Inlet made of honeycomb material delimited by an upper face (10), a lower face (11) and four lateral faces joining the upper face to the lower face, said interjoists having two lateral spoilers (14) on two opposite lateral faces (12, 13), these spoilers being intended to support interjoists on beams (3), characterized in that the interjoists has a longitudinal slot (4) in the general shape of T, a first portion (41) comprises at least one notch extending from the underside (11) of the interjoists towards the central part of the interjoists in the direction of its upper face (10) and a second portion (42) of which extends said first part, extends towards each of said opposite lateral faces (12, 13) and ends at a distance from said lateral faces.
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