Patent ID: 8256713

Claim:
Aircraft fuselage section comprising: a number of longitudinal strengthening beams attached to a fuselage section lower panel and a number of longitudinal rails designed to support floor boards, in which at least one crosspiece is laid transversally between at least two strengthening beams of said number of longitudinal beams and supports at least one longitudinal rail of said number of longitudinal rails, said at least one crosspiece being mounted swiveling on the fuselage section lower panel in order to permit the rotation of the at least one crosspiece around a longitudinal axis; wherein the at least one crosspiece comprises a double pivot articulation comprised of a first pivot and a second pivot, the first pivot being attached to a crosspiece main body of said at least one crosspiece and the second pivot being attached to the fuselage section lower panel; in which a first end of the crosspiece main body is fitted with the double pivot articulation and a second end of said main body is fitted with a pivot linkage.