Abstract: A method for arranging a set of antennas capable of transmitting or receiving in a radio frequency range in an existing aerodyne implemented either during an initial installation operation, or in a subsequent maintenance or update operation is disclosed. The method includes removing at least one component of a structural element external to the bearing surface of the existing aerodyne, the component being substantially transparent to the radio frequency range; installing the set of antennas in a zone exposed by the removal in the step; fitting an electronic and electrical harness connecting the set of antennas to a radio communications system and to a power supply inside the fuselage; re-forming the external structural element in such a way as to cover the installed set of antennas.