Can a wing break off in turbulence?
No. The wingtips of a Boeing 747, for example, can be bent around eight metres above and four metres below their normal position before there is even the faintest theoretical danger of rupture. Even the worst turbulence encountered could not cause that kind of deformation. The engine vibrations seen during turbulence are also well within design tolerances: Stress and strain ratings in aircraft constructions are based on extensive air turbulence studies at all atmospheric levels. Furthermore, regular inspections are made to check that even in the unlikely event of a critical load, neither the airframe nor the wings have sustained any damage.
