I do love when people imply a &quot;lab&quot; is this mythical thing that can, through no effort, reproduce any likely or unlikely condition that one could ever expect to encounter.<p>They should just print out a sign that says &quot;lab&quot; put it on an empty room, place the starter motor in the middle of it, and then suddenly they would know why it was broken. It is in a lab after all! This isn&#x27;t rocket science! Or if one in an empty room fails put 100-1000 into the empty room, it has GOT to work!!! It is too easy to fail! Being in a lab is all that it takes!<p>I&#x27;d suggest you watch this[0], this issue was literally costing human lives, they knew there was a rudder issue, they placed it in a lab, testing it for thousands of hours and ultimately found it by a little luck. It moved our understanding of failure states forward.<p>There&#x27;s no reason to assume that finding the issue with the starter motor is easy or trivial. No amount of lab hand waving changes that, it will take just brute effort.<p>[0] <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=36mg8BNwBT4" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=36mg8BNwBT4</a>