﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2018v3.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2020-06-15T16:20:28-05:00</ReturnTs>
    <TaxPeriodEndDt>2019-09-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>521446779</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>JOHNSON LAMBERT LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>4242 SIX FORKS ROAD SUITE 1500</AddressLine1Txt>
        <CityNm>RALEIGH</CityNm>
        <StateAbbreviationCd>NC</StateAbbreviationCd>
        <ZIPCd>27609</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2018-10-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>131677290</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>AMERICAN INSTITUTE OF AERONAUTICS AND</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>ASTRONAUTICS</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>AMER</BusinessNameControlTxt>
      <PhoneNum>8006392422</PhoneNum>
      <USAddress>
        <AddressLine1Txt>12700 SUNRISE VALLEY DR NO 200</AddressLine1Txt>
        <CityNm>RESTON</CityNm>
        <StateAbbreviationCd>VA</StateAbbreviationCd>
        <ZIPCd>201915807</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>KAREN ROSENBLUM</PersonNm>
      <PersonTitleTxt>CHIEF FINANCIAL OFFICER</PersonTitleTxt>
      <PhoneNum>8006392422</PhoneNum>
      <SignatureDt>2020-06-15</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>J CALVIN MARKS</PreparerPersonNm>
      <PTIN>P01226973</PTIN>
      <PhoneNum>9197196400</PhoneNum>
    </PreparerPersonGrp>
    <FilingSecurityInformation>
      <IPAddress>
        <IPv4AddressTxt>34.233.173.235</IPv4AddressTxt>
      </IPAddress>
      <IPDt>2020-06-15</IPDt>
      <IPTm>16:20:23</IPTm>
      <IPTimezoneCd>ED</IPTimezoneCd>
      <FilingLicenseTypeCd>P</FilingLicenseTypeCd>
      <AtSubmissionCreationDeviceId>DA39A3EE5E6B4B0D3255BFEF95601890AFD80709</AtSubmissionCreationDeviceId>
      <AtSubmissionFilingDeviceId>5CA57564C3F4EED809CA878CC7A574EC5BA228EA</AtSubmissionFilingDeviceId>
    </FilingSecurityInformation>
    <TaxYr>2018</TaxYr>
    <BuildTS>2020-09-23 17:36:50Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="8">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <PrincipalOfficerNm>DANIEL L DUMBACHER</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>12700 SUNRISE VALLEY DR NO 200</AddressLine1Txt>
        <CityNm>RESTON</CityNm>
        <StateAbbreviationCd>VA</StateAbbreviationCd>
        <ZIPCd>201915807</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>25231880</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <GroupExemptionNum>1270</GroupExemptionNum>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.AIAA.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1963</FormationYr>
      <LegalDomicileStateCd>NY</LegalDomicileStateCd>
      <ActivityOrMissionDesc>THE PURPOSE OF THE INSTITUTE IS TO ADVANCE THE ARTS, SCIENCES, AND TECHNOLOGY OF AERONAUTICS AND ASTRONAUTICS AND TO NURTURE AND PROMOTE THE PROFESSIONALISM OF THOSE ENGAGED IN THESE PURSUITS.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>12</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>12</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>75</TotalEmployeeCnt>
      <TotalVolunteersCnt>3700</TotalVolunteersCnt>
      <TotalGrossUBIAmt>171970</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>-1500</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>88680</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>47582</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>19301164</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>19633612</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>1399563</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>2443005</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>172742</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>176480</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>20962149</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>22300679</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>9500</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>11700</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>8717236</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>8654731</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>13104618</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>14160374</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>21831354</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>22826805</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>-869205</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-526126</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>43966976</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>45957471</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>11200560</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>15334528</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>32766416</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>30622943</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>TO ADVANCE THE ARTS, SCIENCES, AND TECHNOLOGY OF AERONAUTICS AND ASTRONAUTICS AND TO NURTURE AND PROMOTE THE PROFESSIONALISM OF THOSE ENGAGED IN THESE PURSUITS. THE INSTITUTE SHALL ENCOURAGE ORIGINAL RESEARCH, FOSTER DISSEMINATION OF NEW KNOWLEDGE, FURTHER PROFESSIONAL DEVELOPMENT OF THOSE ENGAGED IN SCIENTIFIC AND ENGINEERING ACTIVITIES, IMPROVE PUBLIC UNDERSTANDING OF THE PROFESSION AND ITS CONTRIBUTIONS, FOSTER EDUCATION IN ENGINEERING AND SCIENCE, PROMOTE COMMUNICATION AMONG ENGINEERS AND SCIENTISTS AND WITH OTHER PROFESSIONAL GROUPS, AND STIMULATE OUTSTANDING PROFESSIONAL ACCOMPLISHMENTS. IT SHALL ALSO SERVE THE NEEDS AND PROFESSIONAL INTEREST OF MEMBERS, BRING TO BEAR THE SCIENTIFIC AND TECHNICAL CAPABILITIES OF THE PROFESSION IN AREAS OF NATIONAL CONCERN WHERE IT IS EQUIPPED TO CONTRIBUTE, AND UNDERTAKE OTHER MEASURES APPROPRIATE TO ITS MISSION.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>9955737</ExpenseAmt>
      <RevenueAmt>6487121</RevenueAmt>
      <Desc>TECHNICAL ACTIVITIES (CONFERENCES): THE INSTITUTE CONDUCTS TECHNICAL CONFERENCES AND COURSES THAT PROVIDE A FORUM FOR MEMBERS FROM INDUSTRY, ACADEMIA, AND GOVERNMENT TO PRESENT AND EXCHANGE INFORMATION WITH THEIR PEERS IN THE AEROSPACE COMMUNITY.</Desc>
      <ProgSrvcAccomActy2Grp>
        <ExpenseAmt>4781241</ExpenseAmt>
        <RevenueAmt>3661898</RevenueAmt>
        <Desc>MEMBER SERVICES: INCLUDES CORPORATE AND PROFESSIONAL MEMBER FORUMS AND MEETINGS TO DISCUSS AEROSPACE TECHNICAL AND COMMUNITY ISSUES, SECTION ACTIVITIES, PROFESSIONAL HONORS AND AWARDS, AND AEROSPACE AMERICA MAGAZINE.</Desc>
      </ProgSrvcAccomActy2Grp>
      <ProgSrvcAccomActy3Grp>
        <ExpenseAmt>4359068</ExpenseAmt>
        <RevenueAmt>9632704</RevenueAmt>
        <Desc>TECHNICAL PUBLICATIONS: THE INSTITUTE PUBLISHES EIGHT PEER-REVIEWED SCHOLARLY SCIENTIFIC AND TECHNICAL JOURNALS IN THE AEROSPACE FIELD AND PRODUCES A SERIES OF TEXTBOOKS FOR STUDENTS IN THE AEROSPACE FIELD. A DATABASE OF SCIENTIFIC STUDIES IN THE AEROSPACE FIELD IS PRODUCED AND MAINTAINED BY THE INSTITUTE AS WELL.</Desc>
      </ProgSrvcAccomActy3Grp>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>2035365</ExpenseAmt>
        <GrantAmt>11700</GrantAmt>
        <RevenueAmt>18309</RevenueAmt>
        <Desc>OUTREACH.</Desc>
      </ProgSrvcAccomActyOtherGrp>
      <TotalOtherProgSrvcExpenseAmt>2035365</TotalOtherProgSrvcExpenseAmt>
      <TotalOtherProgSrvcGrantAmt>11700</TotalOtherProgSrvcGrantAmt>
      <TotalOtherProgSrvcRevenueAmt>18309</TotalOtherProgSrvcRevenueAmt>
      <TotalProgramServiceExpensesAmt>21131411</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>0</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd referenceDocumentId="RetDoc1039600001">0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd referenceDocumentId="RetDoc1039600001">1</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd referenceDocumentId="RetDoc1039600001">0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1039900001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1039900001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1039900001">1</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1039900001">0</CreditCounselingInd>
      <TempOrPermanentEndowmentsInd referenceDocumentId="RetDoc1039900001">0</TempOrPermanentEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1039900001">1</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1039900001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1039900001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1039900001">0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1039900001">1</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1039900001">1</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1039900001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1039900001">1</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd referenceDocumentId="RetDoc1041900001">0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd referenceDocumentId="RetDoc1041900001">1</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="RetDoc1042400001">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWithOfficerEntInd>0</BusinessRlnWithOfficerEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="RetDoc1043400001">0</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="RetDoc1043400001">1</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd referenceDocumentId="RetDoc1043400001">0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="RetDoc1043400001">0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>293</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>75</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>1</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>1</UnrelatedBusIncmOverLimitInd>
      <Form990TFiledInd>1</Form990TFiledInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>12</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>12</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>1</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>1</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>1</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>1</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>1</LocalChaptersInd>
      <PoliciesReferenceChaptersInd>1</PoliciesReferenceChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>1</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>1</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>VA</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>KAREN ROSENBLUM</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>8006392422</PhoneNum>
        <USAddress>
          <AddressLine1Txt>12700 SUNRISE VALLEY DR NO 200</AddressLine1Txt>
          <CityNm>RESTON</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>201915807</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN S LANGFORD</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BASIL HASSAN</PersonNm>
        <TitleTxt>PRESIDENT-ELECT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANNALISA WEIGEL</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARY L CUMMINGS</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN R DOWDLE</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LUISELLA GIULICCHI</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>R STEVEN JUSTICE</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KONSTANTINOS KONTIS</PersonNm>
        <TitleTxt>TRUSTEE (TO MAY '19)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES MASER</PersonNm>
        <TitleTxt>TRUSTEE (TO MAY '19)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GEORGE C NIELD</PersonNm>
        <TitleTxt>TRUSTEE (FROM MAY '19)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GP BUD PETERSON</PersonNm>
        <TitleTxt>TRUSTEE (FROM MAY '19)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES M RANKIN</PersonNm>
        <TitleTxt>TRUSTEE (TO MAY '19)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBIE I SAMANTA ROY</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID A THROCKMORTON</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES E VASATKA</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>WOODROW WHITLOW JR</PersonNm>
        <TitleTxt>TRUSTEE (TO MAY '19)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DANIEL L DUMBACHER</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR/SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>400513</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>25432</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KAREN ROSENBLUM</PersonNm>
        <TitleTxt>CHIEF FINANCIAL OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>199221</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55860</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANGELO IASIELLO</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>294884</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55903</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SUSAN B LUBERT</PersonNm>
        <TitleTxt>CHIEF HUMAN RESOURCES OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>197378</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>44201</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KAREN THOMAS</PersonNm>
        <TitleTxt>MNGING DIR, MEMBER &amp; COMM.</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>154764</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>43744</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RODGER WILLIAMS</PersonNm>
        <TitleTxt>MNGING DIR, STRATEGIC OUTREACH</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>151632</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>38951</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MERRIE SCOTT</PersonNm>
        <TitleTxt>DEVELOPMENT DIR, AIAA FOUNDATION</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>149977</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55542</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MEGAN SCHEIDT</PersonNm>
        <TitleTxt>MNGING DIR, PROD &amp; PROG (TO OCT '18)</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>134214</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>32117</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BENJAMIN IANNOTTA</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>125543</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>37850</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DANIEL CRAIG DAY</PersonNm>
        <TitleTxt>DIRECTOR, FORUM DEVELOPMENT</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>124590</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>20331</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ELIZABETH C SHERRILL</PersonNm>
        <TitleTxt>DIRECTOR, IT OPS AND PROJECT MGMT</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>123454</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>14865</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SANDRA MAGNUS</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR (TO MAR '18)</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>245607</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27296</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD C HEM</PersonNm>
        <TitleTxt>DIRECTOR, IT, (TO SEP '18)</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>162864</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>30900</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>THOMAS B IRVINE</PersonNm>
        <TitleTxt>MNGING DIR, CONTENT DEV (TO SEP '18)</TitleTxt>
        <AverageHoursPerWeekRt>37.50</AverageHoursPerWeekRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>151806</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>21968</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>2616447</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>504960</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>30</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>1</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>360 LIVE MEDIA</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1717 RHODE ISLAND AVE NW STE 640</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20036</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>MARKETING AGENCY</ServicesDesc>
        <CompensationAmt>1041033</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>GAYLORD PALMS RESORT &amp; CONV CENTER</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>6000 W OSCEOLA PKWY</AddressLine1Txt>
            <CityNm>KISSIMMEE</CityNm>
            <StateAbbreviationCd>FL</StateAbbreviationCd>
            <ZIPCd>34746</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONVENTION SERVICES</ServicesDesc>
        <CompensationAmt>1023289</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>HYATT REGENCY ATLANTA</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>265 PEACHTREE ST NW</AddressLine1Txt>
            <CityNm>ATLANTA</CityNm>
            <StateAbbreviationCd>GA</StateAbbreviationCd>
            <ZIPCd>30303</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONVENTION SERVICES</ServicesDesc>
        <CompensationAmt>563036</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>LUMENS AUDIO VISUALS</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>127 27TH ST STE A</AddressLine1Txt>
            <CityNm>NEWPORT BEACH</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>92663</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>AUDIO VISUAL SERVICES</ServicesDesc>
        <CompensationAmt>545976</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>HYATT REGENCY ORLANDO</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>9801 INTERNATIONAL DR</AddressLine1Txt>
            <CityNm>ORLANDO</CityNm>
            <StateAbbreviationCd>FL</StateAbbreviationCd>
            <ZIPCd>32819</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONVENTION SERVICES</ServicesDesc>
        <CompensationAmt>313259</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>15</CntrctRcvdGreaterThan100KCnt>
      <AllOtherContributionsAmt>47582</AllOtherContributionsAmt>
      <TotalContributionsAmt>47582</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATIONS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>9478703</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>9478703</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>CONFERENCES &amp; EDUCATION</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>5200553</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>5200553</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBER SERVICES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>3648695</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>3491325</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>157370</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>EXHIBITS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>663064</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>663064</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>SPONSORSHIPS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>566750</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>566750</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>75847</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>75847</RelatedOrExemptFuncIncomeAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>19633612</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1374206</TotalRevenueColumnAmt>
        <ExclusionAmt>1374206</ExclusionAmt>
      </InvestmentIncomeGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>149957</TotalRevenueColumnAmt>
        <ExclusionAmt>149957</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>4000000</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>2931201</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>1068799</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>1068799</TotalRevenueColumnAmt>
        <ExclusionAmt>1068799</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>BANNER ADS</Desc>
        <BusinessCd>541800</BusinessCd>
        <TotalRevenueColumnAmt>14600</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>14600</UnrelatedBusinessRevenueAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>LIST RENTAL</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>809</TotalRevenueColumnAmt>
        <ExclusionAmt>809</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>AFFINITY</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>54</TotalRevenueColumnAmt>
        <ExclusionAmt>54</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <MiscellaneousRevenueGrp>
        <TotalRevenueColumnAmt>11060</TotalRevenueColumnAmt>
        <ExclusionAmt>11060</ExclusionAmt>
      </MiscellaneousRevenueGrp>
      <OtherRevenueTotalAmt>26523</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>22300679</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>19476242</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>171970</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2604885</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>500</TotalAmt>
        <ProgramServicesAmt>500</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>9700</TotalAmt>
        <ProgramServicesAmt>9700</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>1500</TotalAmt>
        <ProgramServicesAmt>1500</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>1726343</TotalAmt>
        <ProgramServicesAmt>1490072</ProgramServicesAmt>
        <ManagementAndGeneralAmt>236271</ManagementAndGeneralAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>5479184</TotalAmt>
        <ProgramServicesAmt>4743767</ProgramServicesAmt>
        <ManagementAndGeneralAmt>735417</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>141174</TotalAmt>
        <ProgramServicesAmt>119905</ProgramServicesAmt>
        <ManagementAndGeneralAmt>21269</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>811425</TotalAmt>
        <ProgramServicesAmt>641258</ProgramServicesAmt>
        <ManagementAndGeneralAmt>170167</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>496605</TotalAmt>
        <ProgramServicesAmt>469713</ProgramServicesAmt>
        <ManagementAndGeneralAmt>26892</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>48539</TotalAmt>
        <ManagementAndGeneralAmt>48539</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>93505</TotalAmt>
        <ProgramServicesAmt>40861</ProgramServicesAmt>
        <ManagementAndGeneralAmt>52644</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>49522</TotalAmt>
        <ManagementAndGeneralAmt>49522</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>3173186</TotalAmt>
        <ProgramServicesAmt>3128326</ProgramServicesAmt>
        <ManagementAndGeneralAmt>44860</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>284028</TotalAmt>
        <ProgramServicesAmt>280853</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3175</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>803549</TotalAmt>
        <ProgramServicesAmt>776742</ProgramServicesAmt>
        <ManagementAndGeneralAmt>26807</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>1742923</TotalAmt>
        <ProgramServicesAmt>1640714</ProgramServicesAmt>
        <ManagementAndGeneralAmt>102209</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>142904</TotalAmt>
        <ProgramServicesAmt>142904</ProgramServicesAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>446015</TotalAmt>
        <ProgramServicesAmt>387745</ProgramServicesAmt>
        <ManagementAndGeneralAmt>58270</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>585365</TotalAmt>
        <ProgramServicesAmt>540232</ProgramServicesAmt>
        <ManagementAndGeneralAmt>45133</ManagementAndGeneralAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>3199768</TotalAmt>
        <ProgramServicesAmt>3192390</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7378</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>1688787</TotalAmt>
        <ProgramServicesAmt>1688787</ProgramServicesAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>282953</TotalAmt>
        <ProgramServicesAmt>241257</ProgramServicesAmt>
        <ManagementAndGeneralAmt>41696</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>80696</TotalAmt>
        <ProgramServicesAmt>78234</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2462</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>AWARDS &amp; HONORARIA</Desc>
        <TotalAmt>424989</TotalAmt>
        <ProgramServicesAmt>424989</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>JOURNALS &amp; PUBLICATIONS</Desc>
        <TotalAmt>286504</TotalAmt>
        <ProgramServicesAmt>286504</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>SECTION REBATE</Desc>
        <TotalAmt>208419</TotalAmt>
        <ProgramServicesAmt>208419</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>FULFILLMENT</Desc>
        <TotalAmt>175451</TotalAmt>
        <ProgramServicesAmt>163751</ProgramServicesAmt>
        <ManagementAndGeneralAmt>11700</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>443271</TotalAmt>
        <ProgramServicesAmt>432288</ProgramServicesAmt>
        <ManagementAndGeneralAmt>10983</ManagementAndGeneralAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>22826805</TotalAmt>
        <ProgramServicesAmt>21131411</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1695394</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>2482146</BOYAmt>
        <EOYAmt>5333419</EOYAmt>
      </CashNonInterestBearingGrp>
      <AccountsReceivableGrp>
        <BOYAmt>166080</BOYAmt>
        <EOYAmt>148752</EOYAmt>
      </AccountsReceivableGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>9306</BOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>1110937</BOYAmt>
        <EOYAmt>3167500</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>7222831</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>5780511</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>1132620</BOYAmt>
        <EOYAmt>1442320</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>37784824</BOYAmt>
        <EOYAmt>35735813</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>1281063</BOYAmt>
        <EOYAmt>129667</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>43966976</BOYAmt>
        <EOYAmt>45957471</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>4445952</BOYAmt>
        <EOYAmt>3603985</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>6719338</BOYAmt>
        <EOYAmt>11696217</EOYAmt>
      </DeferredRevenueGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>35270</BOYAmt>
        <EOYAmt>34326</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>11200560</BOYAmt>
        <EOYAmt>15334528</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>31198416</BOYAmt>
        <EOYAmt>30204943</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <PermanentlyRstrNetAssetsGrp>
        <BOYAmt>1568000</BOYAmt>
        <EOYAmt>418000</EOYAmt>
      </PermanentlyRstrNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>32766416</BOYAmt>
        <EOYAmt>30622943</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>43966976</BOYAmt>
        <EOYAmt>45957471</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>-526126</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-1394396</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>-222951</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>93172</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>40263</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>14938</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>88680</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>47582</CurrentTaxYearAmt>
        <TotalAmt>284635</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>20397643</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>19907387</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>19013510</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>19208443</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>19476242</CurrentTaxYearAmt>
        <TotalAmt>98003225</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>20490815</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>19947650</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>19028448</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>19297123</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>19523824</CurrentTaxYearAmt>
        <TotalAmt>98287860</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <TotalAmt>0</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>98287860</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>919577</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>898351</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>984030</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1116775</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1524163</CurrentTaxYearAmt>
        <TotalAmt>5442896</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>919577</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>898351</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>984030</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1116775</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1524163</CurrentTaxYearAmt>
        <TotalAmt>5442896</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <OtherIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>17594</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>13200</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>18513</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>20032</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>11923</CurrentTaxYearAmt>
        <TotalAmt>81262</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>21427986</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>20859201</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>20030991</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>20433930</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>21059910</CurrentTaxYearAmt>
        <TotalAmt>103812018</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.94680</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.95290</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.05240</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.04610</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleC documentId="RetDoc1039600001">
      <TotalGrassrootsLobbyingGrp>
        <FilingOrganizationsTotalAmt>3426</FilingOrganizationsTotalAmt>
      </TotalGrassrootsLobbyingGrp>
      <TotalDirectLobbyingGrp>
        <FilingOrganizationsTotalAmt>44170</FilingOrganizationsTotalAmt>
      </TotalDirectLobbyingGrp>
      <TotalLobbyingExpendGrp>
        <FilingOrganizationsTotalAmt>47596</FilingOrganizationsTotalAmt>
      </TotalLobbyingExpendGrp>
      <OtherExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>22710979</FilingOrganizationsTotalAmt>
      </OtherExemptPurposeExpendGrp>
      <TotalExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>22758575</FilingOrganizationsTotalAmt>
      </TotalExemptPurposeExpendGrp>
      <LobbyingNontaxableAmountGrp>
        <FilingOrganizationsTotalAmt>1000000</FilingOrganizationsTotalAmt>
      </LobbyingNontaxableAmountGrp>
      <GrassrootsNontaxableGrp>
        <FilingOrganizationsTotalAmt>250000</FilingOrganizationsTotalAmt>
      </GrassrootsNontaxableGrp>
      <TotLbbyngGrassrootMnsNonTxGrp>
        <FilingOrganizationsTotalAmt>0</FilingOrganizationsTotalAmt>
      </TotLbbyngGrassrootMnsNonTxGrp>
      <TotLbbyExpendMnsLbbyngNonTxGrp>
        <FilingOrganizationsTotalAmt>0</FilingOrganizationsTotalAmt>
      </TotLbbyExpendMnsLbbyngNonTxGrp>
      <AvgLobbyingNontaxableAmountGrp>
        <CurrentYearMinus3Amt>1000000</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>1000000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>1000000</CurrentYearMinus1Amt>
        <CurrentYearAmt>1000000</CurrentYearAmt>
        <TotalAmt>4000000</TotalAmt>
      </AvgLobbyingNontaxableAmountGrp>
      <LobbyingCeilingAmt>6000000</LobbyingCeilingAmt>
      <AvgTotalLobbyingExpendGrp>
        <CurrentYearMinus3Amt>81334</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>61466</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>67129</CurrentYearMinus1Amt>
        <CurrentYearAmt>47596</CurrentYearAmt>
        <TotalAmt>257525</TotalAmt>
      </AvgTotalLobbyingExpendGrp>
      <AvgGrassrootsNontaxableGrp>
        <CurrentYearMinus3Amt>250000</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>250000</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>250000</CurrentYearMinus1Amt>
        <CurrentYearAmt>250000</CurrentYearAmt>
        <TotalAmt>1000000</TotalAmt>
      </AvgGrassrootsNontaxableGrp>
      <GrassrootsCeilingAmt>1500000</GrassrootsCeilingAmt>
      <AvgGrassrootsLobbyingExpendGrp>
        <CurrentYearMinus3Amt>49394</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>16272</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>15145</CurrentYearMinus1Amt>
        <CurrentYearAmt>3426</CurrentYearAmt>
        <TotalAmt>84237</TotalAmt>
      </AvgGrassrootsLobbyingExpendGrp>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1039900001">
      <ArtPublicExhibitionAmountsGrp>
        <AssetsIncludedAmt>2</AssetsIncludedAmt>
      </ArtPublicExhibitionAmountsGrp>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>2335888</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1570715</DepreciationAmt>
        <BookValueAmt>765173</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>696158</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>692612</DepreciationAmt>
        <BookValueAmt>3546</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>4190785</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>3517184</DepreciationAmt>
        <BookValueAmt>673601</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>1442320</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>SUBLEASE DEPOSITS</Desc>
        <Amt>23820</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>CUSTOMER DEPOSITS</Desc>
        <Amt>6615</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>OTHER LIABILITIES</Desc>
        <Amt>3891</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>34326</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSTITUTE HOLDS AVIATION AND SPACE RELATED STAMP AND COIN COLLECTIONS. EACH OF THESE ITEMS IS CARRIED ON THE BALANCE SHEET AT $1.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ADDITIONALLY, MANAGEMENT HAS CONCLUDED THAT THERE ARE NO UNCERTAIN TAX POSITIONS THROUGH SEPTEMBER 30, 2019.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>PRIZES</GrantTypeTxt>
        <RecipientCnt>14</RecipientCnt>
        <CashGrantAmt>8200</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>GRANTS</GrantTypeTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AWARDEES ARE SELECTED BY COMMITTEE BASED ON MERIT. DOCUMENTATION IS REQUIRED BEFORE A GRANT IS MADE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <ClubDuesOrFeesInd>X</ClubDuesOrFeesInd>
      <WrittenPolicyRefTAndEExpnssInd>1</WrittenPolicyRefTAndEExpnssInd>
      <SubstantiationRequiredInd>1</SubstantiationRequiredInd>
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <IndependentConsultantInd>X</IndependentConsultantInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>1</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>1</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DANIEL L DUMBACHER</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR/SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>337967</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>60938</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1608</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24500</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>932</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>425945</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KAREN ROSENBLUM</PersonNm>
        <TitleTxt>CHIEF FINANCIAL OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>175965</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>21642</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1614</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24500</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31360</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>255081</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANGELO IASIELLO</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>265381</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>28261</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1242</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24500</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31403</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>350787</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SUSAN B LUBERT</PersonNm>
        <TitleTxt>CHIEF HUMAN RESOURCES OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>175129</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>19780</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2469</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>13854</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>30347</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>241579</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KAREN THOMAS</PersonNm>
        <TitleTxt>MNGING DIR, MEMBER &amp; COMM.</TitleTxt>
        <BaseCompensationFilingOrgAmt>142620</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>10894</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1250</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>12718</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31026</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>198508</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RODGER WILLIAMS</PersonNm>
        <TitleTxt>MNGING DIR, STRATEGIC OUTREACH</TitleTxt>
        <BaseCompensationFilingOrgAmt>140062</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>10901</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>669</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>7925</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31026</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>190583</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MERRIE SCOTT</PersonNm>
        <TitleTxt>DEVELOPMENT DIR, AIAA FOUNDATION</TitleTxt>
        <BaseCompensationFilingOrgAmt>149269</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>708</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24500</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31042</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>205519</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MEGAN SCHEIDT</PersonNm>
        <TitleTxt>MNGING DIR, PROD &amp; PROG (TO OCT '18)</TitleTxt>
        <BaseCompensationFilingOrgAmt>133703</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>511</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22784</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>9333</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>166331</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BENJAMIN IANNOTTA</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <BaseCompensationFilingOrgAmt>118326</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>6190</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1027</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6620</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>31230</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>163393</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SANDRA MAGNUS</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR (TO MAR '18)</TitleTxt>
        <BaseCompensationFilingOrgAmt>103895</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>141473</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>239</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24500</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>2796</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>272903</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RICHARD C HEM</PersonNm>
        <TitleTxt>DIRECTOR, IT, (TO SEP '18)</TitleTxt>
        <BaseCompensationFilingOrgAmt>162307</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>557</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>4969</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>25931</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>193764</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>THOMAS B IRVINE</PersonNm>
        <TitleTxt>MNGING DIR, CONTENT DEV (TO SEP '18)</TitleTxt>
        <BaseCompensationFilingOrgAmt>137717</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>12291</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1798</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20856</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>1112</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>173774</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>HEALTH/SOCIAL CLUB DUES IS AVAILABLE TO ALL STAFF MEMBERS. DURING THE TAX YEAR, 75 INDIVIDUALS RECEIVED THIS BENEFIT. IT WAS TAXABLE TO ALL WHO RECEIVED IT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4A</FormAndLineReferenceDesc>
        <ExplanationTxt>RICHARD C. HEM RECEIVED SEVERANCE OF $43,924</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>AIAA HAS A MERIT BONUS SYSTEM THAT APPLIES TO ALL EMPLOYEES AND IS MONITORED BY THE COMPENSATION COMMITTEE OF INDEPENDENT BOARD MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSITITUTE'S BYLAWS WERE UPDATED AS FOLLOWS: THE METHOD FOR CALCULATING THE NUMBER OF FELLOWS PERMISSABLE WAS CHANGED. THE FINANCE COMMITTEE'S ROLE WAS CLARIFIED. THE COMPENSATION AND BENEFITS COMMITTEE WAS CREATED. THE COMPENSATION AND BENEFITS COMMITTEE WAS FORMERLY A SUB-COMMITTEE OF THE FINANCE COMMITTEE. A PROVISION FOR SHORTER TERMS FOR THE INTEGRATION AND OUTREACH GROUPS WAS INCLUDED, AND THE ENDING OF TERMS FOR BOARD OF TRUSTEES MEMBERS WAS CLARIFIED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>AIAA DOES HAVE MEMBERS. ITS MEMBERSHIP CLASSES INCLUDE HONORARY FELLOWS, FELLOWS, ASSOCIATE FELLOWS, SENIOR MEMBERS, MEMBERS, HONORARY MEMBERS, AND STUDENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>HONORARY FELLOWS, FELLOWS, ASSOCIATE FELLOWS, SENIOR MEMBERS, AND MEMBERS SHALL BE ELIGIBLE TO HOLD OFFICE AND TO VOTE. HONORARY MEMBERS SHALL BE ENTITLED TO VOTE BUT SHALL NOT BE ENTITLED TO BE AN OFFICER OR DIRECTOR. MEMBERS VOTE ANNUALLY TO ELECT MEMBERS OF THE BOARD OF DIRECTORS, AND WHEN NEEDED TO MAKE CHANGES TO THE INSTITUTE CONSTITUTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>CHANGES TO THE CONSTITUTION MUST BE RATIFIED BY THE MEMBERSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS PLACED ON A WEBSITE FOR THE BOARD OF DIRECTORS TO REVIEW. MANAGEMENT REVIEWS FORM 990 BY VALIDATING THE ANSWERS AND RECONCILING FINANCIAL INFORMATION TO THE AUDITED FINANCIAL STATEMENTS TO ENSURE ACCURACY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALLY, AIAA BOARD MEMBERS AND AIAA STAFF ARE REQUIRED TO SIGN A CONFLICT OF INTEREST POLICY ACKNOWLEDGEMENT AND DISCLOSURE STATEMENTS AND CERTIFY THAT THE REQUIREMENTS OF THIS POLICY HAVE BEEN MET.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD COMPENSATION COMMITTEE WILL ANNUALLY REVIEW AND RECOMMEND TO THE BOARD FOR APPROVAL THE SALARY ADJUSTMENT POOLS AND THE BONUS POOLS TO BE USED FOR STAFF COMPENSATION. THE COMPENSATION COMMITTEE CONSISTS OF INDEPENDENT BOARD MEMBERS, RELYING ON OUTSIDE KNOWLEDGEABLE CONSULTANTS, ARMED WITH RECENT AND RELEVANT SALARY SURVEYS, AND RECOMMENDS COMPENSATION TO THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS ARE AVAILABLE ON AIAA'S WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTANTS: PROGRAM SERVICE EXPENSES 1,883,439. MANAGEMENT AND GENERAL EXPENSES 44,634. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 1,928,073. OUTSIDE PRODUCTION: PROGRAM SERVICE EXPENSES 681,251. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 681,251. OTHER PROFESSIONAL FEES: PROGRAM SERVICE EXPENSES 404,937. MANAGEMENT AND GENERAL EXPENSES 226. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 405,163. EDITORS: PROGRAM SERVICE EXPENSES 158,699. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 158,699.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>CONTRIBUTIONS AND CHANGE IN FAIR VALUE OF BENEFICIAL INTEREST IN TRUSTS -222,951.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>AIAA FOUNDATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>12700 SUNRISE VALLEY DR STE 200</AddressLine1Txt>
          <CityNm>RESTON</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>20191</ZIPCd>
        </USAddress>
        <EIN>541827596</EIN>
        <PrimaryActivitiesTxt>EDUCATION</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>VA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>11A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>AIAA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>1</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>