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MaintenanceTrainingCenter
B787ME&AVTypeITrainingManual
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B787
TechnicalTrainingManualMaintenanceCourseME&AVI（GEnx）
LevelI&II–ATA50CargoAndAccessoryCompartments
THISMANUALISFORTRAININGPURPOSESONLY.
NOMAINTENANCEACTIONSHOULDBETAKENASARESULTOFINFORMATIONCONTAINEDINTHISNOTEBOOK.
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ATA50-00CargoAndAccessoryCompartments(I)
Description
Thislessonprovidesinformationoncomponents,interfacesandoperationoftheNGSsystem.
Objectives
Statethepurposeofthesystem.
Identifythemajorsystemcomponentsofthesystem.Statethepurposeofthemajorsystemcomponents.Statethegenerallocationofmajorsystemcomponents.
Describethemajorsysteminterfacesandbeabletoexplainthenormalsystemfunction.
Statesafetyprecautionsrelatedtoenteringaninertedfueltank
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ATA50-00CargoandAccessoryCompartments(I)
GeneralDescription-Introduction-CargoandAccessoryCompartment
General
Thecargoandaccessorycompartmentsystems:
Loadandunloadcargo
Protectloadedcargo
Isolatetheloadedcargofromotherairplanesystems.
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GeneralDescription-Introduction-CargoandAccessoryCompartment
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ATA50-00CargoAndAccessoryCompartments(I)
GeneralDescription-SystemDescription
General
Thesearetheprimarysubsystemsofthecargoandaccessorycompartmentssystems:
Cargocompartmentfurnishings
Cargohandlingsystem(CHS).2.
CargoCompartmentFurnishings
Thesearethecargocompartmentfurnishings:
Linersandpanels
Floorpanelsandwalkways
Decompressionpanels
Dividersandnets
Accessdoorsandpanels.
ThecargocompartmentfurnishingssupplyClassCfireprotectionandisolationoffireextinguishingagentfromthepassengercompartment.3.
CargoHandlingSystem(CHS)
ThereisaforwardCHSandanaftCHS.The2systemsoperatethesame.TheCHSineachcargocompartmenthasequipmentanddevicestoautomaticallyloadorunloadunitloadingdevices(ULD)
intooroutofthecargocompartments.ThereisequipmenttoautomaticallymoveULDsinthecargocompartments,also.TherearedevicesthatalignULDsduringtheirmovementanddevicestolockthemintheircorrectlocations.
Thereare3cargocompartments:
Forwardcargocompartmentforunitloadingdevices(ULD)and/orpallets
Aftcargocompartmentforunitloadingdevices(ULD)and/orpallets
Bulkcargocompartmentforloosecargoand/orbaggage.
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ATA50-10CargoCompartments(I)
GeneralDescription-Introduction
General
TheprimarycargocompartmentfurnishingsaretheliningsandpanelsthatisolatethecargofromotherareasoftheairplanetogiveClassCfireprotectionandkeepfireextinguishingagentfumesfromthe
passengercompartment.temperaturecontrol.
These
devices
also
give
a
closed
area
for
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GeneralDescription-SystemDescription
General
Cargocompartmentfurnishingsareinall3cargocompartments.Therearedifferentmaterialsusedinthelinings,panels,andotherdevicesofthecargocompartmentfurnishings.Manyoftheliningsandpanelshaveburn-throughtimelimitsfortheClassCfireprotection.Somepanelsareflexibletogiveaccesstoothersystemsinstalledbehind,above,orbelowthem.Somepanelshaveemergencyfunctions.Otherpanelshavecargohandlingfunctionsonly.
Thesearethecomponentsofthecargocompartmentfurnishings:
Ceilingliners
Endwallliners
Verticalsidewalllinersandaccesspanels
Slopingsidewallliners
Cheekpanels
Supplementalcoolingunit(SCU)enclosurepanels
Dividernet
Barriernet
Doornet
Floorpanels.
Thereareanumberofcargohandlingdevicesonthefloorofthecargocompartmentthatarepartofthecargoloadingsystem.
ThesedevicesareusedtogiveClassCfireprotectionandgiveaclosedareafortemperaturecontrol:
Ceilingliners
Endwallliners
Sidewallliners
Cheekpanels.
TherearesealingdevicesforthelinersandpanelsinthecargocompartmentsfortheClassCfireprotection.Insomelocations,accesstosystemsbehindthelinersisbyremovalofsnapconnectionsthatholdthelinerstotheairplanestructure.Inotherlocations,accessisbyremovalofscrewsthatholdanaccesspanelinplace.Therearedecompressionpanelsthatopenwhenthepressuredifferencebetweenthecargocompartmentandthepassengercompartmentistoolarge.Thebarriernetsanddividernetsintheaftandbulkcargocompartmentskeepthecargoinplace.Thereisadoornettokeepthecargocompartmentdoorfromblockagebycargoitems.
Theforwardandaftcargocompartmentshavewalkwaysthatusethefloorpanels.Thewalkwaysletthecargohandlersmoveinthecargocompartments.Thebulkcargocompartmenthavefloorliners.
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GeneralDescription-SystemDescription-ForwardCargoCompartment
General
Theforwardcompartmentholds:
Cargocontainers
Pallets
Oversizeditems.
Cargodooraccessisontheforward,rightsideofthefuselage.Compartmentfeaturesinclude:
Liningpanels
Decompressionpanels
Floorpanels
Forwardequipmentcenterbulkheadpanel.
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ComponentsDescription-Lining
General
Thecargocompartmentliningisolatesheatorsmokeandextinguishingagentsfromotherareasoftheairplane.
Theliningismadeoffiberglasswithinsulationontheback.Liningpanelsinclude:
Verticalsidewall
Slopingsidewall
Endwall
Cargodoor
Ceilingpanels.
Supplementalpartsinclude:
Fasteners
Tape.
fire
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ComponentsDescription–Lining
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ATA50-10CargoCompartments(II)
ComponentsDescription-DecompressionPanels
General
Thecargocomparmentdecompressionpanelsprovidedifferentialpressurereliefifthereisasuddenpressurechangebetweenthecabinandcargocompartments.
Thisprotectstheairplanestructure.
Thereare2decompressionpanelsintheforwardcompartmentand2intheaftcompartment.
Thepanelsarepartoftheisolationsystem.
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ComponentsDescription-ForwardEEPanel
General
TheforwardequipmentcenterbulkheadpanelgivesanaccessfromtheforwardcargocompartmenttotheFWDEEbay.
Thebulkheadhasadoorforequipmentcenteraccess.Thedoorisattachedwitharestraintand5latches.
Thereare3hingesthatletthedoorswingfromthebulkheadpanel.
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ComponentsDescription-ForwardEEPanel
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ComponentsDescription-FloorPanel
General
Cargocompartmentfloormaterialisahoneycombcompositecorewithtopandbottomfacesheets.
Thepanelshaveanon-skidsurfacetoslippage.
Thepanelsarebetweentherollertrays.Theyareattachedwithscrews.
decrease
the
possibility
of
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ComponentsDescription-FloorPanel
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ATA50-10CargoCompartments(II)
GeneralDescription-SystemDescription-AFTCargoCompartment
General
Theaftcargocompartmentholds:
Cargocontainers
Pallets
Oversizeditems.
Cargodoorisontheaft,rightsideoffuselage.CompartmentFurnishings:
(Sameasforwardcompartment).
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GeneralDescription-SystemDescription-BulkCargoCompartment
General
Thebulkcargocompartmentisusedtocarrylooseotherindividualarticlesofcargo.
Cargodoorisontheaft,leftsideoffuselage.Compartmentfurnishings:
Liners-sameasfwdandaftcargocompartments
Doorprotector
Floorpanel
Barriernet.
baggage
and
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ComponentDescription-BulkCargoCompartmentFloorPanel
General
Thebulkcargocompartmentfloorpanelsletgroundpersonnelmovearoundthebulkcargocompartmentandloadloosecargo.ThefloorpanelshaveafunctionwiththecargocompartmentliningstosupplyClassCfireprotectioninthecargocompartment.
Thefloorpanelsmakeupthefloorofthebulkcargocompartment.Thefloorpanelsarebetweentheslopingsidewallsontherightsideandthesupplementalcoolingunitenclosurepanelsandbulkcargodoorontheleftside.Thepanelsextendfromthedividernettothe
bulkcargocompartmentendwall.Withthe
cargocompartment
liningsandotherpanels,thebulkcompartmentisolationsystem.
cargo
floor
is
partofthecargo
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ComponentDescription-BarrierNet
General
Thebarriernetkeepsloosecargointhebulkcargocompartmentfrommovementintotheaftcargocompartment.
Thebarriernetextendsfromtherightsidetotheleftsideoftheforwardendofthebulkcargocompartment.Thebarriernetattachesverticallytothefloorandtheceiling.Thereisattachmentonbothsidesinthecargocompartment.Thebarriernetletsairmovefromonecargocompartmenttotheother.
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ComponentDescription-BarrierNet
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ATA50-10CargoCompartments(II)
ComponentDescription-BulkCargoCompartmentAftEndWall
General
Thebulkcargocompartmentaftendwallclosestheaftlimitofthebulkcargocompartment.TheendwallsuppliesClassCfireprotectionwiththeaftandbulkcargocompartmentsliningsandotherpanels.
Therearedifferentequipmentbehindthesomeoftheendwallinstallation.Withthecargocompartmentliningsandotherpanels,theendwallispartofthecargocompartmentsisolationsystem.
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GeneralDescription-BulkCargoCompartmentAftEndWall
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ATA50-10CargoCompartments(II)
ComponentDescription-CargoCompartmentDecompressionPanel
General
Thecargocompartmentdecompressionpanelsprovidedifferentialpressurerelieftoprotectfromstructuralfailureinconditionsofsuddenhighpressuredifferencebetweenthecabinandcargocompartments.
Thereare2decompressionpanelsintheforwardcompartmentand2decompressionpanelsintheaftcargocompartment.Thepanelsarepartofthecargocompartmentisolationsystemofliningsandotherpanels.Pressurereliefoccurswhenthedifferentialpressurepushesthedecompressionpanelfromitsinstalledposition.Thisletsalargequantityofairmovequicklyfromonecompartmenttotheother.Thispreventsstructuraldamageduetolargepressuredifferencesbetweenthecompartments.
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GeneralDescription-CargoCompartmentDecompressionPanel
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ComponentDescription-EquipmentCenterBulkheadPanel
General
Theequipmentcenterbulkheadpanelclosesthelimitofthecargocompartment.TheequipmentcenterbulkheadpanelsuppliesClassCfireprotectionwiththecargocompartmentliningsandotherpanels.
Withthecargocompartmentliningsandotherpanels,thebulkheadpanelispartofthecargocompartmentisolationsystem.
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GeneralDescription-EquipmentCenterBulkheadPanel
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ComponentDescription-ForwardCargoCompartmentAftEndWall
General
Theforwardcargocompartmentaftendwallclosestheaftlimitoftheforwardcargocompartment.ThestationendwallsuppliesClassCfireprotectionwiththecargocompartmentliningsandotherpanels.
Theductsandmanifoldoftheairconditioningdistributionsystemarebehindtheendwall.Maintenancepersonnelcanopentheendwallforaccesstothesystemsbehindit.Withthecargocompartmentliningsandotherpanels,theendwallispartofthecargocompartmentisolationsystem.
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GeneralDescription-ForwardCargoCompartmentAftEndWall
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ATA50-21CargoHandingSystem(I)
GeneralDescription–Introduction-CargoHandingSystem
General
Thecargohandlingsystem(CHS)useselectrically-powereddevicesandmanualdevicesformovementofcargoinunitloadingdevices(ULD)intoandoutoftheforwardandaftcargocompartments.ThesedevicesalsomoveULDsinthecargocompartmentsforward
andaft.OtherdeviceshelpaligntheULDspreventunwantedmovementoftheULDs.
during
movement
or
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ATA50-21CargoHandingSystem(I)
GeneralDescription–SystemDescription-CargoHandingSystem
General
Theforwardandaftcargocompartmentshavecargohandlingsystems(CHS).TheCHSuseselectrically-powereddevicestomovetheunitloaddevices(ULD).TheCHSusesmanually-operatedmechanicaldevicestoholdtheULDsinplace.Thereisacontrolpanelatthecargodoorofeachcargocompartmenttooperatethesystem.
TheCHSsoftheforwardandaftcargocompartmentsarethesame.Thecomponentsofthe2CHSsarethesame.ThesearethecomponentsofeachCHS:
Ballpanels
PDUs
Endlocks
Partialloadstops
Lateralguides
Sideguiderails
Rollertrays
Guiderollers
Rolloutstop/locks
Retractableguideroller/lock
Centerguides
Controlpanelwithjoystick
Secondaryjoystick
Cargomaintenanceanddisplayunit(CMDU).
TheCHShasaninterfacewiththeCCSfordisplayandcontrol.ULDsmoveintooroutofthecargocompartmentthroughtheopencargodoorandacrossguiderollersofthedoorcutoutandontheballpanels.Thelaterally-installedPDUsmovetheULDsinoroutofthecargocompartment.TheballpanelsletcargoloadingpersonnelaligneachULD.Thelongitudinally-installedPDUsmovetheULDsforwardoraftinthecargocompartmentonrollertraysintooroutofposition.
ThereareguidestokeeptheULDinthecorrectalignmentasitmoves.Duringtheloadoperation,whentheULDisinposition,theverticalandlateralrestraintdevicesholditinposition.TheendlocksarethelimitforthemovementateachendofthecargocompartmentduringloadoperationofthefirstULDs.ThesideguiderailsarethelaterallimitsofULDs.
ThecontrolpanelgivescontrolforoperationsofthelateralorlongitudinalPDUs.DuringlongitudinalmovementofULDs,itgivescontrolfortheleftorrightlongitudinalPDUsorthetwosides,
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together.ThecontrolpanelcancontrolPDUsinpairsoringroups.ThecontrolpanelgetsdatafromtheCMDUthatletstheCHSoperateonlywhenthecargodoorisfullyopen.
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GeneralDescription–SystemDescription-CargoHandingSystem
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ComponentsDescription–DoorwayEntranceGuide
General
The2doorwayentranceguidesaligncargomovementfromloaderintothecargocompartment.
Thisalignstheunitloadingdevices(ULD)withtheballpanels.
TheguideshavearollerthatletstheULDmovepastthem.
Theyareontheforwardandaftsidesofeachcargodoorsill.
the
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ComponentsDescription–DoorwayEntranceGuide
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ATA50-21CargoHandingSystem(II)
ComponentDescription–SillRoller
General
Thesillrollerisaninterfacedevicetomakesurethattheunitloaddevice(ULD)caneasilymovethroughthecargodooropeningtoorfromthecargoloaderduringgroundoperations.
Thereare5sillrollersineachcargocompartmentdooropening.Eachhaveanchorfittings.Theheightofthesillrollerissameheightastheballsoftheballpanel.WhentheULDmovesfromtheloaderacrossthecargodoorsill,thesillrollermakessureitisatthecorrectheightsoitcangoontheballpanel.
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ComponentDescription–SillRoller
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ATA50-21CargoHandingSystem(II)
ComponentDescription–VariableLead-InGuide
General
Thevariablelead-inguidealignscontainersastheymoveoverthedooredgeintooroutofthecargocompartment.
Theinstallationofthevariablelead-inguideisontheedgeofthecargodooropening.Theguidecanbeintheuppositionorthedownposition.
Itmustbeincompartment.
the
down
position
to
move
pallets
into
the
cargo
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ComponentDescription–VariableLead-InGuide
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ATA50-21CargoHandingSystem(II)
ComponentDescription–RolloutStop/Lock
General
Therolloutstop/lockpreventslateralmovementofthelastloadedunitloaddevice(ULD).
Thereare3rolloutstop/locksinthecargodoorareaofthecargocompartment.Theinstallationofthestop/locksisontheouteredgeofthedooropening.Eachstop/lockhasalateralrestraintandaverticalrestraint.Therestraintsaresetupordown,manually.Thestop/locksmustbesetdowntomoveULDsinoroutofthecargocompartment.
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ComponentDescription–RolloutStop/Lock
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ATA50-21CargoHandingSystem(II)
ComponentDescription–BallTransferUnit
General
-Theballtransferunit(BTU)isthepartoftheballpanelwhichletscargomoveeasilyinalldirections.
Itsupportsloadsfromcargoduringhandlingandflight.BTUsarelinereplaceableunits(LRU).
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ComponentDescription–BallTransferUnit
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ComponentDescription–BrakingCaster
General
Brakingcastersstopremainingmovementofaunitloaddevice(ULD)intheballpanelareaofthecargocompartmentwhentheliftpowerdriveunits(PDUs)nolongermovetheULD.
Thebrakingcastersareonlyintheballpanelarea.TheyarenecessarybecausetheliftPDUsareinthatareaanddonothaveabrakesystem.WhentheliftPDUstopsitsmovementofaULD,thePDUgoesdownandcannotstoptheULD.ThebrakingcasterstopstheremainingmovementoftheULD.Thereisnoexternalcontrolofthebrakingcaster.
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ComponentDescription–BrakingCaster
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ComponentDescription–CenterStopAssembly
General
Thecenterstopassemblyholdspalletsinplacewhenloadedinthecargocompartment.
Theinstallationofthecenterstopassemblyisoncenterlineofthecargocompartment.Thecenterassemblyhasalongitudinalstopfor
containers.restraints.
The
center
stop
assembly
has
vertical
and
longitudinal
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ComponentDescription–CenterStopAssembly
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ComponentDescription–RollerTray
General
Therollertrayssupplyeasymovementofunitloaddevices(ULDs)longitudinallyinthecargocompartment.
Therearemanylongitudinalinstallationsofrollertraysinthecargocompartments.Eachrollertrayhasmanyrollersalongitslength.The
powerdriveunits(PDU)usetherollertraysThePDUsmovetheULDsontherollers.
for
their
installation.
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ComponentDescription–RollerTray
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ATA50-21CargoHandingSystem(II)
ComponentDescription–CenterGuide
General
Thecenterguidesalignthesmallunitloaddevice(ULD)duringlongitudinalmovementinthecargocompartmentandkeepsthesmallULDsapartlaterallyfromothersmallULDs.
Theinstallationofthecenterguidesisstructuralinallareas,includingintheballpanelareas.Theirlocationisonthecenterlineofthecargocompartmentfloor.AslargerULDsmoveoverthem,thecenterguidesmovedownagainstaspring.Thecenterguideshaverollersandverticalrestraintsontheiroutboardsides.Theguideslockdown,ifnecessary.Iflockeddown,apushonareleaselevercausesthecenterguidetomoveup.
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B787ME&AVTypeITrainingManual
ComponentDescription–CenterGuide
Version00
ATA50-21CargoHandingSystem
2011/10/25
Page59
MaintenanceTrainingCenter
B787ME&AVTypeITrainingManual
ATA50-21CargoHandingSystem(II)
ComponentDescription–SideGuideRail
General
Thesideguiderailsaligntheunitloaddevice(ULD)asitmovesforwardoraftinthecargocompartment.
Theinstallationofthesideguiderailsisalongthesidesofthecargocompartmentatthelevelofthefloor.Theguiderailsareoutboardoftheleftandright,outboardrollertrays.Theguiderailshaverollersfor
theULDstomoveanchorfittings.
against.
They
also
have
vertical
restraints
and
Version00
ATA50-21Car
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