Now , if a simple Engineer can give his point of view to some of the best Pilots in the world : structure is a question of technology and not manufacturer ...
I have started my career on the old 747 and maybe some of you heard about section 41 as an example (nose gear wheel well)...
Cracks are everywhere ... and in both families.
There are tolerances about them , given by manufacturers in a book called SRM ... Structure Repair Manual (for the ones who does not know it).
Be sure that if an Engineer is signing a release with a known crack , he would have checked the book first or got the agreement from the manufacturer , what i mean is , that none of my brother will take any kind of risk with that ...