SomebodyInTLS wrote:SheikhDjibouti wrote:However, in this case I also see the possibility that "grandfathering" will be put under the microscope, and if that happens things will get really interesting.
Probably not all that interesting... It's not like they'll retrospectively un-certify a bunch of aircraft, but they might tighten up the rules and make it harder to grandfather things without recertification where changes have been made.
I'm sure you're right except I thought grandfathering was already invalidated where "changes have been made"
Is that not precisely why Boeing instigated MCAS, to make the MAX appear to handle just like an NG (i.e. disguising any change)?
Is that not why MCAS was initially proposed with a 0.6deg nose down trim, because the change in aerodynamic performance was only minimal - except that isn't actually true.?
Is that not why minimal extra training was mandated, to persuade the world that the MAX was barely any different from what came before it?
Is that not why a third AoA sensor and additional software to manage the situation was only offered as an option, because fitting it as standard would be equivalent to admitting there were significant changes?
Is that not why Boeing obscured so many details because drawing attention to them could have prejudiced automatic grandfathering?
Each item in itself is possibly trivial, but taken as a package it obviously scared Boeing enough to want to hide it.
I don't have the relevant experience in this field to make a definitive judgement, but I've seen plenty of others on these forums who think they know the answer.
Ultimately lawyers will decide whether these changes constitute enough to invalidate grandfathering for the MAX.
And that is why it will never go to court.
In the absence of proper legal consideration. I predict grandfathering will be relaxed just enough to permit the MAX to fly again (because the world needs it....), and then it will tightened up for all future designs because it is "the right thing to do". The cognitive dissonance caused by such regulatory gymnastics will become an object lesson for future generations to laugh at. Meanwhile those of us alive today will have to hang our heads in shame.