Multifunctional cargo hold system

A multifunctional cargo bay system for an aircraft, comprising:

• a cargo bay floor;
• a retaining rail mounted on the cargo bay floor, wherein the retaining rail is suitable for installing a means for rolling or fixing elements to be loaded;
• wherein the means for rolling or fixing elements is adapted to be variably mounted with respect to longitudinal direction of the retaining rail;
• wherein the cargo bay system has a plurality of loading positions that are adapted to accommodate elements selected from the group consisting of a net for dividing the cargo bay, a standard air cargo container, a pallet, a telescope system, a lower deck catering container, a lower deck break area, a fixed-length conveyor belt, a variable-length conveyor belt and a combination thereof;
• wherein each loading position is adapted to accommodate at least four different elements.