Designation:F3231/F3231M−19StandardSpecificationforElectricalSystemsforAircraftwithCombustionEngineElectricalPowerGeneration1ThisstandardisissuedunderthefixeddesignationF3231/F3231M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverselectricalsystems,electricalequipment,andelectricalpowerdistributionaspectsofairwor-thinessanddesignforaeroplaneswithcombustionenginegenerationofelectricalpower.Thematerialwasdevelopedthroughopenconsensusofinternationalexpertsingeneralaviation.ThisinformationwascreatedbyfocusingonNormalCategoryAeroplanes.Thecontentmaybemorebroadlyapplicable;itistheresponsibilityoftheapplicanttosubstan-tiatebroaderapplicabilityasaspecificmeansofcompliance.1.2AnapplicantintendingtoproposethisinformationasMeansofComplianceforadesignapprovalmustseekguid-ancefromtheirrespectiveoversightauthority(forexample,publishedguidancefromapplicableCAAs)concerningtheacceptableuseandapplicationthereof.Forinformationonwhichoversightauthoritieshaveacceptedthisspecification(inwholeorinpart)asanacceptableMeansofCompliancetotheirregulatoryrequirements(hereinafter“theRules”),refertoASTMCommitteeF44webpage(www.astm.org/COMMITTEE/F44.htm).1.3Units—ThisstandardmaypresentinformationineitherSIunits,EnglishEngineeringunits,orboth;thevaluesstatedineachsystemarenotnecessarilyexactequivalents;therefore,toensureconformancewiththestandard,eachsystemshallbeusedindependentlyoftheother,andvaluesfromthetwosystemsshallnotbecombined.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationa...
