An embodiment of the invention, relates to a multifunctional cargo hold 
system for an aircraft with a cargo hold floor; a 
retainer rail fitted to the cargo hold floor, suitable for the 
assembly of means for rolling and / or fixing of loaded elements, wherein the means has a variable 
assembly with regard to the longitudinal direction of the 
retainer rail, wherein the cargo hold 
system has a number of cargo positions, suitable for accommodating elements of the group, including a net for partitioning the cargo hold, a standard container, a palette, a telescopic 
system, an underfloor catering container, an underfloor rest space, a conveyor of 
fixed length and a conveyor of 
variable length, wherein each load position can accommodate at least four of the elements.