A gas turbine trips on high vibration at two in the morning. By the time the borescope goes in, the operator already suspects what it will find: a cracked first-stage blade, maybe a piece missing entirely. The turbine gets pulled apart, the blade gets replaced, and the unit is back online inside the week. Then, fourteen months later, a blade in the same stage fails again. This is the point where a proper Root Cause Analysis should have started the first time. Gas turbine blad