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  <xs:element id="fcf_NonAccrualLoansMember" abstract="true" name="NonAccrualLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="fcf_ContractMaturityDomain" abstract="true" name="ContractMaturityDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="fcf_DerivativeInstrumentsDesignatedAsHedgingInstrumentsInterestIncome" abstract="false" name="DerivativeInstrumentsDesignatedAsHedgingInstrumentsInterestIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcf_InvestmentSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAccumulatedLoss" abstract="false" name="InvestmentSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAccumulatedLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcf_CreditValueAdjustmentRecordedRelatedToNotionalAmountOfDerivativesOutstandingTableTextBlock" abstract="false" name="CreditValueAdjustmentRecordedRelatedToNotionalAmountOfDerivativesOutstandingTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="fcf_RiskParticipationAgreementsPurchasedDomain" abstract="true" name="RiskParticipationAgreementsPurchasedDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="fcf_ReserveForOffBalanceSheetActivities" abstract="false" name="ReserveForOffBalanceSheetActivities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcf_MaturitiesAndImpairmentAbstract" abstract="true" name="MaturitiesAndImpairmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fcf_NonaccrualCommercialLoansMember" abstract="true" name="NonaccrualCommercialLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="fcf_UnusedCommitmentsDomain" abstract="true" name="UnusedCommitmentsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="fcf_NotionalAmountOfPerformanceStandbyLettersOfCredit" abstract="false" name="NotionalAmountOfPerformanceStandbyLettersOfCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcf_AccrualLoansMember" abstract="true" name="AccrualLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="fcf_InvestmentSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorLongerFairValue" abstract="false" name="InvestmentSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorLongerFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
