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A330/A340 FLEET DSC-46-30 P 4/4
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INFORMATION SYSTEM
CNS/ATM
A330/A340 FLEET DSC-46-40 P 1/10
FCOM 19 AUG 10
INTRODUCTION
Applicable to:
The global Communications Navigation Surveillance/Air Traffic Management (CNS/ATM) system is
made up of the C (Communications), N (Navigation) and S (Surveillance) tools, developed to provide
efficient Air Traffic Management methods.
Such methods include the introduction of datalink communication between pilots and controllers. This
is considered to be the primary means of communication over oceans and in remote areas.
The current CNS/ATM system uses ACARS networks : These networks are mainly ARINC, and
SITA. The related data communications are managed by the Air Traffic System Unit (ATSU), and can
be supported by the SATCOM or the VHF.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INFORMATION SYSTEM
CNS/ATM
A330/A340 FLEET DSC-46-40 P 2/10
FCOM 19 AUG 10
The CNS/ATM system includes the following functions :
‐ The ATS Facilities Notification (AFN)
‐ The Controller Pilot Data Link Communications (CPDLC)
‐ The Automatic Dependent Surveillance (ADS).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INFORMATION SYSTEM
CNS/ATM
A330/A340 FLEET DSC-46-40 P 3/10
FCOM 19 AUG 10
INTRODUCTION
Applicable to: ,
The global Communications Navigation Surveillance/Air Traffic Management (CNS/ATM) system is
made up of the C (Communications), N (Navigation) and S (Surveillance) tools, developed to provide
efficient Air Traffic Management methods.
Such methods include the introduction of datalink communication between pilots and controllers. This
is considered to be the primary means of communication over oceans and in remote areas.
The current CNS/ATM system uses ACARS networks : These networks are mainly ARINC, and
SITA. The related data communications are managed by the Air Traffic System Unit (ATSU), and can
be supported by the SATCOM, the VHF or the HF.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INFORMATION SYSTEM
CNS/ATM
A330/A340 FLEET DSC-46-40 P 4/10
FCOM 19 AUG 10
The CNS/ATM system includes the following functions :
‐ The ATS Facilities Notification (AFN)
‐ The Controller Pilot Data Link Communications (CPDLC)
‐ The Automatic Dependent Surveillance (ADS).
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INFORMATION SYSTEM
CNS/ATM
A330/A340 FLEET DSC-46-40 P 5/10
FCOM 19 AUG 10
ATS FACILITIES NOTIFICATION (AFN)
Applicable to: ,
ATS Facilities Notification (AFN) is necessary in order to inform the ATC that the aircraft is capable of
datalink communications, and to exchange address information. It is initiated by the pilot Refer to 99
Duref Cible FCOM (See the NOTIFICATION Procedure in 3.04.46 - PRO SUP 46.20).
CONTROLLER PILOT DATA LINK COMMUNICATIONS (CPLDC)
Applicable to:
CPLDC involves the exchange of preformatted or free text messages.
All ATC messages, either coming from the ATC center (uplink) or to be sent to the ATC center
(downlink), transit through the DCDU.
UPLINK MESSAGES (FROM THE ATC TO THE CREW)
The following message categories can be uplinked :
1. Clearances (immediate or deferred, speed, heading, altitude, offset, direct to, route clearance or
constraint etc...)
2. Report requests (confirm, position reports...)
3. Negotiation requests (ex : Can you accept ... ?)
4. Information messages.
Upon message reception, the ATSU triggers the ATC chime and the flashing blue “ATC MSG”
pushbutton light on the glare shield.
For normal messages, the aural signal is repeated every 15 s (with the first signal delayed by
15 s). For urgent messages, the aural signal is triggered without any delay and is repeated every
5 s.
If the screen is empty, the message appears on the DCDU. If not, a flashing “MSG 1/2” cue is
displayed.
The pilot can display the message by using the MSG + pushbutton.
Note: Urgent messages are displayed, regardless of the state of the screen.
Push one of the two “ATC MSG” pushbuttons to stop the alert. The alert can also be stopped,
when the pilot performs any action regarding the latter uplink message displayed on the DCDU.
To answer the message :
‐ Manually prepare the message by selecting the appropriate function key (WILCO, ROGER,
AFFIRM, NEGATIVE...), or automatically prepare the message via the FMGS.
‐ Send the message to the ground by using the SEND key.
Once the message is sent, the screen should be cleared by pressing the CLOSE key.
　
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