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  <xs:element id="fbk_SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferOrServicingAssetsOrLiabilitiesImpactOfTwoPercentAdverseChangeInDiscountRate" abstract="false" name="SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferOrServicingAssetsOrLiabilitiesImpactOfTwoPercentAdverseChangeInDiscountRate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate" abstract="false" name="ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee" abstract="false" name="ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_ExpirationOfStatuteOfLimitationsMember" abstract="true" name="ExpirationOfStatuteOfLimitationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_IncomeTaxReconciliationChangeInStateTaxCreditsNetOfFederalBenefit" abstract="false" name="IncomeTaxReconciliationChangeInStateTaxCreditsNetOfFederalBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMunicipalInterestIncomeNetOfInterestDisallowanceAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMunicipalInterestIncomeNetOfInterestDisallowanceAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_IncomeTaxReconciliationBankOwnedLifeInsurance" abstract="false" name="IncomeTaxReconciliationBankOwnedLifeInsurance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationExpirationOfStatuteOfLimitationsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationExpirationOfStatuteOfLimitationsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseInterestOnRefundsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseInterestOnRefundsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_IncomeTaxReconciliationChangeInStateTaxCreditsNetOfFederalBenefitPercentage" abstract="false" name="IncomeTaxReconciliationChangeInStateTaxCreditsNetOfFederalBenefitPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMunicipalInterestIncomeNetOfInterestDisallowancePercentage" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMunicipalInterestIncomeNetOfInterestDisallowancePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurancePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurancePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationExpirationOfStatuteOfLimitationsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationExpirationOfStatuteOfLimitationsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseInterestOnRefundsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseInterestOnRefundsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_CommitmentsUnderLetterOfCreditMember" abstract="true" name="CommitmentsUnderLetterOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_PrincipalAmountOfLoansRepurchasedOrIndemnifiedDuringPeriod" abstract="false" name="PrincipalAmountOfLoansRepurchasedOrIndemnifiedDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_AllowanceForLoanRepurchasesOrIndemnifications" abstract="false" name="AllowanceForLoanRepurchasesOrIndemnifications" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_UnfundedCommitmentsMember" abstract="true" name="UnfundedCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_CommitmentsandContingenciesRollForward" abstract="true" name="CommitmentsandContingenciesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fbk_FinancingReceivableChangeInAccountingEstimateExpectedCreditLosses" abstract="false" name="FinancingReceivableChangeInAccountingEstimateExpectedCreditLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_FinancingReceivableProvisionForCreditLosses" abstract="false" name="FinancingReceivableProvisionForCreditLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_FinancingReceivableCollateralDependentLoansRecordedInvestment" abstract="false" name="FinancingReceivableCollateralDependentLoansRecordedInvestment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_CollateralDependentLoansMeasurementInput" abstract="false" name="CollateralDependentLoansMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="fbk_LoansHeldForSaleAndDerivativesMember" abstract="true" name="LoansHeldForSaleAndDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_FinancingReceivableCollateralDependentLoansAmortizedCost" abstract="false" name="FinancingReceivableCollateralDependentLoansAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_LoansInsuredOrGuaranteedByGovernmentAuthoritiesOtherMember" abstract="true" name="LoansInsuredOrGuaranteedByGovernmentAuthoritiesOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_DepositsWithoutStatedMaturitiesFairValueDisclosure" abstract="false" name="DepositsWithoutStatedMaturitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_DepositsWithStatedMaturitiesFairValueDisclosure" abstract="false" name="DepositsWithStatedMaturitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_BankingSegmentMember" abstract="true" name="BankingSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_MortgageSegmentMember" abstract="true" name="MortgageSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_FeesAndCommissionsMortgageBankingBeforeAdjustments" abstract="false" name="FeesAndCommissionsMortgageBankingBeforeAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_MinimumCapitalAdequacyWithCapitalBuffer" abstract="false" name="MinimumCapitalAdequacyWithCapitalBuffer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_TierOneRiskBasedMinimumCapitalAdequacyWithCapitalBuffer" abstract="false" name="TierOneRiskBasedMinimumCapitalAdequacyWithCapitalBuffer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_TierOneRiskBasedMinimumCapitalAdequacyWithCapitalBufferToRiskWeightedAssets" abstract="false" name="TierOneRiskBasedMinimumCapitalAdequacyWithCapitalBufferToRiskWeightedAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="fbk_CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets" abstract="false" name="CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="fbk_CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets" abstract="false" name="CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="fbk_BankingRegulationCapitalConservationBufferTierOneRiskBasedCapitalActualAmount" abstract="false" name="BankingRegulationCapitalConservationBufferTierOneRiskBasedCapitalActualAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_LongTermIncentivePlan2016Member" abstract="true" name="LongTermIncentivePlan2016Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_ShareBasedPaymentArrangementTrancheFourMember" abstract="true" name="ShareBasedPaymentArrangementTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCostNotYetRecognizedPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCostNotYetRecognizedPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="fbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="fbk_CertainExecutiveOfficersCertainManagementAndDirectorsAndTheirAssociatesMember" abstract="true" name="CertainExecutiveOfficersCertainManagementAndDirectorsAndTheirAssociatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_FinancingReceivableBeforeAllowanceForCreditLossChangesInRelatedPartyStatus" abstract="false" name="FinancingReceivableBeforeAllowanceForCreditLossChangesInRelatedPartyStatus" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_FBKAviationLLCMember" abstract="true" name="FBKAviationLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_AviationTimeSharingAgreementMember" abstract="true" name="AviationTimeSharingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fbk_NumberOfBoardSeatsPrivatelyHeldEntity" abstract="false" name="NumberOfBoardSeatsPrivatelyHeldEntity" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="fbk_FinancingReceivableLoanPurchaseAgreementMaximumCapacity" abstract="false" name="FinancingReceivableLoanPurchaseAgreementMaximumCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fbk_FinancingReceivableLoanPurchaseAgreementTerm" abstract="false" name="FinancingReceivableLoanPurchaseAgreementTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
