<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-11-07</periodOfReport>
    <issuer>
        <issuerCik>0000009779</issuerCik>
        <issuerName>FAIRCHILD CORP</issuerName>
        <issuerTradingSymbol>FA</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001205255</rptOwnerCik>
            <rptOwnerName>CAPLIN MORTIMER M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THE FAIRCHILD CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>45025 AVIATION DRIVE, SUITE 400</rptOwnerStreet2>
            <rptOwnerCity>DULLES</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>20166</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeHolding><securityTitle><value>Class A Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>120364</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>15.125</value></conversionOrExercisePrice><exerciseDate><value>1998-11-19</value></exerciseDate><expirationDate><value>2003-11-18</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>7.50</value></conversionOrExercisePrice><exerciseDate><value>1999-11-18</value></exerciseDate><expirationDate><value>2004-11-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>6.00</value></conversionOrExercisePrice><exerciseDate><value>2000-11-20</value></exerciseDate><expirationDate><value>2005-11-19</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>6.00</value></conversionOrExercisePrice><exerciseDate><value>2001-11-20</value><footnoteId id="F1"/></exerciseDate><expirationDate><value>2005-11-19</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>7500</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>7500</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>2.35</value></conversionOrExercisePrice><exerciseDate><value>2001-11-13</value></exerciseDate><expirationDate><value>2006-11-12</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>2.35</value></conversionOrExercisePrice><exerciseDate><value>2002-11-13</value><footnoteId id="F2"/></exerciseDate><expirationDate><value>2011-11-12</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>2000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-Employee Director Stock Option (Right to buy)</value></securityTitle><conversionOrExercisePrice><value>4.99</value></conversionOrExercisePrice><exerciseDate><value>2002-11-21</value></exerciseDate><expirationDate><value>2007-11-20</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeTransaction><securityTitle><value>Non-Employee Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>5.11</value></conversionOrExercisePrice><transactionDate><value>2003-11-07</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>1000</value></transactionShares><transactionPricePerShare><footnoteId id="F3"/></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-11-07</value></exerciseDate><expirationDate><value>2008-11-06</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Exercisable in 25% annual increments on 11/20/01; 11/20/02; 11/20/03; 11/20/04.</footnote><footnote id="F2">Exercisable in 25% annual increments on 11/13/02; 11/13/03; 11/13/04; 11/13/05.</footnote><footnote id="F3">N/A -- stock option grant.</footnote></footnotes><remarks/><ownerSignature><signatureName>Mortimer M. Caplin</signatureName><signatureDate>2003-11-07</signatureDate></ownerSignature></ownershipDocument>

