UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                  SCHEDULE 13G
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 3)*


                            World Air Holdings, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                    Common Stock, $.001 par value per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                  98142H105
                  ---------------------------------------------
                                 (CUSIP Number)

                                  May 31, 2005
--------------------------------------------------------------------------------
            (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 disclosure provided in a prior cover page.


         The information required on 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, as amended ("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 8 pages



CUSIP NO. 98142H105
--------------------------------------------------------------------------------
1.      NAME OF REPORTING PERSONS
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       American International Group, Inc.
       I.R.S. Identification No. 13-2592361
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

                                                    (a)      [ ]
                                                    (b)      [ ]
--------------------------------------------------------------------------------
3.    SEC USE ONLY

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

      Incorporated under the laws of the State of Delaware
--------------------------------------------------------------------------------
                        5.    SOLE VOTING POWER
  NUMBER OF                            0
   SHARES                     --------------------------------------------------
BENEFICIALLY            6.    SHARED VOTING POWER
  OWNED BY                     449,125
    EACH                      --------------------------------------------------
 REPORTING              7.    SOLE DISPOSITIVE POWER
   PERSON                              0
    WITH                      --------------------------------------------------
                        8.    SHARED DISPOSITIVE POWER
                               449,125
--------------------------------------------------------------------------------
  9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
       PERSON
                               449,125
--------------------------------------------------------------------------------
10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
      CERTAIN SHARES
                                                     [ ]
--------------------------------------------------------------------------------
11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW  (9)
                               1.90%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON

                                       CO


                                  Page 2 of 8



CUSIP NO. 98142H105
--------------------------------------------------------------------------------
1.      NAME OF REPORTING PERSONS
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


       National Union Fire Insurance Company of Pittsburgh, Pa.
       I.R.S. Identification No. 25-0687550  
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

                                             (a)      [ ]
                                             (b)      [ ]
--------------------------------------------------------------------------------
3.    SEC USE ONLY

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

       Organized under the laws of the State of Pennsylvania
--------------------------------------------------------------------------------
                        5.    SOLE VOTING POWER
  NUMBER OF                            0
   SHARES                     --------------------------------------------------
BENEFICIALLY            6.    SHARED VOTING POWER
  OWNED BY                     449,125
    EACH                      --------------------------------------------------
 REPORTING              7.    SOLE DISPOSITIVE POWER
   PERSON                              0
    WITH                      --------------------------------------------------
                        8.    SHARED DISPOSITIVE POWER
                               449,125
--------------------------------------------------------------------------------
  9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
       PERSON
                               449,125
--------------------------------------------------------------------------------
10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
      CERTAIN SHARES
                                                     [ ]
--------------------------------------------------------------------------------
11.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW  (9)
                               1.90%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON
                                       IC


                                  Page 3 of 8



ITEM 1 (a).       NAME OF ISSUER:

                  World  Air Holdings, Inc.

ITEM 1 (b).       ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  The HLH Building
                  101 World Drive
                  Peachtree City, GA 30269

ITEM 2 (a).       NAME OF PERSON(S) FILING:

                  American International Group, Inc.

                  National Union Fire Insurance Company of Pittsburgh, Pa.

                  
ITEM 2 (b).       ADDRESS OF PRINCIPAL BUSINESS OFFICE(S):

                  American International Group, Inc.
                  70 Pine Street
                  New York, New York  10270

                  National Union Fire Insurance Company of Pittsburgh, Pa.
                  70 Pine Street
                  New York, New York 10270
                                    

ITEM 2 (c).       CITIZENSHIP:

                  The information requested hereunder is set forth
                  under Item 4 of the cover pages to this Schedule 13G.

ITEM 2 (d).       TITLE OF CLASS OF SECURITIES:

                  Common Stock, $.001 par value per share

ITEM 2 (e).       CUSIP NUMBER:  98142H105


                                  Page 4 of 8


ITEM 3.       TYPE OF PERSONS FILING:

                       American International Group, Inc.:
                        
                       (g)       Parent Holding Company, in accordance with Rule
                                 13d-1(b)(ii)(G) promulgated under the 
                                 Securities Exchange Act of 1934, as amended
                                 (the "Act")  


                       National Union Fire Insurance Company of Pittsburgh, Pa.:

                       (c)       Insurance Company as defined in Section
                                 3 (a) (19) of the Act
                       
                                              
ITEM 4.       OWNERSHIP.

                       (a) through (c). National Union Fire Insurance Company of
                       Pittsburgh, PA ("National Union") is deemed to hold
                       449,125 shares of the Issuer's Common Stock through an
                       account managed by Zazove Associates, LLC. American
                       International Group, Inc. ("AIG") is the ultimate parent
                       company of National Union. All other information
                       requested hereunder is set forth under Items 5 through 9
                       and Item 11 of the cover pages to this Schedule 13G.

ITEM 5.       OWNERSHIP OF FIVE PERCENT OR LESS OF CLASS.

                       If this statement is being filed to report the fact that
                       as of the date hereof the reporting person has ceased to
                       be the beneficial owner of more than five percent of the 
                       class of securities, check the following  /X/.

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.

                       See Exhibit 1 attached hereto for the information
                       requested hereunder with respect to the relevant
                       subsidiary of American International Group, Inc.

ITEM 8.       IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE
                       GROUP.

                       Not applicable.

ITEM 9.       NOTICE OF DISSOLUTION OF GROUP.

                       Not applicable.


                                  Page 5 of 8



ITEM 10.      CERTIFICATION.

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

Date:  June 20, 2005

                          AMERICAN INTERNATIONAL GROUP, INC.


                          By /s/ Win J. Neuger
                          ------------------------------------
                          Name:  Win J. Neuger
                          Title: Executive Vice President and 
                                 Chief Investment Officer


                          NATIONAL UNION FIRE INSURANCE OF PITTSBURGH, PA.


                          By /s/ Win J. Neuger
                          ------------------------------------
                          Name:  Win J. Neuger
                          Title: Vice President


                         

                                  Page 6 of 8



                                  EXHIBIT INDEX



Exhibit 1     Identification and Classification of the Subsidiaries Which
              Acquired the Security Being Reported on by the Parent Holding
              Company



                                  Page 7 of 8