Designation:D8434−21AnAmericanNationalStandardStandardSpecificationforUnleadedAviationGasolineTestFuelContainingOrgano-metallicAdditive1ThisstandardisissuedunderthefixeddesignationD8434;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversformulatingspecificationsforpurchasesofanunleadedaviationgasolinetestfuelundercontractandisintendedsolelyforusebypurchasingagenciesfortestingpurposes.1.2Thisspecificationdefinesaspecifictypeofaviationgasolineforuseasanaviationspark-ignitionenginetestfuel.Itdoesnotincludeallgasolinessatisfactoryforreciprocatingaviationengines.Certainequipmentorconditionsofusemaypermitawider,orrequireanarrower,rangeofcharacteristicsthanisshownbythisspecification.1.3Theunleadedaviationgasolinetestfueldefinedbythisspecificationdoesexhibitsimilaroctaneperformancetothoseleadedfuelswithwhichtheexistingaircraftandground-basedfuelhandlingequipmenthavebeendesignedtooperate.1.4Issuanceofthisspecificationdoesnotconstituteap-provaltooperatecertificatedaircraftwiththistestfuel.Fuelsusedincertifiedenginesandaircraftareultimatelyapprovedbythecertifyingauthoritysubsequenttoformalsubmissionofevidencetotheauthorityaspartofacertificationprogram.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisspecification,unlessotherwiseprovided,prescribestherequiredpropertiesofunleadedaviationgasolinetestfuelatthetimeandplaceofdelivery.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstand...
