A380-LEVEL I - ATA 23 Communications

A380TECHNICAL TRAINING MANUAL

MAINTENANCE COURSE - T1 & T2 (RR / Metric)LEVEL I - ATA 23 Communications

This document must be used for training purposes only

Under no circumstances should this document be used as a reference

It will not be updated.

All rights reservedNo part of this manual may be reproduced in any form,

by photostat, microfilm, retrieval system, or any other means,without the prior written permission of AIRBUS S.A.S.

LEVEL I - ATA 23 COMMUNICATIONSCommunications System Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2Voice & Data Communication Systems Presentation . . . . . . . . . . . . . 4Radio & Audio Integrating Management System Presentation . . . . . 22Cockpit Voice Recording System Presentation . . . . . . . . . . . . . . . . . 30External & Taxiing Aid Camera System Presentation . . . . . . . . . . . . 34Communications System Maintenance (1) . . . . . . . . . . . . . . . . . . . . 44


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COMMUNICATIONS SYSTEM INTRODUCTIONGeneral

The Communications system has two main parts:- communication means,- and audio and video monitoring systems.


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GENERAL


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VOICE & DATA COMMUNICATION SYSTEMS PRESENTATIONGeneral

Communication to and from the aircraft may be in voice or data mode,depending on the communication system used.The cockpit crew can communicate by using HF and VHF radiocommunication systems as well as satellite communication system.Air-ground communications are available in voice and data mode. Air-aircommunications are available in voice mode only.When the aircraft is at the gate, airlines can use the Wireless AirportCommunication System (WACS) to transfer some specific data (optionalequipment).Inside the aircraft, on-board communication system let flight crew, groundcrew and passengers communicate to each other.A static discharging system protects the communications system frominterference caused by static electricity.


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GENERAL




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VOICE & DATA COMMUNICATION SYSTEMS PRESENTATIONVoice communication layout

Audio signals from the users are routed to the different systems capableof voice communications. To communicate outside the aircraft, theoperators can use radio communications such as HF and VHF systemsor the satellite communication (SATCOM) system.The Flight, Service and Cabin interphone systems are used for theon-board communications.The Radio and Audio Integrated Management System (RAIMS) controlsvoice communication in the cockpit environment.The Cabin Intercommunication Data System (CIDS) is dedicated to thecabin crew with its Cabin interphone system.The RAIMS is interfaced with the CIDS to allow interphonecommunication between cockpit, cabin and ground environments.




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VOICE COMMUNICATION LAYOUT




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VOICE & DATA COMMUNICATION SYSTEMS PRESENTATIONData communication layout

Data is transmitted between the aircraft and ground stations includingAir Traffic Control (ATC) and Airline Operational Control (AOC). Thistransmitted data is used for various purposes, which include regulatoryand maintenance requirements.The Avionics Communication Router (ACR) system is the main routerfor data communications. This system routes the messages to the bestcommunication system that suits the quality of service requirementsdefined by the user applications. The communication systems linked tothe ACR are HF, VHF and SATCOM systems.In the Open World, specific data is routed by the Cabin Router Units(CRUs), which are part of the Network Server System (NSS). Theserouters are linked especially to the optional Wireless AirportCommunication System (WACS). SATCOM system can also be used ifthe High Speed Data Unit (HSDU) is installed.




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DATA COMMUNICATION LAYOUT




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VOICE & DATA COMMUNICATION SYSTEMS PRESENTATIONCommunication systems

Here is an overview of all the communication systems installed on theaircraft. All those systems have a main component (transceiver) shownon this picture.




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COMMUNICATION SYSTEMS




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VOICE & DATA COMMUNICATION SYSTEMS PRESENTATIONCommunication systems (continued)

Radio communicationsRadio communication systems are HF and VHF systems.HFThe HF system is composed of 2 HF Data Radio (HFDR) transceivers,2 HFDR couplers and a single antenna. Both subsystems are capableof VOICE and DATA communication. Links between transceiversand between couplers avoid any simultaneous transmission fromHFDR 1 and HFDR 2 transceivers.VHFThe VHF system is composed of 3 VHF Data Radio (VDR)transceivers and their 3 dedicated antennas. All three transceivers arefully interchangeable and capable of VOICE and DATAcommunication but only VDR 3 transceiver is connected to the datasources.




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COMMUNICATION SYSTEMS - RADIO COMMUNICATIONS




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Satellite communicationsThe aircraft is equipped with a SATellite COMmunication (SATCOM)system. It provides the capability for all aeronautical satellitecommunication requirements external to the aircraft, including dataand telephone services.The SATCOM system is composed of two subsystems:- The avionics subsystem, which converts voice/data signals intoL-band radio frequencies (and vice-versa),- The antenna subsystem, which sends and receives L-band radiofrequencies.The Satellite Data Unit (SDU) supplies all primary services necessaryto provide air/ground communications through satellites (connectionprotocols and signal conversion).The Diplexer/Low Noise Amplifier (D/LNA) segregates transmittedand received signals and amplifies the received signal.The Beam Steering Unit (BSU) controls the pointing of the airborneantenna.The optional High Speed Data Unit (HSDU) can be installed to allowdata intercommunication to and from the Open World.




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COMMUNICATION SYSTEMS - SATELLITE COMMUNICATIONS




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On-board communicationsThe flight interphone system is hosted in the AMUs. It allowsintercommunication between the cockpit crew stations and also theground crew at the nose landing gear.The service and cabin interphone systems have a link with the AMUsto allow cockpit, service, and cabin crew intercommunication.




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COMMUNICATION SYSTEMS - ON-BOARD COMMUNICATIONS




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Wireless communicationsThe Wireless Airport Communication System (WACS) is an optionalsystem. If installed, it will transmit data for airline use when theaircraft is at the airport gate. It is composed of a transceiver namedTerminal Wireless LAN Unit (TWLU) and its dedicated antenna.




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COMMUNICATION SYSTEMS - WIRELESS COMMUNICATIONS




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VOICE & DATA COMMUNICATION SYSTEMS PRESENTATIONStatic discharging system

During flight, the aircraft becomes charged with static electricity. Randomdischarges of this electricity would cause interference in thecommunication and navigation systems. The purpose of the staticdischargers is to decrease the effect of interferences in the communicationand navigation systems.Two types of static discharger are installed:- One with a straight mounting, at the trailing edges.- One installed with a 30-degree angle, at the tips.




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STATIC DISCHARGING SYSTEM




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RADIO & AUDIO INTEGRATING MANAGEMENT SYSTEM PRESENTATIONSystem architecture

The Radio and Audio Integrating Management System (RAIMS) lets thecockpit crew control:- Audio communications to and from the cockpit.- Communication means such as radio frequency selection and data modeselection.The RAIMS also manages the call indications on the Radio and audioManagement Panels (RMPs).The main components of the RAIMS are:- 2 Audio Management Units (AMUs) for audio signals management.- 3 RMPs, which act as the Human Machine Interface (HMI) for radioand audio management.The three RMPs are identical and interchangeable. There are bi-directionaldialog busses between the 3 RMPs: this makes possible the updating ofRMPs information.


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SYSTEM ARCHITECTURE



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RADIO & AUDIO INTEGRATING MANAGEMENT SYSTEM PRESENTATIONAudio management

The 2 AMUs are the main parts of the audio management in theCommunications System. They manage all audio signals to and from thecockpit, especially between the cockpit and the communication means.Cockpit crew uses the RMPs to select the communication means withthe transmission and reception keys dedicated to each communicationsystem.In the cockpit, a potentiometer on each side is used for the adjustment ofpilot and 1st officer loudspeakers (two each).Radio Navigation and Flight Warning Systems are linked to the AMUsto broadcast indicating and warning messages through the loudspeakers.These messages include a/c altitude, ground station identification, auralwarnings ...



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AUDIO MANAGEMENT



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RADIO & AUDIO INTEGRATING MANAGEMENT SYSTEM PRESENTATIONRadio management

The RMPs are used in the radio management functions.They display the radio frequency for tuning of the HF and VHF systems.As a back-up, RMPs are also able to tune the radio navigation systemsif manual selection becomes necessary.The crew can use the SATCOM telephone facilities by dialing assignedtelephone numbers on the RMPs.The DATA mode control is done through the RMPs (VHF, HF andSATCOM).



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RADIO MANAGEMENT



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RADIO & AUDIO INTEGRATING MANAGEMENT SYSTEM PRESENTATIONCalls management

The RAIMS manages visual and aural indication of calls.

Aircraft callSELCAL calls are detected by the AMUs on reception of coded VHFor HF signals. Coded signals are compared to a SELCAL code specificto the aircraft. This code is selected through the Onboard MaintenanceSystem.When the ground personnel initiates a call to the cockpit crew of aparticular aircraft using satellite communication, the SATCOM systemsends the information to both AMUs and RMPs.When a call is detected on radio or satellite communication means,the amber "CALL" light flashes on the transmission key correspondingto the communication means it comes from. An aural warning is alsoheard on loudspeakers and boomsets.

Cabin crew callCabin crew can also call the cockpit crew. This function comes fromthe Cabin Intercommunication Data System (CIDS). When the callis initiated, the amber "ATT" light flashes on the CAB transmissionkey. An aural warning is also heard on loudspeakers and boomsets.

Ground crew callThe Cockpit-to-Ground Crew Call System is part of the RAIMS.Cockpit crew can initiate a call to the ground mechanics by pressingthe MECH P/BSW on the CALLS panel. This action activates thehorn at the NLG area and a blue light on the service panel.The ground mechanics can also call the cockpit using the COCKPITCALL P/BSW on the service panel. The amber "MECH" light on theINT transmission key will flash and an aural warning will sound onloudspeakers and boomsets.



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CALLS MANAGEMENT - AIRCRAFT CALL ... GROUND CREW CALL



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COCKPIT VOICE RECORDING SYSTEM PRESENTATIONGeneral

The Cockpit Voice Recording System records in the Cockpit VoiceRecorder (CVR), the conversations and audio communications of thecrew, and the data link communications from the Air Traffic Control(ATC). This recorded information is used to help in investigations afteran A/C accident or incident.


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COCKPIT VOICE RECORDING SYSTEM PRESENTATIONPrinciple

The Cockpit Voice Recording System is mainly composed of:- a CVR, which memory can store two hours of audio recording andrecord the data link messages during this recording period.- a CVR control unit, which is used for the manual control and monitoringof the CVR.- a cockpit area microphone, which picks up and transmits to the CVRdirect conversations between crew members, aural warnings in the cockpitand all other ambient noises from the cockpit.

RecordingThe CVR records:- 3 audio channels from the Audio Management Unit (AMU) 1integrated in the Radio Audio Interface Management System (RAIMS)(one for each cockpit station).- 1 audio channel from the cockpit area microphone, which is amplifiedby the CVR control unit.- All necessary data link communication messages directly from theATC applications.

Power supplyThe CVR is permanently supplied with 115VAC.It initiates the recording upon reception of ground discrete via thelogic relay wiring.It mainly depends on A/C flight/ground condition and whether theengine is running or not.On ground, pressing the ReCorDeR GrouND ConTroL P/BSW canmanually set the CVR in recording configuration. This manual modeallows pre-flight checklist recording and maintenance/test operations.

CVR Control UnitThe CVR control unit is installed on the overhead panel. It is used forthe testing of the CVR and the listening of recorded audio signals.

The recorder memory can store two hours of audio recording. Whenthe memory is full, an overwriting function starts.On ground only, under specific conditions, erasure of the CVRmemories is possible.




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PRINCIPLE - RECORDING ... CVR CONTROL UNIT




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EXTERNAL & TAXIING AID CAMERA SYSTEM PRESENTATIONGeneral

The External and Taxiing Aid Camera System (ETACS) lets the crewvisually monitor the A/C by using cameras.During taxiing, the crew visually monitors the position of the L/G wheelson the taxiway.If the optional nose camera is installed, the crew can visually monitorbefore push back, the engine intakes area as well as loading and serviceareas to confirm clearance.


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EXTERNAL & TAXIING AID CAMERA SYSTEM PRESENTATIONSystem

The Camera Interface Unit (CIU) is used to manage the cameras. Itreceives the video images from each camera, puts them in the mosaicformat and adds inserts on these mosaic images. Then, the CIU sends theimages to the Display Units (DUs) (PFDs and SD) selected by the pilotson the EFIS and ECAM control panels. These images are sent throughthe Concentrator and Multiplexer for Video (CMV).




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EXTERNAL & TAXIING AID CAMERA SYSTEM PRESENTATIONDisplay

The video images can be shown on the different DUs (after videoselection):- on the PFDs,- on the SD.




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EXTERNAL & TAXIING AID CAMERA SYSTEM PRESENTATIONDisplay (continued)

Taxi mosaic displayThe taxiing aid images from the belly and vertical stabilizer camerascan be shown on the PFDs and SD in the mosaic format:- on the upper 1/3 display area of the selected DU, square inserts helpthe pilot to see if the A/C NLG stays on the line of circulation,- on the lower 2/3 display area of the selected DU, the image showsa general outside FWD view of the A/C, particularly the distance ofthe Wing Landing Gear (WLG) from the edge of the taxiway.




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DISPLAY - TAXI MOSAIC DISPLAY




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EXTERNAL & TAXIING AID CAMERA SYSTEM PRESENTATIONDisplay (continued)

External monitoring display (optional)On the SD, crew can choose between taxi mosaic (identical to thePFD) and external monitoring function, which displays the Nose TACimage.




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DISPLAY - EXTERNAL MONITORING DISPLAY (OPTIONAL)




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COMMUNICATIONS SYSTEM MAINTENANCE (1)Communications safety items

When you work on the communications system, make sure that you obeyall the AMM safety precautions. This will prevent injury to persons and/ordamage to the aircraft. Here is an overview of main safety precautionsrelative to the communications system.Make sure that all persons stay away from the base of the HF antenna(in a zone of 5 meters radius) when it is energized. The antenna uses highpower when it transmits and can cause injury to persons.Do not transmit with the HF system during aircraft refueling.Transmission with the HF system during refueling can cause injury and/orstart a fire.When the mechanic call horn operates, the sound level is more than 110dB. Continuous exposure to noise at this level can harm your hearing.


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AIRBUS S.A.S.31707 BLAGNAC cedex, FRANCE

STMREFERENCE L0Y06082

MARCH 2006PRINTED IN FRANCEAIRBUS S.A.S. 2006

ALL RIGHTS RESERVED

AN EADS JOINT COMPANYWITH BAE SYSTEMS

Table of ContentsCommunications System IntroductionGeneral

Voice & Data Communication Systems PresentationGeneralVoice communication layoutData communication layoutCommunication systemsRadio communicationsSatellite communicationsOn-board communicationsWireless communications

Static discharging system

Radio & Audio Integrating Management System PresentationSystem architectureAudio managementRadio managementCalls managementAircraft callCabin crew callGround crew call

Cockpit Voice Recording System PresentationGeneralPrincipleRecordingPower supplyCVR Control Unit

External & Taxiing Aid Camera System PresentationGeneralSystemDisplayTaxi mosaic displayExternal monitoring display (optional)

Communications System Maintenance (1)Communications safety items

Documents

A380-LEVEL I - ATA 23 Communications