A modular subfloor system 3 comprises first longitudinal structural frames 6, lateral regions 14, and a modular tank system 5 that is connected to the first longitudinal structural frames 6. The modular tank system 5 comprises a bottom shell 8, an upper panel 9, second longitudinal -structural frames 7 arranged between the bottom shell 8 and the upper panel 9 and transversal structural frames 10 that are arranged between the bottom shell 8 and the upper panel 9. The transversal structural frames 10 and the second longitudinal structural frames 7 form compartments 11. The modular tank system 5 further comprises tank bladders 12 arranged in at least some of the compartments 11 and sealing elements that seal the upper panel 9, the bottom shell 8, and the at least some of the compartments 11 of the modular tank system 5.
A MODULAR SUBFLOOR ARRANGEMENT FOR AN AIRCRAFT
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