Let's not even suggest whether there could be a possible connection between the Air Transat incident and the AA crash. This type of thinking is clearly 'out of bounds' on Pprune.
Even to bring up the question is too much for some who debate technical topics on Pprune. Check previous pages.
If Boeing uses materials which can not be inspected and evaluated in the 7E7 etc, then they have somehow screwed up. Aside from that, does the 7E7 have a yoke or a stick?