Abstract: A communication system installed in an aircraft, the system comprising a transmitter configured to transmit audio data signals to a ground recording station provided with memories for the recording of the data, at least one audio assembly per pilot of the aircraft for transmitting and receiving audio data signals, a CVR recorder and an audio management unit connected to each audio assembly, to the CVR recorder and to the transmitter, the unit being configured to transfer the audio signals received or transmitted by an audio assembly to the transmitter and to the CVR recorder. Each audio assembly comprises an in-use detection system connected to the transmitter and configured to transmit to the transmitter a signal representative of the in-use state of the audio assembly. The transmitter transmits the audio data signals received from the management unit to the ground recording station on reception of the signal.

Abstract: A communication system installed in an aircraft, the system comprising a transmitter configured to transmit audio data signals to a ground recording station provided with memories for the recording of the data, at least one audio assembly per pilot of the aircraft for transmitting and receiving audio data signals, a CVR recorder and an audio management unit connected to each audio assembly, to the CVR recorder and to the transmitter, the unit being configured to transfer the audio signals received or transmitted by an audio assembly to the transmitter and to the CVR recorder. Each audio assembly comprises an in-use detection system connected to the transmitter and configured to transmit to the transmitter a signal representative of the in-use state of the audio assembly. The transmitter transmits the audio data signals received from the management unit to the ground recording station on reception of the signal.

Abstract: An aircraft flight deck audio system, including a central management unit and pilot, co-pilot and third-man terminals. Estimation units estimate the quality of uplink and/or downlink digital signals of the pilot and co-pilot terminals. A control unit is configured such that, when the quality of the digital signals on the uplink and/or the downlink of the pilot or co-pilot terminal is estimated as unsatisfactory, the digital signals intended for the pilot or co-pilot terminal are routed toward the third-man terminal downlink and the digital signals originating from the third-man terminal and present on the uplink are routed toward the output of the pilot or co-pilot terminal. Transceiver units of the pilot, co-pilot and third-man terminals, respectively, transmit the digital signals of the pilot or co-pilot terminal on the third-man terminal downlink and the digital signals on the uplink of the third-man terminal toward the pilot or co-pilot terminal.

Abstract: An aircraft flight deck audio system, including a central management unit and pilot, co-pilot and third-man terminals. Estimation units estimate the quality of uplink and/or downlink digital signals of the pilot and co-pilot terminals. A control unit is configured such that, when the quality of the digital signals on the uplink and/or the downlink of the pilot or co-pilot terminal is estimated as unsatisfactory, the digital signals intended for the pilot or co-pilot terminal are routed toward the third-man terminal downlink and the digital signals originating from the third-man terminal and present on the uplink are routed toward the output of the pilot or co-pilot terminal. Transceiver units of the pilot, co-pilot and third-man terminals, respectively, transmit the digital signals of the pilot or co-pilot terminal on the third-man terminal downlink and the digital signals on the uplink of the third-man terminal toward the pilot or co-pilot terminal.

Abstract: A method for the determining, on board an aircraft, of an identifier of a communications center with which an aircraft crew wishes to enter into contact, includes the following operations: a) the writing, by the crew, of a radio-communications frequency to a display unit of the cockpit of the aircraft, b) the determining of surroundings of the aircraft, c) the determining of the communications centers situated in these surroundings, d) the comparing of the frequencies of these communications centers with the frequency displayed on the display unit of the cockpit, and f) when the frequency of a communications center is identical to the displayed frequency, the display on the aircraft display unit of the identifier of said communications center having a frequency identical to the displayed frequency.

Abstract: A method for the determining, on board an aircraft, of an identifier of a communications centre with which an aircraft crew wishes to enter into contact, includes the following operations: a) the writing, by the crew, of a radio-communications frequency to a display unit of the cockpit of the aircraft, b) the determining of surroundings of the aircraft, c) the determining of the communications centers situated in these surroundings, d) the comparing of the frequencies of these communications centers with the frequency displayed on the display unit of the cockpit, and f) when the frequency of a communications centre is identical to the displayed frequency, the display on the aircraft display unit of the identifier of said communications centre having a frequency identical to the displayed frequency.