EXHIBIT 99.2


                                 AMENDMENT NO. 4
                                     to the
                           Airline Services Agreement
                                  By and Among
              Pinnacle Airlines Corp., Pinnacle Airlines, Inc. and
                            Northwest Airlines, Inc.


This Amendment No. 4 (the "Amendment") to the Airline Services Agreement by and
among Pinnacle Airlines Corp., Pinnacle Airlines, Inc. and Northwest Airlines,
Inc., dated January 14, 2003 and made effective as of January 1, 2003 (the
"ASA") is made and entered into as of December 13, 2004.

                                   WITNESSETH:

WHEREAS, Pinnacle Airlines Corp., Pinnacle Airlines, Inc. and Northwest
Airlines, Inc. desire to amend certain provisions of the ASA in the manner set
forth in this Amendment.

NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein, Pinnacle Airlines Corp., Pinnacle Airlines, Inc. and Northwest
Airlines, Inc. enter into this Amendment and agree as follows:

1.       The definition of "Aircraft" in Section 1.01 of the ASA is amended
         effective December 13, 2004 as follows:

         "AIRCRAFT" means, (i) the fifty-one (51) CRJ-200/440 Canadair Regional
         Jet aircraft in Pinnacle's fleet as of the Effective Date, (ii) the
         sixty-three (63) CRJ-200/440 Canadair Regional Jet aircraft that have
         been added to Pinnacle's fleet pursuant to Section 3.02 between the
         Effective Date and December 13, 2004; (iii) the twenty-five (25)
         additional CRJ-200 or CRJ-440 Canadair Regional Jet aircraft when and
         as such aircraft are added to Pinnacle's fleet pursuant to Section
         3.02; and (iv) up to one hundred sixty-five (165) additional
         CRJ-200/440 Canadair Regional Jet aircraft when, as and if such
         aircraft are added to Pinnacle's fleet pursuant to Section 3.02. Any
         Aircraft removed from Pinnacle's fleet cease to be "Aircraft" hereunder
         upon the date of such removal.

2.       Section 3.02(a) of the ASA is amended in its entirety effective
         December 13, 2004 to read as follows:



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         (a) Determination of Fleet Size. As of the Effective Date, Pinnacle's
         fleet consisted of fifty-one (51) CRJ-200/440 Canadair Regional Jet
         aircraft and four (4) Spare Engines, and as of December13, 2004,
         Pinnacle's fleet consisted of one hundred fourteen (114) CRJ-200/440
         Canadair Regional Jet aircraft and seven (7) Spare Engines.

                  (i)      Equipment Additions. Northwest and Pinnacle agree
                           that (A) subject to Bombardier (x) continuing to
                           provide or cause to be provided to Northwest
                           financing for the Equipment on a basis no less
                           favorable to Northwest than the terms of such
                           financing as in effect as of the Effective Date and
                           (y) delivering Canadair Regional Jet Aircraft to
                           Northwest as scheduled as of the Effective Date, (i)
                           an additional twenty-five (25) CRJ-200/440 Canadair
                           Regional Jet Aircraft and three (3) Spare Engines
                           shall be added to Pinnacle's fleet on or before July
                           31, 2005, provided that at Northwest's option one of
                           such Spare Engines may be added to Pinnacle's fleet
                           after December 31, 2005 and on or before June 30,
                           2006, and (B) Northwest shall have the right to cause
                           from time to time up to an additional one hundred
                           sixty-five (165) CRJ-200/440 Canadair Regional Jet
                           Aircraft and twenty-four (24) Spare Engines to be
                           added to Pinnacle's fleet.

                  (ii)     Equipment Removal Rights. Northwest and Pinnacle
                           agree that (A) Northwest shall have the right from
                           time to time to cause Pinnacle to assign the Saab
                           Leases to Northwest (or its designee) or to sublease
                           to Northwest (or its designee) any or all of the Saab
                           340 Aircraft; and (B) from and after that time when
                           Pinnacle has more than one hundred thirty-nine (139)
                           CRJ-200/440 Aircraft, Northwest shall have the right
                           upon at least ninety (90) days prior written notice
                           to require the removal of CRJ-200/440 Aircraft and
                           related Spare Engines selected by Northwest from
                           Pinnacle's fleet provided that at no time shall the
                           number of such Aircraft and Spare Engines removed
                           pursuant to this Section 3.02(a)(ii)(B) cause the
                           number of Aircraft in Pinnacle's fleet to be less
                           than one hundred thirty-nine (139) or cause the
                           number of Spare Engines in Pinnacle's fleet to be
                           less than ten (10).

                  (iii)    Additional Equipment Removal Rights. Notwithstanding
                           Section 3.02(a)(ii)(B), in the event of (A) a labor
                           action or other event giving rise to Northwest's
                           right to terminate this Agreement pursuant to Section
                           10.03(e) and (B) Northwest has not yet exercised its
                           termination rights, (1) Northwest shall have the
                           right to terminate Leases for, and take immediate
                           possession of, up to eighty-nine (89) CRJ 200/440
                           Aircraft and related Spare Engines selected by
                           Northwest, and (2) if the labor action or other event
                           continues beyond 45 days Northwest shall have the
                           right to select and terminate Leases for, and take
                           immediate possession of, up to that number of CRJ
                           200/440 Aircraft in excess of fifty (50) and the
                           related Spare Engines.


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                  (iv)     Unscheduled Aircraft. Subject to Pinnacle's approval,
                           which shall not be unreasonably withheld, Northwest
                           shall determine the appropriate level of unscheduled
                           Aircraft to be included in Pinnacle's fleet from time
                           to time.

                  (v)      Spare Engine Requirements. Subject to Section
                           3.02(a)(i) above, Northwest and Pinnacle shall
                           mutually determine the appropriate quantity of Spare
                           Engines to be included in Pinnacle's fleet from time
                           to time.

3.       In consideration for the mutual agreements and covenants contained in
         this Amendment, Pinnacle shall pay Northwest $10 million by wire
         transfer on December 13, 2004, and shall pay Northwest an additional
         $5.115 million by wire transfer on or before July 31, 2005.

4.       Miscellaneous. This Amendment may be executed in any number of
         counterparts and by the different parties hereto on separate
         counterparts, each of which counterparts when executed and delivered
         shall be an original, but all of which shall together constitute one
         and the same instrument. This Amendment and the rights and obligations
         of the parties hereunder shall be construed in accordance with and
         governed by the internal laws of the State of Minnesota,
         notwithstanding the choice of law provisions thereof. Except as
         specifically amended, the ASA remains in full force and effect and is
         reaffirmed by each of the parties hereto. From and after the date
         hereof all references in the ASA to the "Agreement" shall be deemed to
         be references to the Agreement as amended by this Amendment.

IN WITNESS WHEREOF, the Parties hereto have executed this Amendment as of the
date and year first set forth above.

PINNACLE AIRLINES, INC.                  NORTHWEST AIRLINES, INC.

By:  \s\ Philip H. Trenary               By:  \s\ Thomas J. Bach
     ---------------------                    ------------------

Name:    Philip H. Trenary               Name:    Thomas J. Bach
Title:   President and                            Title:   Vice President,
         Chief Executive Officer                  Marketing Planning and Airlink


PINNACLE AIRLINES CORP.

By:  \s\ Philip H. Trenary
     ---------------------

Name:    Philip H. Trenary
Title:   President and
         Chief Executive Officer





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