If the empty weight center of gravity (CG) of an airplane is within limits, what can we conclude?

When the empty weight center of gravity (CG) of an airplane is confirmed to be within limits, it indicates that the aircraft has been constructed or modified correctly with respect to its weight distribution. This adherence to CG limits ensures that the aircraft will perform optimally within its designed parameters, positively affecting stability and control during flight.

The conclusion that it is not necessary to calculate CG extremes stems from the understanding that if the empty weight CG is already within acceptable parameters, there is less urgency to identify every possible extreme case. However, it is still important to consider various loading configurations during operations, especially once fuel and payload are added. This moving forward implies a standard of safety in weight and balance practices without needing extensive recalculations if the base is confirmed to be correct.

In contrast, other choices point towards additional considerations or actions that are not immediately necessary given that the empty weight CG meets established guidelines. Calculating CG extremes, setting minimum fuel limits for checks, and implying that weight and balance are insignificant are approaches that would be more applicable if the initial CG were out of limits or if there were other complicating factors to monitor.