Table of Contents
1.0INTRODUCTIONANDDESCRIPTION
1.1PurposeofThisReport
1.2PurposeofBITE
1.3WhatBITEisNOT!
1.4NeedforUniformBITEPhilosophy
1.5GoalsforBITE
1.5.1TrustworthinessObjectives
1.5.2EconomicObjectives
1.5.2.1ReductionofDispatchDelays
1.5.2.2IncreasedAccuracyofMaintenance
1.5.2.3ReductioninSpecialTraining
1.5.2.4ReductioninCost-of-Ownership
1.5.2.5EconomicsofBITE
1.6RelationshipbetweenBITEandAIDS
1.7RelationshipbetweenBITEandACARS
2.0MAINTENANCECONCEPT
2.1General
2.2LineMaintenance
2.2.1FaultDetectionRoleofBITE
2.2.2FaultIsolationRoleofBITE
2.2.3ReturntoServiceRoleofBITE
2.2.4RegulatoryAspectsofBITE
2.3EnhancedMaintenance
2.4ShopMaintenance
2.5ACARS
3.0BITESYSTEMCONCEPTS
3.1General
3.1.1Dispatchability
3.1.2Maintainability
3.1.3CostEffectiveness
3.2BITEDesignPrinciples
3.2.1BITEEffectiveness
3.2.2ScopeofCFDSBITE
3.3BITEFunctions
3.3.1BiteFORStandaloneLRUs
3.3.1.1FaultDetection
3.3.1.2FaultAnnunciation
3.3.1.3FaultRecording
3.3.1.4FaultIsolation
3.3.2BITEforCFDS
3.3.2.1LRUPower-UpSelfTest
3.3.2.2LRUReplacementVerificationTest
3.3.2.3SystemPerformanceTest
4.0CENTRALIZEDFAULTDISPLAYSYSTEMCONCEPT
4.1GeneralBackground
4.2SystemConfiguration
4.3SystemOperation
4.3.1SystemInitialization
4.3.2CFDUOperation
4.3.3SubsystemBITEInterrogation
4.3.3.1FAULTSTATUS
4.3.3.2PREV.FAULTDATA
4.3.3.3POWER-UPTEST
4.3.3.4INSTALLVERIFY
4.3.3.5SYSTEMPERFORMANCE
4.3.3.6DETAILDATA
4.3.3.7PAUSE/CONTINUE
4.3.3.8NEXTMENU/LASTMENU
4.3.3.9EXIT
4.3.4RemoteFaultDisplayUnit
4.4DataStorage
4.4.1MemorySize
4.4.2FaultStorage
4.4.2.1FlightLegMemory
4.4.2.2TimeandDataIdentification
4.4.2.3FlightNumberIdentification
4.4.2.4AltitudeandAirspeedIdentification
4.4.2.5LRUIdentification
4.4.2.6OtherData
4.5ACARS
ATTACHMENTS
1CFDSBlockDiagram
2CFDUFrontPanel,Version1
3CFDUFrontPanel,Version2
4ExamplesofSystemBITEMemoryStructure
APPENDIXES
1CFDSHardwareDescription
2CFDIU-CFDSSubsystemLRUInterfaceProtocol
3CFDIU-CFDUInterfaceProtocol
4CFDIU-CFDUPrinterProtocol
5CFDIU-ACARSProtocol
6CFDIU-Storage(RESERVED)
7BIT-OrientedFaultReportingProtocol Abstract
Describes BITE's role in the airlines' maintenance concept and the BITE characteristics needed in all avionic equipment. Also includes a description of a Centralized Fault Display System. BITE should help the user to gain a reduction in overall costs of maintenance, an improvement in the effectiveness of maintenance, simplification of the procedures and a reduction of special training needed for maintaining the more complex avionics systems.
