Designation:D7547−21AnAmericanNationalStandardStandardSpecificationforHydrocarbonUnleadedAviationGasoline1ThisstandardisissuedunderthefixeddesignationD7547;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversformulatingspecificationsforpurchasesofaviationgasolineundercontractandisintendedprimarilyforusebypurchasingagencies.1.2Unleadedaviationgasolinedefinedbythisspecificationisforuseinenginesandassociatedaircraftthatarespecificallyapprovedbytheengineandaircraftmanufacturers.Thisfuelisnotconsideredsuitableforuseinotherenginesandassociatedaircraftthatarecertifiedtouseonlyleadedaviationgasolinesofthesameoctanegrade.1.3Thisspecification,unlessotherwiseprovided,prescribestherequiredpropertiesofunleadedaviationgasolineatthetimeandplaceofdelivery.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D86TestMethodforDistillationofPetroleumProductsandLiquidFuelsatAtmosphericPressureD130TestMethodforCorrosivenesstoCopperfromPetro-leumProductsbyCopperStripTestD323TestMethodforVaporPressureofPetroleumProducts(ReidMethod)D873TestMethodforOxidationStabilityofAviationFuels(PotentialResidueMethod)D909TestMethodforSupercharge...
