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1、Number：CTSO-C95aDateofapproval：Aug24,2016Approvedby：YangZhenmeiChinaCivilAviationTechnicalStandardOrderThisChinaCivilAviationTechnicalStandardOrder(CTSO)isissuedaccordingtoPart37oftheChinaCivilAviationRegulations(CCAR-37).EachCTSOisacriterionwhichtheconcernedaeronauticalmaterials,partso
2、rappliancesusedoncivilaircraftmustcomplywithwhenitispresentedforairworthinesscertification.MachMeters1.Purpose.ThisChinaCivilAviationTechnicalStandardOrder(CTSO)isformanufacturersofmachmeterapplyingforaCTSOauthorization(CTSOA).ThisCTSOprescribestheminimumperformancestandards(MPS)thatmac
3、hmetermustfirstmeetforapprovalandidentificationwiththeapplicableCTSOmarking.2.Applicability.ThisCTSOaffectsnewapplicationssubmittedafteritseffectivedate.MajordesignchangestoarticleapprovedunderthisCTSOwillrequireanewauthorizationinaccordancewithsection21.310ofCCAR-21R3.3.Requirements.Ne
4、wmodelsofmachmetersidentifiedandmanufacturedonoraftertheeffectivedateofthisCTSOmustmeettheMPSqualificationanddocumentationrequirementsinSAEInternational’sAerospaceStandard-1-CAACCTSO-C95a(AS)8018,“MinimumPerformanceStandardforMachMeters”，RevisionA,(September1,1996).a.Functionality.ThisC
5、TSO’sstandardsapplytoequipmentintendedtoindicatethemachnumber,whenconnectedtosourcesofstatic(Ps),andtotal(Pt),orimpact(Pt-Ps)pressure.ThisCTSOalsoincludesMPSforequipmentintendedtoperformthesamefunctionwhenconnectedtoelectricaloutputsofthesamesources.b.FailureConditionClassification.Fail
6、ureofthefunctiondefinedinparagraph3.aofthisCTSOisamajorfailurecondition.Developthesystemto,atleast,thedesignassurancelevelequaltothisfailureconditionclassification.c.FunctionalQualification.DemonstratetherequiredperformanceundertestconditionsinSAEAS8018,RevisionA.d.EnvironmentalQualific
7、ation.TesttheequipmentaccordingtoRTCA/DO-160E,“EnvironmentalConditionsandTestProceduresforAirborneEquipment”,datedDecember9,2004.e.SoftwareQualification.Ifthearticleincludessoftware,developthesoftwareaccordingtoRTCA/DO-178B,“SoftwareConsiderationsinAirborneSystemsand-2-CAACCTSO
