Aircraft Accident Investigation Report

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Aircraft Accident Investigation Report The investigation for this report was conducted by Aircraft and Railway Accidents Investigation Commission about the aircraft accident of Japan Airlines Boeing 747-400D (an approach to JA8546 of the same airline) in accordance with Aircraft and Railway Accident Investigation Commission Establishment Law and Annex 13 to the Convention of International Civil Aviation for the purpose of determining cause of the aircraft accident and contributing to the prevention of accidents and not for the purpose of blaming responsibility of the accident. This English version report has been published and translated by Aircraft and Railway Accident Investigation Commission to make its reading easier for those who are not familiar with Japan as well as English speaking people. Although efforts are made to translate as accurate as possible, only the Japanese version is authentic. If there is difference in meaning of the texts between the Japanese version and the English version, texts in the Japanese version are correct. Junzo Sato, Chairman, Aircraft and Railway Accidents Investigation Commission ( BLANK ) Abbreviated words Abbreviated words used in this report are as follows: AC : Advisory Circular ACARS : Aircraft Communication Addressing and Reporting System ACAS : Airborne Collision Avoidance System ACC : Area Control Center ACMS : Aircraft Condition Monitoring System AFM : Airplane Flight Manual AIC : Aeronautical Information Circular AIDS : Aircraft Integrated Data System AIP : Aeronautical Information Publication ANO : Air Navigation Order AOM : Aircraft Operating Manual A/P : Auto Pilot ATC : Air Traffic Control AVT : Audio Visual Tutor BKN : Broken CA : Cabin Attendant CAP : Civil Aviation Authority Publication CAS : Computed Airspeed CBT : Computer Based Training CLR CFT : Clear of Conflict CNF : Conflict Alert CP : Chief Purser CPA : The Closest Point of Approach CRM : Crew Resource Management CVR : Cockpit Voice Recorder DFDR : Digital Flight Data Recorder EEC : Electronic Engine Control ENG : Engine FAA : Federal Aviation Administration FAR : Federal Aviation Regulations FL : Flight Level FO : First Officer ICAO : International Civil Aviation Organization JAA : Joint Aviation Authorities JAR : Joint Aviation Requirements JAR-OPS : Joint Aviation Requirements - Operations LOFT : Line Oriented Flight Training - ⅰ - MAC : Mean Aerodynamic Chord MCT : Maximum Continuous Thrust ND : Navigation Display NDB : Non-Directional Radio Beacon OJT : On the Job Training OM : OPERATIONS MANUAL OVC : Overcast PANS-ATM: Procedures for Air Navigation Services Air Traffic Management PANS-OPS: Procedures for Air Navigation Services Aircraft Operations PANS-RAC: Procedures for Air Navigation Services Rules of the Air and Air Traffic Services PF : Pilot Flying PFD : Primary Flight Display PIC : Pilot in Command PNF : Pilot Not Flying QM : QUALIFICATIONS MANUAL RA : Resolution Advisories RDP : Radar Data Processing System RPM : Revolutions Per Minute SCT : Scattered TA : Traffic Advisories TCAS : Traffic Alert and Collision Avoidance System THR REF : Thrust Reference TRM : Team Resource Management UTC : Coordinated Universal Time VHF : Very High Frequency VNAV : Vertical Navigation VOR : VHF Omni-Directional Radio Range VORTAC : VOR and TACAN(UHF Tactical Air Navigation aid) combination VSI : Vertical Speed Indicator - ⅱ - Remarks for usage of terms (1) Directions are expressed by magnetic directions, except for relative directions. (2) "Course" is used in the same meaning with "magnetic course". (3) "Heading" is used in the same meaning with "magnetic course", "course" or "magnetic heading". (4) As for "bank angle", "roll angle" is used in case that the value is cited from "roll angle" of DFDR. (5) "TCAS" is an abbreviation of Traffic Alert and Collision Avoidance System. "ACAS" is an abbreviation of Airborne Collision Avoidance System. Both expressions mean an aircraft collision avoidance system. The term "ACAS" is used in ICAO regulations, AIC issued by Civil Aviation Bureau and the regulations of European authorities. The term "TCAS" is used in the regulations of air traffic control facilities and aircraft operators, etc. and the regulations of the authority of the United States. In this report, the term "TCAS" is used in principle. The term "ACAS" is used in sentences cited from ICAO regulations, AIC issued by Civil Aviation Bureau or the regulations of European authorities - ⅲ - ( BLANK ) - ⅳ - CONTENTS 1PROCESSANDPROGRESSOFTHEACCIDENTINVESTIGATION2……… 1.1SummaryoftheAccident2…………………………………………………… 1.2OutlineoftheAccidentInvestigation2……………………………………… 1.2.1TheOrganizationoftheInvestigation2………………………………… 1.2.2TheImplementationoftheInvestigation3……………………………… 1.2.3InterimReportandProposals3………………………………………… 1.2.4PublicHearing3………………………………………………………… 1.2.5HearingsfromPersonsrelevanttotheCauseoftheAccident4………… 2FACTUALINFORMATION5…………………………………………………… 2.1FlightHistory5……………………………………………………………… 2.1.1FlightHistorybasedontheRecordingsoftheOnboardRecordersand ATCRecorder,etc.5……………………………………………………… 2.1.2StatementsofFlightCrewwithrespecttoFlightHistory……………11 2.1.2.1StatementsoftheCaptainofAircraft-A…………………………11 2.1.2.2StatementsofthePilotUnderTraining()TraineePilotof Aircraft-A…………………………………………………………13 2.1.2.3StatementsoftheFirstOfficerofAircraft-A……………………14 2.1.2.4StatementsoftheCaptainofAircraft-B…………………………15 2.1.2.5StatementsoftheFirstOfficerofAircraft-B……………………16 2.1.3StatementsofAirTrafficControllers…………………………………17 2.1.3.1StatementsoftheControllerUnderTraining()ATCtrainee……17 2.1.3.2StatementsoftheATCWatchSupervisor………………………18 2.1.3.3StatementsoftheCoordinator……………………………………19 2.1.4Situationsinthecabinatthetimeoftheaccident……………………20 2.1.4.1StatementsoftheCPandCAofAircraft-A……………………20 2.1.4.2StatementsofthepassengersofAircraft-A………………………21 2.2InjuriestoPersons…………………………………………………………22 2.3DamagetotheAircraft……………………………………………………23 2.4InformationontheCrewandAirTrafficControllers……………………24 2.4.1FlightCrew……………………………………………………………24 2.4.1.1FlightCrewofJALFlight907……………………………………24 2.4.1.2FlightCrewofJALFlight958……………………………………26 2.4.2FlightAttendantsofJALFlight907…………………………………27 2.4.3AirTrafficControllers…………………………………………………28 2.5AircraftInformation………………………………………………………30 2.5.1Aircraft-A………………………………………………………………30 2.5.2Aircraft-B………………………………………………………………30 --ⅴ 2.5.3WeightandCenterofGravity…………………………………………31 2.5.4FuelandLubricatingOils……………………………………………32 2.6MeteorologicalInformation………………………………………………32 2.6.1WeatherSynoptic………………………………………………………32 2.6.2SatelliteCloudInformationChartovertheAsiaPacificRegion……32 2.6.3AerologicalObservationData…………………………………………32 2.6.4ShizuhamaAirportAviationWeatherObservations…………………33 2.7AirNavigationFacilities……………………………………………………33 2.8Communications……………………………………………………………33 2.8.1OperationalConditionofRCAG………………………………………33 2.8.2ATCRecorderBackgroundNoiseLevel……………………………34 2.9InformationontheAircraftRecorders……………………………………34 2.9.1CVRRecording………………………………………………………34 2.9.2RecordingsoftheDFDR,ACMandAIDS…………………………34 2.9.3TimeCorrectionofRecordings………………………………………35 2.10MedicalInformation………………………………………………………37 2.10.1ThenumberofCabinAttendantsandPassengerssustainedinjuries…37 2.10.2DetailsofSeriousInjuries……………………………………………37 2.10.3DetailsofMinorInjuries……………………………………………39 2.11InformationonSearch,RescueandEvacuationrelevanttoSurvival, DeathorInjury……………………………………………………………40 2.11.1SituationinthecabinofAircraft-Aaftertheaccident………………40 2.11.2CorrespondenceofJALandRelevantFacilityontheGround………43 2.12TestsandResearchtoFindFacts…………………………………………44 2.12.1InvestigationoftheAircraft…………………………………………44 2.12.1.1TestsonAircraftEquipmentandAvionics……………………44 2.12.1.2InvestigationintoDamagetotheInteriorofAircraft-A's PassengerCabincausedbyGalleyCarts…………………………45 2.12.2InvestigationintotheOperationoftheTCAS………………………46 2.12.2.1OutlineofTCAS…………………………………………………46 2.12.2.2AnalysisoftheTCASAlerts……………………………………47 2.12.3TestFlightusingFlightSimulator,etc.………………………………50 2.12.3.1EngineThrustResponsetoMovementofThrustLevers………50 2.12.3.2FlightSimulatorTests……………………………………………50 2.12.4InvestigationintoATCRadarSystem………………………………56 2.12.4.1RadarDataProcessing()RDPsystem…………………………56 2.12.4.2CNF()ConflictAlert……………………………………………57 2.12.4.3RadarHand-Off…………………………………………………58 2.13OrganizationandManagementinformation………………………………59 --ⅵ 2.13.1Flightcrewproceduresatthetimeoftheaccident…………………59 2.13.1.1Standardflightcrewcomplements………………………………59 2.13.1.2Flightcrewdispositionandtaskassignmentatthetimeof theaccident………………………………………………………60 2.13.1.3Qualificationrequirementsofflightcrewmembers……………60 2.13.2Airroutecontrolservicesatthetimeoftheaccident………………62 2.13.2.1GeneralinformationofKantoSouth-Csector…………………62 2.13.2.2ControllerConsolePositionsandTaskAssignment……………63 2.13.2.3Qualificationrequirementsforcontrollers………………………63 2.13.2.4RequirementsforaATCwatchsupervisor……………………65 2.14Otherinformation…………………………………………………………66 2.14.1RegulationsrelatedtoTCASoperations……………………………66 2.14.1.1JapaneseRegulations……………………………………………66 2.14.1.2ICAORegulations………………………………………………68 2.14.1.3Aircraft-A'sManuals……………………………………………70 2.14.1.4Aircraft-B'sManuals……………………………………………74 2.14.1.5Regulationsappliedtoairtrafficcontrol………………………75 2.14.1.6U.S.A.Regulations………………………………………………76 2.14.1.7EuropeanRegulations……………………………………………77 2.14.2TrainingforTCASprocedure………………………………………78 2.14.2.1Trainingforflightcrewmembers………………………………78 2.14.2.2TrainingforAirTrafficControllers……………………………81 2.14.2.3Studymaterialscompiledbytheaircraftmanufacturers………82 3ANALYSIS……………………………………………………………………84 3.1General………………………………………………………………………84
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