UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 1)*

                             Forward Air Corporation
--------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    349853101
                  ---------------------------------------------
                                 (CUSIP Number)

                                December 31, 2003
              -----------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

     Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

                                [x] Rule 13d-1(b)
                                [_] Rule 13d-1(c)
                                [_] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                                Page 1 of 9 Pages



CUSIP No. 349853101                    13G                     Page 2 of 9 Pages
          --------------

--------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Columbia Wanger Asset Management, L.P. 36-3820584
--------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

        Not Applicable                                                   (a) [_]

                                                                         (b) [_]
--------------------------------------------------------------------------------
  3     SEC USE ONLY

--------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware
--------------------------------------------------------------------------------
     NUMBER OF        5    SOLE VOTING POWER

       SHARES              None
                      ----------------------------------------------------------
    BENEFICIALLY      6    SHARED VOTING POWER

      OWNED BY             1,249,200
                      ----------------------------------------------------------
        EACH          7    SOLE DISPOSITIVE POWER

     REPORTING             None
                      ----------------------------------------------------------
    PERSON WITH       8    SHARED DISPOSITIVE POWER

                           1,249,200
--------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        1,249,200
--------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                                       [_]
--------------------------------------------------------------------------------
  11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        5.8 %
--------------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON*

        IA
--------------------------------------------------------------------------------



CUSIP No. 349853101                    13G                     Page 3 of 9 Pages
          --------------

--------------------------------------------------------------------------------
  1     NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        WAM Acquisition GP, Inc.
--------------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

        Not Applicable                                                   (a) [_]

                                                                         (b) [_]
--------------------------------------------------------------------------------
  3     SEC USE ONLY

--------------------------------------------------------------------------------
  4     CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware
--------------------------------------------------------------------------------
     NUMBER OF    5   SOLE VOTING POWER

       SHARES         None
                  --------------------------------------------------------------
    BENEFICIALLY  6   SHARED VOTING POWER

      OWNED BY        1,249,200
                  --------------------------------------------------------------
        EACH      7   SOLE DISPOSITIVE POWER

     REPORTING        None
                  --------------------------------------------------------------
    PERSON WITH   8   SHARED DISPOSITIVE POWER

                      1,249,200
--------------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        1,249,200
--------------------------------------------------------------------------------
  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                                       [_]
--------------------------------------------------------------------------------
  11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

        5.8 %
--------------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON*

        CO
--------------------------------------------------------------------------------



Item 1(a)     Name of Issuer:

                   Forward Air Corporation

Item 1(b)     Address of Issuer's Principal Executive Offices:

                   430 Airport Road
                   Greeneville, TN 37745

Item 2(a)     Name of Person Filing:

                   Columbia Wanger Asset Management, L.P. ("WAM")
                   WAM Acquisition GP, Inc., the general partner of WAM
                    ("WAM GP")

Item 2(b)     Address of Principal Business Office:

                   WAM and WAM GP are both located at:

                   227 West Monroe Street, Suite 3000
                   Chicago, Illinois 60606

Item 2(c)     Citizenship:

                   WAM is a Delaware limited partnership and WAM GP is a
                   Delaware corporation

Item 2(d)     Title of Class of Securities:

                   Common Stock

Item 2(e)     CUSIP Number:

                   349853101

Item 3        Type of Person:

                   (e) WAM is an Investment Adviser registered under section 203
                       of the Investment Advisers Act of 1940; WAM GP is the
                       General Partner of the Investment Adviser.

                               Page 4 of 9 Pages



Item 4        Ownership (at December 31, 2003):

                   (a) Amount owned "beneficially" within the meaning of rule
                       13d-3:

                       1,249,200

                   (b) Percent of class:

                       5.8 % (based on 21,439,190 shares outstanding as of
                       October 22, 2003).

                   (c) Number of shares as to which such person has:

                          (i)    sole power to vote or to direct the vote: none

                          (ii)   shared power to vote or to direct the vote:
                                 1,249,200

                          (iii)  sole power to dispose or to direct the
                                 disposition of: none

                          (iv)   shared power to dispose or to direct
                                 disposition of: 1,249,200

Item 5        Ownership of Five Percent or Less of a Class:

                   Not Applicable

Item 6        Ownership of More than Five Percent on Behalf of Another Person:

                   The shares reported herein have been acquired on behalf of
                   discretionary clients of WAM. Persons other than WAM and WAM
                   GP are entitled to receive all dividends from, and proceeds
                   from the sale of, those shares.

Item 7        Identification and Classification of the Subsidiary Which Acquired
              the Security Being Reported on by the Parent Holding Company:

                   Not Applicable

Item 8        Identification and Classification of Members of the Group:

                   Not Applicable

Item 9        Notice of Dissolution of Group:

                   Not Applicable

                               Page 5 of 9 Pages



Item 10       Certification:

                   By signing below I certify that, to the best of my knowledge
              and belief, the securities referred to above were acquired and are
              held in the ordinary course of business and were not acquired and
              are not held for the purpose of or with the effect of changing or
              influencing the control of the issuer of the securities and were
              not acquired and are not held in connection with or as a
              participant in any transaction having that purpose or effect.

                               Page 6 of 9 Pages



                                    Signature

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: February 10, 2004

               The undersigned corporation, on the date above written, agrees
               and consents to the joint filing on its behalf of this Schedule
               13G in connection with its beneficial ownership of the security
               reported herein.

                                       WAM Acquisition GP, Inc.
                                         for itself and as general partner of
                                         COLUMBIA WANGER ASSET MANAGEMENT, L.P.

                                       By: /s/ Bruce H. Lauer
                                           ------------------------------------
                                           Bruce H. Lauer
                                           Senior Vice President and Secretary

                                Page 7 of 9 Pages



                                  Exhibit Index

Exhibit 1    Joint Filing  Agreement dated as of February 10, 2004 by and
             between Columbia Wanger Asset Management, L.P. and WAM Acquisition
             GP, Inc.

                                Page 8 of 9 Pages



                                                                       EXHIBIT 1

                             JOINT FILING AGREEMENT

     The undersigned hereby agree to the joint filing of the Schedule 13G to
which this Agreement is attached.

                            Dated: February 10, 2004

                                       WAM Acquisition GP, Inc.
                                         for itself and as general partner of
                                         COLUMBIA WANGER ASSET MANAGEMENT, L.P.

                                       By: /s/ Bruce H. Lauer
                                           -------------------------------------
                                           Bruce H. Lauer
                                           Senior Vice President and Secretary

                               Pages 9 of 9 Pages