Originally Posted by
JimInOhio
It’s been claimed here the door plugs on the MAX 9 are identical to those on the 739. If that is true, what makes the 739 immune to what’s been found on the MAX 9 and how can that be proved?
Well if the loose bolts issue is only being found on 7M9's that haven't yet undergone a heavy maintenance check (plug not inspected by UA since initial delivery) then it would heavily suggest an installation issue as opposed to a design issue. And therefore since all the 739's have undergone heavy maintenance, multiple times, they shouldn't have any loose bolt issues.