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  <xs:element id="dco_AccruedIncomeTaxesAndOtherCurrent" abstract="false" name="AccruedIncomeTaxesAndOtherCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="dco_GovernmentGrantExpense" abstract="false" name="GovernmentGrantExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dco_NewTermLoanMaturingDecember202024Member" abstract="true" name="NewTermLoanMaturingDecember202024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_StockOptionsAndRestrictedStockUnitsMember" abstract="true" name="StockOptionsAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_CreditFacilitiesMember" abstract="true" name="CreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_GoodwillAndOtherIntangibleAssets" abstract="false" name="GoodwillAndOtherIntangibleAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="dco_DebtInstrumentCovenant0OfExcessCashFlowAmountMember" abstract="true" name="DebtInstrumentCovenant0OfExcessCashFlowAmountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="dco_IncreaseDecreaseinProductionCostofContract" abstract="false" name="IncreaseDecreaseinProductionCostofContract" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="dco_DebtInstrumentPrepaymentAmountPercentageofPrincipalAmount" abstract="false" name="DebtInstrumentPrepaymentAmountPercentageofPrincipalAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dco_DebtInstrumentCovenant50OfExcessCashFlowAmountMember" abstract="true" name="DebtInstrumentCovenant50OfExcessCashFlowAmountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="dco_ElectronicSystemsMember" abstract="true" name="ElectronicSystemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_LocationOneMember" abstract="true" name="LocationOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_GuaymasMexicoMember" abstract="true" name="GuaymasMexicoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_DebtInstrumentQuarterlyPrepaymentYearThreeAndYearFourMember" abstract="true" name="DebtInstrumentQuarterlyPrepaymentYearThreeAndYearFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_MilitaryandSpaceMember" abstract="true" name="MilitaryandSpaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_New2018TermLoanMaturingNovember212025Member" abstract="true" name="New2018TermLoanMaturingNovember212025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_MagneticSealCorporationMember" abstract="true" name="MagneticSealCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_PropertyAndEquipmentImpairmentMember" abstract="true" name="PropertyAndEquipmentImpairmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_RightOfUseAssetAmortization" abstract="false" name="RightOfUseAssetAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dco_ProductionCostOfContractsCurrent" abstract="false" name="ProductionCostOfContractsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="dco_PaymentsFromIssuanceofStockUnderAwardPlansNet" abstract="false" name="PaymentsFromIssuanceofStockUnderAwardPlansNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dco_LocationTwoMember" abstract="true" name="LocationTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_RestructuringPlan2022Member" abstract="true" name="RestructuringPlan2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="dco_NewCreditFacilitiesMember" abstract="true" name="NewCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_LossContingencyNumberOfBuildingsAffected" abstract="false" name="LossContingencyNumberOfBuildingsAffected" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="dco_DebtInstrumentQuarterlyPrepaymentYearOneAndYearTwoMember" abstract="true" name="DebtInstrumentQuarterlyPrepaymentYearOneAndYearTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="dco_DebtInstrumentCovenantAdjustedLeverageRatioMinimum" abstract="false" name="DebtInstrumentCovenantAdjustedLeverageRatioMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dco_SignificantAccountingPoliciesLineItems" abstract="true" name="SignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dco_DebtInstrumentPercentageOfExcessCashFlowPaymentWhenLeverageRatioIsLessThanOrEqualTo325ButGreaterThan250" abstract="false" name="DebtInstrumentPercentageOfExcessCashFlowPaymentWhenLeverageRatioIsLessThanOrEqualTo325ButGreaterThan250" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="dco_WeightedAverageNumberOfShareOutstandingAbstract" abstract="true" name="WeightedAverageNumberOfShareOutstandingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
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  <xs:element id="dco_CommercialAerospaceMember" abstract="true" name="CommercialAerospaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_DebtInstrumentCovenant25OfExcessCashFlowAmountMember" abstract="true" name="DebtInstrumentCovenant25OfExcessCashFlowAmountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_InventoryWriteDownMember" abstract="true" name="InventoryWriteDownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_IndustrialMember" abstract="true" name="IndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_NumberofSubsidiariesThatAreNotGuarantorsonDebt" abstract="false" name="NumberofSubsidiariesThatAreNotGuarantorsonDebt" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dco_DebtInstrumentPercentageofExcessCashFlowPaymentWhenLeverageRatioisLessThanorEqualto2.50" abstract="false" name="DebtInstrumentPercentageofExcessCashFlowPaymentWhenLeverageRatioisLessThanorEqualto2.50" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dco_ProceedsReceivedFromGrants" abstract="false" name="ProceedsReceivedFromGrants" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dco_New2018RevolvingCreditFacilityMaturingNovember212023Member" abstract="true" name="New2018RevolvingCreditFacilityMaturingNovember212023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_SeniorSecuredTermLoanMember" abstract="true" name="SeniorSecuredTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dco_A2022TermLoanMaturingJuly142027Member" abstract="true" name="A2022TermLoanMaturingJuly142027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
