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DEUs.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
COMMUNICATIONS
INTERCOMMUNICATION SYSTEMS - CONTROLS
A330/A340 FLEET DSC-23-20-20 P 1/4
FCOM 19 AUG 10
AUDIO CONTROL PANEL
Applicable to: ALL
(1) Transmission keys
Pressed: The associated channel is selected for transmission.
The three green lines come on.
The pilot deselects the channel by pressing the pushbutton again, or by selecting
another channel.
CALL lt : The legend flashes amber (and buzzer sounds) when the SELCAL system detects
a call.
MECH lt: The legend flashes amber (and buzzer sounds) for a call from the nose gear bay.
The MECH light goes off after 60 s, if it is not reset.
ATT lt : The legend flashes amber for a call from a cabin attendant. The ATT light goes off
after 60 s, if it is not reset.
SAT
CALL lt
: The legend flashes amber, when the SATCOM system detects a call.
The three green lines flash during the establishment of air to ground calls, or when
SATCOM calls are on hold.
After call establishment, the three green lines remain steady.
(2) Reception knobs
Pressing and releasing the knob (knob out) selects the ‐ associated audio reception channel.
The integral white light comes on. Rotating the knob adjusts the volume. The ANN LT knob
controls the brightness.
‐ Pressing the knob (knob stays in) disconnects the associated audio reception channel.
Note: For reception of DME audio navigation signals associated to an ILS or MLS station,
the LS pushbutton on the FCU must also be selected.
(3) RESET key
Pressing this key extinguishes CALL, MECH and ATT lights and cancells the buzzers.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
COMMUNICATIONS
INTERCOMMUNICATION SYSTEMS - CONTROLS
A330/A340 FLEET DSC-23-20-20 P 2/4
FCOM 19 AUG 10
(4) VOICE key
This key allows the flight crew to inhibit the audio navigation signals (VOR, ADF).
Pressing this key filters out ident signals and turns on the green ON light.
(5) INT / RAD sw
This switch operates as a push-to-talk switch for boom mike or oxygen mask mike.
INT : Boom and mask mikes transmit on interphone regardless of which
transmission key is selected. For reception on interphone, the crew
member must have the INT selected (INT reception knob out).
Neutral : Reception is normal. Boom and mask mikes do not transmit.
RAD (press and
hold)
: Boom and mask mikes transmit on the radio selected on the audio
control panel.
(6) Passenger address (PA) function
PA transmission key and reception knob.
(Refer to DSC-23-20-50-A PASSENGER ADDRESS - GENERAL)
SIDE STICK RADIO SELECTOR
Applicable to: ALL
This selector has the same function as the INT/RAD switch on the ACP.
NEUTRAL
(spring-loaded)
: Boom and mask mikes are dead. Reception is normal.
RADIO (aft position) : Boom and mask mikes transmit the equipment selected by the
transmission key on the ACP.
Note: If RADIO is selected on the side stick when the INT/RAD switch is on INT, the radio
function has priority over the interphone function.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
COMMUNICATIONS
INTERCOMMUNICATION SYSTEMS - CONTROLS
A330/A340 FLEET DSC-23-20-20 P 3/4
FCOM 19 AUG 10
LOUDSPEAKER VOLUME KNOB
Applicable to: ALL
This knob adjusts the volume of the loudspeaker for radio communication.
OFF : Loudspeaker does not respond the signals from the aircraft's radio equipment.
Clockwise
rotation
: Loudspeaker broadcasts signal from the aircraft's radio equipment at
increasing volume.
Note: This knob does not control the loudness of aural alert and voice message.
AUDIO SWITCHING
Applicable to: ALL
The crew can switch to the third audio channel if ACP1 or ACP2 fails.
When the crew does this, it takes away the third occupant's access to the acoustic equipment.
NORM : Each crew member uses his dedicated communication equipment.
CAPT ON 3: The pilot uses his acoustic equipment and the third occupant's ACP.
F/O ON 3 : The copilot uses his acoustic equipment and the third occupant's ACP.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
COMMUNICATIONS
INTERCOMMUNICATION SYSTEMS - CONTROLS
Intentionally left blank
A330/A340 FLEET DSC-23-20-20 P 4/4
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
COMMUNICATIONS
INTERCOMMUNICATION SYSTEMS - INTERPHONE SYSTEMS
A330/A340 FLEET DSC-23-20-30 P 1/6
FCOM 19 AUG 10
FLIGHT INTERPHONE SYSTEM
Applicable to: ALL
This system allows the flight crew to communicate among themselves and, through a jack on the
　
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