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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a000d1-ec6f-7728-8f27-a14da30fa387,g:b07e58ce-9306-4ff9-bdb1-362dc8a125d7-->
<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-20260814.xsd#Cover"/>
  <link:definitionLink xlink:role="http://airt.net/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable_01a000d1-ec6f-79fd-841c-4ef2b8550d49" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntitiesTable_01a000d1-ec6f-79fd-841c-4ef2b8550d49" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a000d1-ec6f-74d1-b8b3-dd103a23dc84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_01a000d1-ec6f-79fd-841c-4ef2b8550d49" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a000d1-ec6f-74d1-b8b3-dd103a23dc84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a000d1-ec6f-74d1-b8b3-dd103a23dc84_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a000d1-ec6f-74d1-b8b3-dd103a23dc84" xlink:to="loc_us-gaap_ClassOfStockDomain_01a000d1-ec6f-74d1-b8b3-dd103a23dc84_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a000d1-ec6f-7447-8b0f-1f8c75ab2f1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a000d1-ec6f-74d1-b8b3-dd103a23dc84" xlink:to="loc_us-gaap_ClassOfStockDomain_01a000d1-ec6f-7447-8b0f-1f8c75ab2f1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a000d1-ec6f-778c-adc2-f110eba11c41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a000d1-ec6f-7447-8b0f-1f8c75ab2f1e" xlink:to="loc_us-gaap_CommonStockMember_01a000d1-ec6f-778c-adc2-f110eba11c41" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_airt_CumulativeCapitalSecuritiesMember_01a000d1-ec6f-7ee8-b795-fe3f099a4a16" xlink:href="airt-20260814.xsd#airt_CumulativeCapitalSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a000d1-ec6f-7447-8b0f-1f8c75ab2f1e" xlink:to="loc_airt_CumulativeCapitalSecuritiesMember_01a000d1-ec6f-7ee8-b795-fe3f099a4a16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a000d1-ec6f-72f8-977b-22b7a3609160" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_DocumentType_01a000d1-ec6f-72f8-977b-22b7a3609160" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a000d1-ec6f-7837-b09a-26d6714b83fe" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_DocumentPeriodEndDate_01a000d1-ec6f-7837-b09a-26d6714b83fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a000d1-ec6f-77e0-a65e-67693e29ef30" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityRegistrantName_01a000d1-ec6f-77e0-a65e-67693e29ef30" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a000d1-ec6f-788c-a7fc-053a4b287cee" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a000d1-ec6f-788c-a7fc-053a4b287cee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a000d1-ec6f-7e14-9889-f312e217613b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityFileNumber_01a000d1-ec6f-7e14-9889-f312e217613b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a000d1-ec6f-7b59-8298-9df88e19a269" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a000d1-ec6f-7b59-8298-9df88e19a269" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a000d1-ec6f-7a6a-a248-a5102d4a692b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityAddressAddressLine1_01a000d1-ec6f-7a6a-a248-a5102d4a692b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a000d1-ec6f-7715-bf22-2082712c33ec" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityAddressCityOrTown_01a000d1-ec6f-7715-bf22-2082712c33ec" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a000d1-ec6f-77c1-b168-794c4e6d9ebd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityAddressStateOrProvince_01a000d1-ec6f-77c1-b168-794c4e6d9ebd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a000d1-ec6f-7f2f-9074-78c5985988f3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityAddressPostalZipCode_01a000d1-ec6f-7f2f-9074-78c5985988f3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a000d1-ec6f-7038-98f8-65a5aa1c46d4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_CityAreaCode_01a000d1-ec6f-7038-98f8-65a5aa1c46d4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a000d1-ec6f-78b7-bde2-3446be1335a4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_LocalPhoneNumber_01a000d1-ec6f-78b7-bde2-3446be1335a4" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a000d1-ec6f-7044-b2c4-3f0502bfb34b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_Security12bTitle_01a000d1-ec6f-7044-b2c4-3f0502bfb34b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a000d1-ec6f-71fc-90b7-167426b3df4a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_TradingSymbol_01a000d1-ec6f-71fc-90b7-167426b3df4a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a000d1-ec6f-7971-a313-ed18f3636263" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_SecurityExchangeName_01a000d1-ec6f-7971-a313-ed18f3636263" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a000d1-ec6f-76aa-8f57-3a48bf6a0e0d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_WrittenCommunications_01a000d1-ec6f-76aa-8f57-3a48bf6a0e0d" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a000d1-ec6f-7237-9301-0e95f8972050" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_PreCommencementTenderOffer_01a000d1-ec6f-7237-9301-0e95f8972050" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a000d1-ec6f-7ccf-bfbd-4c6a0305315c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a000d1-ec6f-7ccf-bfbd-4c6a0305315c" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a000d1-ec6f-738d-be0a-7281f45a1fb7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a000d1-ec6f-738d-be0a-7281f45a1fb7" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a000d1-ec6f-7886-9816-d59dfc0df18d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_EntityCentralIndexKey_01a000d1-ec6f-7886-9816-d59dfc0df18d" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a000d1-ec6f-7bee-b8a7-456f33f19b25" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_AmendmentFlag_01a000d1-ec6f-7bee-b8a7-456f33f19b25" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentEffectiveDate_01a000d1-ec6f-7c82-8748-ceea180e62b6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentEffectiveDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_DocumentEffectiveDate_01a000d1-ec6f-7c82-8748-ceea180e62b6" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a000d1-ec6f-7af6-af02-0b41ce0b1714" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_01a000d1-ec6f-7a50-acfd-09ba6634590c" xlink:to="loc_dei_SolicitingMaterial_01a000d1-ec6f-7af6-af02-0b41ce0b1714" xlink:type="arc" order="22"/>
  </link:definitionLink>
</link:linkbase>
