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    <ReturnTs>2024-05-01T07:34:17-04:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>366007131</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>INTERNATIONAL ASSOCIATION OF MACHINISTS &amp; AEROSPACE WORKERS</BusinessNameLine1Txt>
      </BusinessName>
      <InCareOfNm>% Alfonso M Garcia</InCareOfNm>
      <BusinessNameControlTxt>INTE</BusinessNameControlTxt>
      <ForeignPhoneNum>2192412700</ForeignPhoneNum>
      <USAddress>
        <AddressLine1Txt>1245 W 37TH AVENUE</AddressLine1Txt>
        <CityNm>HOBART</CityNm>
        <StateAbbreviationCd>IN</StateAbbreviationCd>
        <ZIPCd>46342</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>ALFONSO GARCIA</PersonNm>
      <PersonTitleTxt>SECRETARY-TREASURER</PersonTitleTxt>
      <SignatureDt>2024-05-01</SignatureDt>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>ALFONSO</PersonFirstNm>
        <PersonLastNm>GARCIA</PersonLastNm>
      </PersonFullName>
      <SSN>XXX-XX-XXXX</SSN>
    </SigningOfficerGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
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      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>N A</WebsiteAddressTxt>
      <Organization501cInd organization501cTypeTxt="5">X</Organization501cInd>
      <TypeOfOrganizationOtherInd>X</TypeOfOrganizationOtherInd>
      <TypeOfOrganizationOtherDesc>LABOR UNION</TypeOfOrganizationOtherDesc>
      <GrossReceiptsAmt>110697</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <MembershipDuesAmt>109393</MembershipDuesAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <SpecialEventsNetIncomeLossAmt>0</SpecialEventsNetIncomeLossAmt>
      <CostOfGoodsSoldAmt>677</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>-677</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>1304</OtherRevenueTotalAmt>
      <TotalRevenueAmt>110020</TotalRevenueAmt>
      <SalariesOtherCompEmplBnftAmt>85837</SalariesOtherCompEmplBnftAmt>
      <PrintingPublicationsPostageAmt>237</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>28787</OtherExpensesTotalAmt>
      <TotalExpensesAmt>114861</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-4841</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>94716</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>-142</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>89733</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>93171</BOYAmt>
        <EOYAmt>88330</EOYAmt>
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      <LandAndBuildingsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
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      <OtherAssetsTotalDetail>
        <BOYAmt>1545</BOYAmt>
        <EOYAmt>1403</EOYAmt>
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      <Form990TotalAssetsGrp>
        <BOYAmt>94716</BOYAmt>
        <EOYAmt>89733</EOYAmt>
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      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>94716</BOYAmt>
        <EOYAmt>89733</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>BETTERMENT OF WAGES HOURS AND WORKING CONDITIONS</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>OPTIONAL NA</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>0</ProgramServiceExpensesAmt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">ROBERT MARTINEZ</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>1356</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">CARL RINALDI</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>692</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">MARCUS DADE</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>692</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">DONOVON SWALBY</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>1211</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">RYAN SPERTI</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>1299</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">ALLEN KILBURY</PersonNm>
        <TitleTxt>RECORDING SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>2199</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">ALFONSO GARCIA</PersonNm>
        <TitleTxt>SECRETARY-TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>8143</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">MARK KUFAHL</PersonNm>
        <TitleTxt>SECRETARY-TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>4913</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">SHAUN O'CONNER</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>9076</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">EDMOND O'FARREL</PersonNm>
        <TitleTxt>CONDUCTOR SENTINEL</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>654</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd referenceDocumentName="IRS990ScheduleC">false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd referenceDocumentName="IRS990ScheduleN BinaryAttachment">false</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
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        <PersonNm>ALFONSO GARCIA</PersonNm>
        <USAddress>
          <AddressLine1Txt>1245 W 37TH AVENUE</AddressLine1Txt>
          <CityNm>HOBART</CityNm>
          <StateAbbreviationCd>IN</StateAbbreviationCd>
          <ZIPCd>46342</ZIPCd>
        </USAddress>
        <PhoneNum>2192412700</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
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    <IRS990ScheduleO documentId="IRS990ScheduleO1" documentName="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 8</FormAndLineReferenceDesc>
        <ExplanationTxt>| Other Revenues:, Amount:| REFUNDS, $1130| CHECKS LOST OR DAMAGED AND RETURNED TO CASH, $174|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>| Other Expenses:, Amount:| PER CAPITA, $2296| INTERNET, $498| PHONES, $315| SUPPLIES, $1114| VOLUNTARY DONATIONS, $13966| TRAVEL, $3998| MEETINGS, $6600|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 20</FormAndLineReferenceDesc>
        <ExplanationTxt>| Explanation:, Amount:| CHANGE IN FIXED ASSETS, $-142|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II, line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>| Explanation:, BOYAmount:, EOYAmount:| OFFICE EQUIPMENT, $1545, $1403|</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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