Table of Contents
Foreword
ViewsoftheAirTransportAssociationofAmerica
TableofContents
1.0PurposeandScope
1.1Introduction
1.2SystemOverview
1.3SystemDescription
1.3.1BaselineTCASSystem
1.3.2AdditionalFeatures
1.4OperationalApplications
1.4.1TCASOperatesIndependentlyoftheGroundATC
System
1.4.2ControlofInteractionWiththeAirTraffic
ControlSystem
1.4.3ManeuverCapabilityRelatedtoSeparation
Assurance
1.5OperationalGoals
1.6AssumptionsandLimitations
1.6.1ImprovementsorAlternativeTechniques
1.6.2Enhancements
1.6.3DegreeofProtectionProvided
1.6.4TransponderPopulation
1.6.5DensityofTransponder-EquippedAircraft
1.6.6TCASPerformanceMonitor
1.6.7AltimeterOperation
1.6.8AircraftPerformanceLimitations
1.7TestProcedures
1.7.1EnvironmentalTests
1.7.2BenchTests
1.7.3InstalledSystemTests
1.7.4ComputerPerformanceValidationTest
1.7.5Interoperability
1.8GlossaryofTerms
1.9Abbreviations
1.10References
2.0TCASEQUIPMENTREQUIREMENTSANDTESTPROCEDURES
2.1GeneralRequirements
2.1.1Airworthiness
2.1.2GeneralPerformance
2.1.3FederalCommunicationsCommissionRules
2.1.4Self-Test
2.1.5PerformanceMonitoring
2.1.6InterrogationTestModes
2.1.7Controls
2.1.8DisplayFunctions
2.1.9EquipmentConfiguration
2.1.10ModeSTransponderCapabilities
2.1.11TCASCombinedwithOtherAircraftSystems
2.1.12AuralAnnunciation
2.1.13EffectsofTests
2.2MinimumPerformanceStandards-Standard
ConditionsandSignals
2.2.1DefinitionofStandardConditions
2.2.2ReceiverCharacteristics
2.2.3TCASTransmitterCharacteristics
2.2.4TCASTransmitterPulseCharacteristics
2.2.5TCASPulseDecoderCharacteristics
2.2.6InterferenceLimiting
2.2.7TCASMessageFormat
2.2.8TCASThreatDetectionandTracking
2.2.9CollisionAvoidanceAlgorithms
2.2.10AutomaticPerformanceMonitoring,Self-Testand
PerformanceValidation
2.2.11AircraftSuppressionBus
2.2.12TCASDataHandlingandInterfaces
2.2.13TCASAntennaSystem
2.2.14TCASDisplayCapability
2.2.15BearingEstimation
2.2.16High-DensityTechniques
2.3EquipmentPerformance-EnvironmentalConditions
2.3.1TemperatureandAltitudeTests(DO-160A,Section
4.0)
2.3.2TemperatureVariationTest(DO-160A,Section5.0)
2.3.3HumidityTest(DO-160A,Section6.0)
2.3.4ShockTests(DO-160A,Section7.0)
2.3.5VibrationTests(DO-160A,Section8.0)
2.3.6ExplosionTest(DO-160A,Section9.0)(When
Required)
2.3.7WaterproofnessTest(DO-160A,Section10.0)
2.3.8FluidsSusceptibilityTests(DO-160A,Section
11.0)
2.3.9SandandDustTest(DO-160A,Section12.0)(When
Required)
2.3.10FungusResistanceTest(DO-160A,Section13.0)
(WhenRequired)
2.3.11(SaltSprayTest(DO-160A,Section14.0)(When
Required)
2.3.12MagneticEffectTest(DO-160A,Section15.0)
2.3.13PowerInputTests(DO-160A,Section16.0)
2.3.14VoltageSpikeConductedTest(DO-160A,Section
17.0)
2.3.15AudioFrequencyConductedSusceptibilityTest
(DO-160A,Section18.0)
2.3.16InducedSignalSusceptibilityTest(DO-160A,
Section19.0)
2.3.17RadioFrequencySusceptibilityTest(Radiatedand
Conducted)(DO-160A,Section20.0)
2.3.18EmissionofRadioFrequencyEnergyTest(DO-160A,
Section21.0)
2.4EquipmentTestProcedures
2.4.1DefinitionofTermsandConditionsofTest
2.4.2DetailedTestProcedures
2.4.3HighDensityTechniques(2.2.16)
2.4.4ComputerPerformanceValidation
2.4.5Cross-ReferenceofRequirementsandAssociated
Tests
3.0INSTALLEDEQUIPMENTPERFORMANCE
3.1TestConditions
3.1.1PowerInput
3.1.2AssociatedEquipment
3.1.3Environment
3.1.4AdjustmentofEquipment
3.2EquipmentInstallation
3.2.1EquipmentAccessibility
3.2.2DisplayVisibility
3.2.3Interference
3.2.4PhysicalInstallation
3.2.5AircraftPowerSource
3.2.6TransmissionLines
3.2.7AntennaLocation
3.2.8Altimetry
3.3MinimumInstalledEquipmentPerformance
Requirements
3.4TestProceduresforInstalledEquipment
Performance
3.4.1ConformityInspection
3.4.2GeneralTestProcedures
3.4.3AntennaGainPerformance
3.4.4FlightTestProcedures
3.4.5BearingEstimationTests
MEMBERSHIP
AppendixAAltimetryPerformanceRequirements
VolumeIICollisionAvoidanceAlgorithms
FIGURES
2.1TCASMode-COnlyALL-CALLInterrogationSequence
2.2ModeSTransmission
2.3ATCRBSReply
2.4ModeSReply
2.5InterferenceLimitingFlowDiagram
2.6ModeSInterrogationorUplinkFormatsUsedby
TCAS
2.7ModeSReplyorDownlinkFormatsUsedbyTCAS
2.8OmnidirectionalWhisper-ShoutSequence
2.9TimingforLowest-PowerStepsinOmnidirectional
Whisper-ShoutSequenceforTopAntenna
2.9aInitialProcessingforConflictwith
TCAS-EquippedThreat
2.10HighDensityWhisper-ShoutSequence
2.11InitialConditionsforErrorDetection
2.12FinalConditionsofErrorDetectionfor56and
112BitReplies
2.13InitializationofErrorPatternLocationLogic,
56and112BitReplies
2.14GenerationofCorrectionEnableBit
2.15CorrectionofDecisionSequence
2.16FinalStateofErrorCorrectionFunction
2.17SignalRelationshipBetweenTCAS,ModeSTest
Equipment
2.18DefinitionofVariablesAssociatedwiththe
LinearMovementofTargetsintheRange
Dimension
2.19FrequencyTestSetup
2.20PeakPowerTestSetup
2.21WhisperShoutandInterrogationRateJitterTest
Setup
2.22ModeSTransmissionTestSetup
2.23DPSKPhaseReversalToleranceTestSetup
2.24ModeSRFSpectrumTestSetup
2.25UnwantedOutputPowerTestSetup
2.26GeometricalIllustrationofMultipath
2.27RealMultipath
2.28SimulatedMultipath
2.29ReplySequenceforRangeCorrelationTest.
ScenarioA(above10kft)
2.30ReplySequenceforRangeCorrelationTest.
ScenarioB(below10kft)
2.31ReplySequenceforAltitudeCorrelationTest
2.32Rangevs.TimePlotforIntruders1,2,7and8
2.33AltitudeTrackingTest,ScenarioA
2.34AltitudeTrackingTest,ScenarioB
2.35Rangevs.TimePlotforIntruders1,223and24
3.1RampTestGeometryConsiderations
TABLES
2.1FieldIndex
2.2DeterminationofCodePulseEstimateandCode
PulseAgreementforall64PossibleCombinations
of3CodePulsesandTheirAssociatedConfidence
Bits
2.3LogicParameterValues
2.4Deleted
2.5ConfidenceFactorRequiredfora90%Confidence
Level
2.6MinimumnumberofTrialsvs.NumberofFailures
fortheRequiredProbabilityofSuccessValues
Specifiedin2.4.2.1.2
2.7SquitterandReplyProbabilityvs.Rangeand
Altitude
2.8SquitterandReplyProbabilityvs.Rangeand
Altitude Abstract
Contains the rationale for equipment characteristics, minimum performance standards, bench test procedures, and installed equipment performance.
