Originally Posted by
lomapaseo
Rarely does the designer specify where each row of seats are placed or baggage stowed. They tend to specify the pressure bulkheads fore and aft and then provide info for an operator to use the plane.
Yes, that's true.
But the designer will have determined the C of G envelope within which the airlines can configure the cabin and operate the aircraft. For a regulator to step in and retrospectively impose a more limited C of G range indicates that something hasn't gone according to plan.