All aircraft may land at max take off weight, there are different limitations applied. On the 340-500 we have an overweight landing checklist. It is not a dangerous exercise but certain criteria must be met, the FCOM has different max rate of descent on touch down for max landing weight and max takeoff weight. Certain conditions may preclude you from dumping fuel to max landing weight and we brief and those before takeoff. One is an uncontained fire and another is a person who needs medical attention urgently. To put the weights in perspective on very heavy flights on very long routes my airline does some ULR flights that after almost 14 hours when we reach our destination we are at max landing weight.