Deutsche Bank AG
Taunusanlage 12, D-60325
Frankfurt am Main
Federal Republic of Germany



Jeffrey A. Ruiz
Vice President
Telephone: (212) 250-3667


                                                  February 6, 2004


Securities and Exchange Commission
SEC Document Control
450 Fifth Street, N.W.
Washington, DC  20549
Attn:  Filing Desk


Dear Sir or Madame:

         Re:  Filing of Schedule 13G - MESA AIR GROUP INC


Pursuant to Rule 13d-1 of the Securities Exchange Act of 1934, attached is one
copy of Schedule 13G with respect to the common stock of the above referenced
corporation.

Please acknowledge your receipt of the Schedule 13G by return e-mail
confirmation.


                                                               Sincerely,



                                                               Jeffrey A. Ruiz





Enclosures




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

                                  SCHEDULE 13G
                   Under the Securities Exchange Act of 1934

                                (Amendment No. )

                               MESA AIR GROUP INC
                    ---------------------------------------
                                NAME OF ISSUER:


                        Common Stock (Par Value $ 0.001)
                    ---------------------------------------
                          TITLE OF CLASS OF SECURITIES


                                   590479101
                    ---------------------------------------
                                  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)




1. NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Deutsche Bank AG*

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (A)     [ ]
         (B)     [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

         Federal Republic of Germany


NUMBER OF         5.       SOLE VOTING POWER
SHARES                     3,448,470
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  3,448,470
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                                        0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         3,448,470

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
             [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         9.81%

12. TYPE OF REPORTING PERSON

         HC, CO, BK

   * In accordance with Securities Exchange Act Release No. 39538 (January 12,
   1998), this filing reflects the securities beneficially owned by the
   Corporate and Investment Banking business group and the Corporate
   Investments business group (collectively, "CIB") of Deutsche Bank AG and
   its subsidiaries and affiliates (collectively, "DBAG"). This filing does
   not reflect securities, if any, beneficially owned by any other business
   group of DBAG. Consistent with Rule 13d-4 under the Securities Exchange Act
   of 1934 ("Act"), this filing shall not be construed as an admission that
   CIB is, for purposes of Section 13(d) under the Act, the beneficial owner
   of any securities covered by the filing. Furthermore, CIB disclaims
   beneficial ownership of the securities beneficially owned by (i) any client
   accounts with respect to which CIB or its employees have voting or
   investment discretion, or both, and (ii) certain investment entities, of
   which CIB is the general partner, managing general partner, or other
   manager, to the extent interests in such entities are held by persons other
   than CIB.

**Under the terms of a no-action letter issued by the SEC staff to Deutsche Bank
 AG on February 14, 2002, Deutsche Bank AG may report beneficial ownership for
 certain non-US subsidiaries on Schedule 13G pursuant to Rule 13d-1(b). The
 reporting person symbols provided in the Instructions to Schedule 13G have been
 used herein (see Question 12, "Type of Reporting Person") to classify the non-
 US subsidiaries eligible for 13G reporting under the SEC's no-action letter.
 In addition, the eligible non-US subsidiaries have been categorized herein
 (see Item 3) consistent with the business generally conducted by each such
 subsidiary.




1. NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Deutsche Bank AG , London Branch

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (A)     [ ]
         (B)     [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

         Federal Republic of Germany


NUMBER OF         5.       SOLE VOTING POWER
SHARES                     3,422,570*
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  3,422,570*
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         3,422,570*

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
    SHARES [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         9.74%

12. TYPE OF REPORTING PERSON

         CO, BK



*Included in this amount are 3,219 shares held in a discretionary account,
managed by DB Advisors, L.L.C.





1. NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         DB Advisors, L.L.C

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (A)     [ ]
         (B)     [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware


NUMBER OF         5.       SOLE VOTING POWER
SHARES                     3,219
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  3,219
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         3,219

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
    SHARES [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0.01%

12. TYPE OF REPORTING PERSON

         IA, CO








1. NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

         Deutsche Bank Securities Inc.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (A)     [ ]
         (B)     [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

NUMBER OF         5.       SOLE VOTING POWER
SHARES                     25,900
BENEFICIALLY      6.       SHARED VOTING POWER
OWNED BY                   0
EACH              7.       SOLE DISPOSITIVE POWER
REPORTING                  25,900
PERSON WITH       8.       SHARED DISPOSITIVE POWER
                           0

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         25,900

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
       [ ]

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          .07%

12. TYPE OF REPORTING PERSON

         BD,CO








Item 1(a).        Name of Issuer:

                  MESA AIR GROUP INC ("Issuer")

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

                   410 North 44th Street, Suite 700 Phoenix, AZ 85008 USA

Item 2(a).        Name of Person Filing:

                  This statement is filed on behalf of Deutsche Bank AG
                  ("Reporting Person").

Item 2(b).        Address of Principal Business Office or, if none, Residence:

                  The principal place of business of the Reporting Person is:
                           Taunusanlage 12
                           D-60325 Frankfurt am Main
                           Federal Republic of Germany

Item 2(c).        Citizenship:

                  The citizenship of the Reporting Person is set forth on the
                  cover page.

Item 2(d).        Title of Class of Securities:

                  The title of the securities is common stock, $0.001 par value
                  ("Common Stock").

Item 2(e).        CUSIP Number:

                  The CUSIP number of the Common Stock is set forth on the cover
                  page.

Item 3.          If this statement is filed pursuant to Rules 13d-1(b), or
                 13d-2(b) or (c), check whether the person filing is a:

                 (a) [ X ] Broker or dealer registered under section 15 of the
                           Act;

                            Deutsche Bank Securities Inc.

                 (b) [ X ] Bank as defined in section 3(a)(6) of the Act;

                             Deutsche Bank AG, London Branch

                 (c  [   ] Insurance Company as defined in section 3(a)(19)
                           of the Act;

                 (d) [   ] Investment Company registered under section 8
                           of the Investment Company Act of 1940;

                 (e) [ X ] An investment adviser in accordance with Rule
                           13d-1(b)(1)(ii)(E);

                             DB Advisors, L.L.C.

                 (f) [   ] An employee benefit plan, or endowment fund in
                           accordance with Rule 13d-1 (b)(1)(ii)(F);

                 (g) [ X ] parent holding company or control person in
                           accordance with Rule 13d-1 (b)(1)(ii)(G);

                             Deutsche Bank AG

                 (h) [   ] A savings association as defined in section
                           3(b) of the Federal Deposit Insurance Act;

                 (i) [   ] A church plan that is excluded from the
                           definition of an investment company under section
                           3(c)(14) of the Investment Company Act of 1940;

                 (j) [   ] Group, in accordance with Rule 13d-1
                           (b)(1)(ii)(J).


Item 4.           Ownership.

                  (a) Amount beneficially owned:

                  The Reporting Person owns the amount of the Common Stock as
                  set forth on the cover page.

                  (b) Percent of class:

                  The Reporting Person owns the percentage of the Common Stock
                  as set forth on the cover page.

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

                           (i) sole power to vote or to direct the vote:

                           The Reporting Person has the sole power to vote or
                           direct the vote of the Common Stock as set forth on
                           the cover page.

                           (ii) shared power to vote or to direct the vote:

                           The Reporting Person has the shared power to vote or
                           direct the vote of the Common Stock as set forth on
                           the cover page.

                           (iii)   sole power to dispose or to direct the
                                   disposition of:

                           The Reporting Person has the sole power to dispose or
                           direct the disposition of the Common Stock as set
                           forth on the cover page.

                           (iv)   shared power to dispose or to direct the
                                  disposition of:

                           The Reporting Person has the shared power to dispose
                           or direct the disposition of the Common Stock as set
                           forth on the cover page.

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.

                                 Not applicable.

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

                  Subsidiary                       Item 3 Classification
                  -----------------------------------------------------------

                  Deutsche Bank AG, London Branch      Bank
                  DB Advisors, L.L.C                   Investment Advisor
                  Deutsche Bank Securities Inc.        Broker /Dealer


Item 8.          Identification and Classification of Members of the Group.

                                 Not applicable.

Item 9.           Notice of Dissolution of Group.

                                 Not applicable.

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.








                                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.


         Dated:  February 6, 2004






                                      Deutsche Bank AG

                                      By:  /s/ Jeffrey A. Ruiz
                                      Name:    Jeffrey A. Ruiz
                                      Title:   Vice President

                                       By:  /s/ Pasquale Antolino
                                       Name:    Pasquale Antolino
                                       Title:   Associate







                                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.


         Dated:  February 6, 2004






                                            Deutsche Bank AG, London Branch

                                            By:  /s/ Jeffrey A. Ruiz
                                            Name:    Jeffrey A. Ruiz
                                            Title:   Vice President






                                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.


         Dated:  February 6, 2004






                                                     DB Advisors L.L.C.

                                                     By:  /s/ Jeffrey A. Ruiz
                                                     Name:    Jeffrey A. Ruiz
                                                     Title:   Vice President








                                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.


         Dated:  February 6, 2004






                           Deutsche Bank Securities Inc.

                           By: /s/ James T. Byrne Jr.
                           Name: James T. Byrne Jr.
                           Title: Secretary