A radio communication system for ACARS messages exchange between an aircraft (2) and a ground center (20) includes in the aircraft a communication management unit (4) having a plurality of interfaces for connecting communication equipments among VHF, HF and SATCOM communication equipments (6, 10, 14), the communication equipments being adapted via respective bi-directional channels to each communicate independently with the ground center (20). The radio communication system further includes a communication unit (24) including emulating elements (44) for emulating a communication equipment when communicating with the communication management unit (4) and wireless access elements (50) for communication with a wireless access point (28) of a ground communication network (30).