A post mentioned broken blades so as an example of one test - the M+D jet is planned to have a 500 start and run cycles TBO but, as it was explained to those of us waiting, they had to demonstrate 3 times that number of starts and power runs with cracked blades with no failure - which tests alone took several months to run.

That is why I mentioned later, I expect the QA of these turbines to be much better than that of the typical model turbine. Good for them. I do hope they model FOD accurately though. Nice clean lab is one thing...