An aircraft structure includes a skin (28) that is reinforced in two directions: by a first family of stiffeners called stringers (30) that are arranged in the longitudinal direction of the aircraft, and by a second family of stiffeners called frames (32) that are arranged in planes that are perpendicular to the longitudinal direction and that ensure the taking up of orbital forces, characterized in that at least one frame (32) has a hollow cross-section that is delimited by a closed profile, produced for a given cross-section in a single piece, of which one portion is in contact with the skin.
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