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      <PymtTravelEntrtnmntPubOfclGrp>
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      <ConferencesMeetingsGrp>
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      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>102150</TotalAmt>
      </InterestGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>0</TotalAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>154693</TotalAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>6831</TotalAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>VAULT RENTAL</Desc>
        <TotalAmt>8959</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BROKER COMMISSION EXPENSE</Desc>
        <TotalAmt>9412</TotalAmt>
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      <TotalFunctionalExpensesGrp>
        <TotalAmt>787255</TotalAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
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      <SavingsAndTempCashInvstGrp>
        <BOYAmt>157432</BOYAmt>
        <EOYAmt>140402</EOYAmt>
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      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
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      <AccountsReceivableGrp>
        <BOYAmt>7300</BOYAmt>
        <EOYAmt>9609</EOYAmt>
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      <ReceivablesFromOfficersEtcGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
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      <RcvblFromDisqualifiedPrsnGrp>
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        <EOYAmt>0</EOYAmt>
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      <OthNotesLoansReceivableNetGrp>
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        <EOYAmt>0</EOYAmt>
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      <InventoriesForSaleOrUseGrp>
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        <EOYAmt>0</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>227621</BOYAmt>
        <EOYAmt>142377</EOYAmt>
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      <LandBldgEquipCostOrOtherBssAmt>14184963</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>6748685</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
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        <EOYAmt>7436278</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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        <EOYAmt>2122874</EOYAmt>
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      <InvestmentsOtherSecuritiesGrp>
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        <EOYAmt>0</EOYAmt>
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      <InvestmentsProgramRelatedGrp>
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        <EOYAmt>0</EOYAmt>
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      <IntangibleAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
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      <OtherAssetsTotalGrp>
        <BOYAmt>146841</BOYAmt>
        <EOYAmt>160992</EOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>10292807</BOYAmt>
        <EOYAmt>10012532</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>124284</EOYAmt>
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      <GrantsPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </GrantsPayableGrp>
      <DeferredRevenueGrp>
        <BOYAmt>25076</BOYAmt>
        <EOYAmt>25698</EOYAmt>
      </DeferredRevenueGrp>
      <TaxExemptBondLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TaxExemptBondLiabilitiesGrp>
      <EscrowAccountLiabilityGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </EscrowAccountLiabilityGrp>
      <LoansFromOfficersDirectorsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LoansFromOfficersDirectorsGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>4452493</BOYAmt>
        <EOYAmt>4001079</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <UnsecuredNotesLoansPayableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </UnsecuredNotesLoansPayableGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>21472</BOYAmt>
        <EOYAmt>42534</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>4636420</BOYAmt>
        <EOYAmt>4193595</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>5656387</BOYAmt>
        <EOYAmt>5818937</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>5656387</BOYAmt>
        <EOYAmt>5818937</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>10292807</BOYAmt>
        <EOYAmt>10012532</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>221860</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>126115</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>-185425</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>false</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
      <ArtPublicExhibitionAmountsGrp />
      <HeldWorksArtGrp />
      <CYMinus3YrEndwmtFundGrp />
      <CYMinus4YrEndwmtFundGrp />
      <LandGrp>
        <OtherCostOrOtherBasisAmt>2635798</OtherCostOrOtherBasisAmt>
        <BookValueAmt>2635798</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>5601071</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>3360644</DepreciationAmt>
        <BookValueAmt>2240427</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp />
      <EquipmentGrp />
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>5948094</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>3388041</DepreciationAmt>
        <BookValueAmt>2560053</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>7436278</TotalBookValueLandBuildingsAmt>
      <FederalIncomeTaxLiabilityAmt>0</FederalIncomeTaxLiabilityAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>TENANT DEPOSITS</Desc>
        <Amt>21472</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>ADVANCES FROM NATCA</Desc>
        <Amt>21062</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>42534</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2 - FIN 48 FOOTNOTE:</FormAndLineReferenceDesc>
        <ExplanationTxt>Accounting principles generally accepted in the United States of America require management to evaluate income tax positions taken and accrue an income tax liability if the Association has taken an uncertain position that more likely than not would not be sustained upon examination by the Internal Revenue Service. Management has evaluated the income tax positions taken and concluded that as of December 31, 2023 there are no uncertain positions taken or expected to be taken that would require recognition in the consolidated financial statements. NATCA, NMI and the NATCA PAC are subject to routine audits by taxing jurisdictions; however, there are currently no audits in progress for any tax periods. In addition, there have been no tax related interest or penalties for the periods presented in these consolidated financial statements.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PREET VIRK</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>189150</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>4077</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>45396</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>47660</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>286283</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARGUERITE GRAF</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>229496</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>4077</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>55079</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>47752</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>336404</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3 - METHOD FOR ESTABLISHING COMPENSATION:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TOP MANAGEMENT OFFICIAL IS UNCOMPENSATED BY THE REPORTING ORGANIZATION. THE REPORTING ORGANIZATION RELIES ON A RELATED ORGANIZATION (NATCA) TO ESTABLISH THE COMPENSATION FOR THE TOP MANAGEMENT OFFICIAL.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION A, LINE 7A - ELECTION OF MEMBERS TO THE GOVERNING BODY:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE BOARD OF THE PARENT ORGANIZATION ELECTS THE DIRECTORS OF THE ORGANIZATION WHO ARE THE PRIMARY GOVERNING BODY OF THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION A, LINE 7B - GOVERNANCE DECISIONS:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BYLAWS AND CONSTITUTION CHANGES REQUIRE APPROVAL BY THE PARENT ORGANIZATION IN ORDER TO PURCHASE OR SELL REAL PROPERTY. OTHER SIGNIFICANT TRANSACTIONS ARE TO BE SUBMITTED TO THE PARENT ORGANIZATION FOR APPROVAL OR RATIFICATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION A, LINE 8B - OTHER COMMITTEES OF THE ORGANIZATION:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION DOES NOT MAINTAIN ANY COMMITTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B, LINE 11B - REVIEW PROCESS OF FORM 990:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS PREPARED BY AN INDEPENDENT CERTIFIED PUBLIC ACCOUNTING FIRM, ENGAGED BY THE GOVERNING BODY, IN WHICH A DRAFT COPY OF THE FORM 990 IS MADE AVAILABLE TO THE MEMBERS OF THE GOVERNING BODY FOR THEIR REVIEW AS TO THE ACCURACY AND COMPLETENESS OF THE RETURN PRIOR TO ITS FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION C, LINE 19 - AVAILABILITY OF DOCUMENTS AND FINANCIALS:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 9 - OTHER CHANGES IN NET ASSETS OR FUND BALANCES</FormAndLineReferenceDesc>
        <ExplanationTxt>$ (191,280) BOOK-TO-TAX DIFFERENCE 5,855 DEFERRED RENT RECEIVABLE ------------ $ (185,425)</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NATIONAL AIR TRAFFIC CONTROLLERS ASSOC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1325 MASSACHUSETTS AVENUE NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
        </USAddress>
        <EIN>521522639</EIN>
        <PrimaryActivitiesTxt>LABOR UNION</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(5)</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>true</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
