<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f1102-df41-7e67-997c-b11c54c6eb39,g:39cda7c2-f724-4b40-8390-50611ea6dc0d-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://airt.net/role/Cover" xlink:type="simple" xlink:href="airt-20260629.xsd#Cover"/>
  <link:definitionLink xlink:role="http://airt.net/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable_019f1102-df41-72f4-932a-88651c98694a" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntitiesTable_019f1102-df41-72f4-932a-88651c98694a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019f1102-df41-743a-af2d-0ccc0f1221f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_019f1102-df41-72f4-932a-88651c98694a" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019f1102-df41-743a-af2d-0ccc0f1221f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019f1102-df41-743a-af2d-0ccc0f1221f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019f1102-df41-743a-af2d-0ccc0f1221f0" xlink:to="loc_us-gaap_ClassOfStockDomain_019f1102-df41-743a-af2d-0ccc0f1221f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019f1102-df41-76cc-955a-5f03e8aa5595" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019f1102-df41-743a-af2d-0ccc0f1221f0" xlink:to="loc_us-gaap_ClassOfStockDomain_019f1102-df41-76cc-955a-5f03e8aa5595" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019f1102-df41-76ad-923a-4619ac995a28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019f1102-df41-76cc-955a-5f03e8aa5595" xlink:to="loc_us-gaap_CommonStockMember_019f1102-df41-76ad-923a-4619ac995a28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_airt_CumulativeCapitalSecuritiesMember_019f1102-df41-78fb-a8a8-3901b0095d47" xlink:href="airt-20260629.xsd#airt_CumulativeCapitalSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019f1102-df41-76cc-955a-5f03e8aa5595" xlink:to="loc_airt_CumulativeCapitalSecuritiesMember_019f1102-df41-78fb-a8a8-3901b0095d47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019f1102-df41-7dd1-abb4-415044a9cc67" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_DocumentType_019f1102-df41-7dd1-abb4-415044a9cc67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019f1102-df42-78fc-9035-58499cb5aab0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_DocumentPeriodEndDate_019f1102-df42-78fc-9035-58499cb5aab0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019f1102-df42-7a24-bb23-f574b142f32a" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityRegistrantName_019f1102-df42-7a24-bb23-f574b142f32a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019f1102-df42-73d5-9dee-71046bdf6114" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019f1102-df42-73d5-9dee-71046bdf6114" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019f1102-df42-7b49-a89d-cc5f696a9b6d" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityFileNumber_019f1102-df42-7b49-a89d-cc5f696a9b6d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019f1102-df42-70d6-8e5f-81312e4242ff" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityTaxIdentificationNumber_019f1102-df42-70d6-8e5f-81312e4242ff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019f1102-df42-7f56-991f-ed4e9c037877" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityAddressAddressLine1_019f1102-df42-7f56-991f-ed4e9c037877" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019f1102-df42-7d58-a2bb-06e03c701b93" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityAddressCityOrTown_019f1102-df42-7d58-a2bb-06e03c701b93" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019f1102-df42-7aca-8ff2-148215f36c24" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityAddressStateOrProvince_019f1102-df42-7aca-8ff2-148215f36c24" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019f1102-df42-7aaf-aa40-5e6eef2ff550" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityAddressPostalZipCode_019f1102-df42-7aaf-aa40-5e6eef2ff550" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019f1102-df42-7e46-822b-1c688a9e556c" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_CityAreaCode_019f1102-df42-7e46-822b-1c688a9e556c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019f1102-df42-7971-b394-c23eacd033f9" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_LocalPhoneNumber_019f1102-df42-7971-b394-c23eacd033f9" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019f1102-df42-731b-9c8c-b912f4ad823b" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_Security12bTitle_019f1102-df42-731b-9c8c-b912f4ad823b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019f1102-df42-7138-b07f-45f2472280f8" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_TradingSymbol_019f1102-df42-7138-b07f-45f2472280f8" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019f1102-df42-7dc7-ab84-660887e8170f" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_SecurityExchangeName_019f1102-df42-7dc7-ab84-660887e8170f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019f1102-df42-7235-9c11-c957db41696e" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_WrittenCommunications_019f1102-df42-7235-9c11-c957db41696e" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019f1102-df42-793b-b2f5-79ab556b1ce3" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_PreCommencementTenderOffer_019f1102-df42-793b-b2f5-79ab556b1ce3" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019f1102-df42-7dfd-a270-e5746172c67e" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019f1102-df42-7dfd-a270-e5746172c67e" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019f1102-df42-7bf2-88ef-ef9105965f55" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityEmergingGrowthCompany_019f1102-df42-7bf2-88ef-ef9105965f55" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019f1102-df42-7469-b522-9e57fb99027d" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_EntityCentralIndexKey_019f1102-df42-7469-b522-9e57fb99027d" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019f1102-df42-7788-8e1e-47e8019392c9" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_AmendmentFlag_019f1102-df42-7788-8e1e-47e8019392c9" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentEffectiveDate_019f1102-df42-7135-b5c8-8fccd5b111a6" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentEffectiveDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_DocumentEffectiveDate_019f1102-df42-7135-b5c8-8fccd5b111a6" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019f1102-df42-787c-a4bf-d8a60c70ce19" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_019f1102-df41-7aa4-bcb1-c40b05dee4aa" xlink:to="loc_dei_SolicitingMaterial_019f1102-df42-787c-a4bf-d8a60c70ce19" xlink:type="arc" order="22"/>
  </link:definitionLink>
</link:linkbase>
