Repairs
I've seen a fork truck make a six inch dent (with a two inch hole) in the (pressurised) hold skin of a 747. Pax were just starting to load. It was repaired with about a kilo of epoxy applied on the inside and, after a short delay, set off on a 5000 mile leg to LHR. Returned with the 'patch' still in place and departed to the Carriers main Base for proper repair. Don't think it would happen today, but no Frames were involved.