, so the defect is less likely to return. If the final why cannot change a process, part, standard, or design, the analysis is not done. 01 First why 02 Evidence 03 Try it Avoid blame The closeout…
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