On a related subject prompted by the part lifetime docs posted by aerolearner in the initial reply: they contain cycle lifetimes for various elements within the turbine - spool, disk etc - but not the blades themselves. Therefore is it correct to understand these are not life-limited parts as such? I found this a bit surprising given they’ll be exposed to the same high centrifugal forces and heat or is this mitigated by the fact they’re inspected and x-rayed whereas the larger components listed in the doc can’t be?