whatdoesthisbuttondo
I am not design engineer, so l am trying to use common sense hear.
You have a weak spots on any aircraft or structure.
Every structure that is built has design loads to be met and this is the same as an aircraft, as it is a structure.
If you exceed these design loads, damage will occur and this is normally at the weakest point, which l am calling a weak spot.
So what l am saying is that any repair is designed to leave the structure after repair, equal to or stronger than before it was repaired.
This you pointed out correctly and l agree with.
They try to spread any loads or stress as part of the repair process.
Aircraft that have structural repairs will normally have extra inspections to be carried out of the life of the aircraft on the repair or repair area.
These inspections will differ by intervals and inspection method, for instance using a detailed inspection or an NDT inspection.
The area that has buckled on this B767 and other B767s is around the same area, which is obviously the weakest point.