Been there. Done that. I'm sure LR applied that process to their product spec. Well, derate again.Do you think engineers don't understand how to compute margins? Seriously? Have you ever done any analysis? Did you read the spec?
Engineering is not based on common sense. They use 'math' and 'science.'
Can you image being in a Design review:
Engineering Lead:" "Here's the structural and thermal analysis that we performed and the documented validation testing we did"
mpinco: yea, common sense says that's BS. Also you cant use a 4 cylinder. Did you know the tongue weight on some campers are higher than listed?
It's called derating to less than spec. Ask your legal dept.
Just derate and work below specs. Realize that your actual may be much more than the manufacturers 'spec'.