I had heard of the history of the "rudder hardover" problems with the 737 but have never heard that Boeing was actively subverting the investigation. Assuming i

I had heard of the history of the "rudder hardover" problems with the 737 but have never heard that Boeing was actively subverting the investigation. Assuming it's true, I'd agree that it's appalling behavior, but this post alone doesn't convince me. A lot of complex systems can fail in unlikely ways and it doesn't imply malfeasance that the company was wrong about the cause. How many times have you investigated a weird, intermittent software or system problem and gone down the wrong path (or paths) because what turned out to be the actual cause seemed so unlikely, even if there were clues that in retrospect you should have given more weight.