| CPC H05K 7/20563 (2013.01) [H05K 7/20718 (2013.01)] | 11 Claims |

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1. An avionics rack module comprising:
two shelves and a column, the column linking the two shelves, and
a first airstream and a second airstream each circulating in the column and in the two shelves to cool at least one avionics element,
wherein each of the two shelves comprises (i) a plate extending on a transverse plane and configured to support an avionics element and (ii) a half-shell extending on a longitudinal plane secant to the transverse plane and configured to be joined to another half-shell of the other shelf of said module to form the column.
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