SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                              (Amendment No. ____)

                                 PartsBase, Inc.
                                (Name of Issuer)

                         Common Stock, Par Value $0.001
                         (Title of Class of Securities)

                                   70214P 10 9
                                 (CUSIP Number)

                                  Atlas II, LP
                                630 Fifth Avenue
                                   20th Floor
                               New York, NY 10111
                              Attn: Richard Jacinto

                              Marathon Partners LP
                            52 Vanderbilt Ave, 5th Fl
                               New York, NY 10017
                               Attn: Mario Cibelli

            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                  July 15, 2002
             (Date of Event Which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because ofss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check the
following box. [X]

*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 2 of 7
CUSIP No.    70214P 10 9
            -------------

--------------------------------------------------------------------------------
1.    NAME OF REPORTING PERSON                                 ATLAS II, L.P.
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               a  [ ]
                                                                      b  [X]
--------------------------------------------------------------------------------
3.    SEC USE ONLY

--------------------------------------------------------------------------------
4.    SOURCE OF FUNDS*
      WC
--------------------------------------------------------------------------------
5.    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
2(d) OR 2(e) [ ]
--------------------------------------------------------------------------------
6.    CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
--------------------------------------------------------------------------------
                                                7.    SOLE VOTING POWER

         NUMBER OF                                         0
          SHARES                                --------------------------------
       BENEFICIALLY                             8.    SHARED VOTING POWER
          OWNED
         BY EACH                                      1,471,200
        REPORTING                               --------------------------------
       PERSON WITH                              9.    SOLE DISPOSITIVE POWER

                                                        866,000
                                                --------------------------------
                                                10.   SHARED DISPOSITIVE POWER

                                                           0
--------------------------------------------------------------------------------
11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      1,471,200
--------------------------------------------------------------------------------
12.   CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*  [ ]

--------------------------------------------------------------------------------
13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

      10.5%
--------------------------------------------------------------------------------
14.   TYPE OF REPORTING PERSON*

      PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!



CUSIP No. 70214P 10 9

--------------------------------------------------------------------------------
1.    NAME OF REPORTING PERSON                              Marathon Partners LP
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                   a [ ]
                                                                          b [X]
--------------------------------------------------------------------------------
3.    SEC USE ONLY
--------------------------------------------------------------------------------
4.    SOURCE OF FUNDS*
      WC
--------------------------------------------------------------------------------
5.    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
2(d) OR 2(e) [ ]
--------------------------------------------------------------------------------
6.    CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
--------------------------------------------------------------------------------
                                           7.       SOLE VOTING POWER

             NUMBER OF                                  0
              SHARES                       -------------------------------------
            BENEFICIALLY                   8.       SHARED VOTING POWER
               OWNED
              BY EACH                               1,471,200
             REPORTING                     -------------------------------------
            PERSON WITH                    9.       SOLE DISPOSITIVE POWER

                                                      605,200
                                           -------------------------------------
                                           10.      SHARED DISPOSITIVE POWER

                                                        0
--------------------------------------------------------------------------------
11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      1,471,200
--------------------------------------------------------------------------------
12.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ]

--------------------------------------------------------------------------------
13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      10.5%
--------------------------------------------------------------------------------
14.   TYPE OF REPORTING PERSON*
      PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGES, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.







Item 1.  Security and Issuer.
         -------------------

This  Schedule  13D  relates to shares of Common  Stock,  par value  $0.001 (the
"Shares") of PartsBase,  Inc., a Delaware corporation ("Issuer"). The address of
the Issuer's  principal  executive office is 621 NW 53rd Street,  Seventh Floor,
Boca Raton,  Florida 33487.  The Reporting  Persons (as described  below) own an
aggregate of 1,471,200 Shares as set forth in Item 5.

Item 2.  Identity and Background.
         -----------------------

     a. The  persons  filing  this  statement  are Atlas II,  LP  ("Atlas")  and
Marathon  Partners  LP  ("Marathon"),  collectively  referred to together as the
"Reporting Persons".

     b. The business  addresses for Atlas is 630 Fifth Avenue,  20th Floor,  New
York,  NY 10100 and for  Marathon is 52  Vanderbilt  Ave,  5th Fl, New York,  NY
10017.

     c. Atlas and Marathon manage and operate as investment funds.

     Neither of the Reporting Persons,  during the past five (5) years, have not
(i) been convicted in a criminal  proceeding  (excluding  traffic  violations or
similar misdemeanors),  or (ii) been a party to a civil proceeding of a judicial
or  administrative  body of  competent  jurisdiction,  and as a  result  of such
proceeding,  were or are subject to a judgment,  decree or final order enjoining
future violations of, or prohibiting or mandating  activities  subject to United
States federal or state securities laws or finding any violation with respect to
such laws.

Item 3.  Source and Amount of Funds or Other Consideration.
         -------------------------------------------------

         Not applicable.

Item 4.  Purpose of the Transactions.
         ---------------------------

This filing on Schedule  13D has been made  because the  Reporting  Persons have
stated their  opposition to three  proposals  currently  being  evaluated by the
Issuer's Special  Committee of the Board of Directors in a letter dated July 12,
2002,  wherein they stated that higher  returns might be possible  through other
avenues not fully evaluated.  More specifically,  the Reporting Group has stated
its  intention  to oppose the  proposal  by the  Issuer's  President,  Robert A.
Hamond, Jr. and R. Hammond,  L.P., where all of the outstanding shares of Common
Stock (other than those owned by Robert A.  Hamond,  Jr. and R.  Hammond,  L.P.)
would be purchased for $1.25 per share (the "Going  Private  Transaction"),  and
the proposal by  AirOperations.com  to acquire all outstanding shares at a value
of $1.30 per share. Based on the stated opposition, the Reporting Persons may be
deemed to hold shares of the  Issuer's  Common Stock with a purpose or effect of
changing or influencing control of the Reporting Persons. The Reporting Persons,
however,  do not  concede  that they hold  shares  of Common  Stock  with such a
purpose or  effect.  Additionally,  because a letter  was sent on July 15,  2002
announcing that the Reporting  Persons intended to vote their shares of Issuer's
Common  Stock  against  the  two  proposals  being  considered  by  the  Special
Committee, it could be alleged that a "group" has been formed within the meaning
of Rule 13d-5(b)(1) of the Securities Exchange Act of 1934 (the "Exchange Act").
While  none of the  Reporting  Persons  concedes  that such a  "group"  has been
formed,  this  filing  is  being  made as if such a  "group"  exists  to  ensure
compliance with the Exchange Act.


     The Reporting Persons plan to oppose the proposals outlined in the Issuer's
press releases,  as currently  being  considered by the Special  Committee,  and
reserve  the right to file  opposing  proxy  material  with the  Securities  and
Exchange  Commission  relating to any future  solicitation  of proxies  from the
stockholders  of the Issuer in connection  with a meeting of stockholders of the
Issuer that might be held for the purpose of voting on various matters  relating
to the proposals.  This filing does not constitute a solicitation  for any proxy
and is filed to disclose the intent of the Reporting Group.

Item 5.  Interest in Securities of the Issuer.
         ------------------------------------

     (a) The Reporting Persons  aggregately  beneficially own 1,471,200 or 10.5%
of the shares of Common Stock of the Issuer.

     (b)  Atlas  has  shared  voting  power  over  1,471,200   Shares  and  sole
dispositive  power over 866,800  shares.  Marathon has shared  voting power over
1,471,200  Shares and sole  dispositive  power over  605,200  (of which  100,800
Shares are held on behalf of clients  managed  accounts and 400 Shares are owned
by the children of Mario Cibelli, Managing Member of Marathon.

Item 6.  Contracts, Arrangements, Understandings  or  Relationships with Respect
         to Securities of the Issuer.
         -----------------------------------------------------------------------

         See Item 7 regarding Joint Filing Agreement.

Item 7.  Materials to be Filed as Exhibits.
         ---------------------------------

         Exhibit A - Joint Filing Agreement
         Exhibit B - Letter to Special Committee








                                    SIGNATURE

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




                                                  ATLAS II, L.P.,
                                                  A New York Limited Partnership


                                                  /S/ RICHARD JACINTO, II
Date:  7/15/02                                    ______________________________
                                                  Richard Jacinto, II
                                                  General Partner



                                                  MARATHON PARTNERS LP,
                                                  A New York Limited Partnership


                                                  /S/ MARIO D. CIBELLI
Date:  7/15/02                                    ______________________________
                                                  Mario Cibelli,
                                                  Managing Member




                                    EXHIBIT A

                             JOINT FILING AGREEMENT


     The  undersigned  acknowledge  and agree that the  foregoing  statement  on
Schedule  13D is  filed  on  behalf  of each of the  undersigned  and  that  all
subsequent amendments to this statement on Schedule 13D shall be filed on behalf
of each of the  undersigned  without the  necessity of filing  additional  joint
filing  agreements.  The undersigned  acknowledge that each shall be responsible
for the timely filing of such amendments,  and for the completeness and accuracy
of the information concerning it contained therein, but shall not be responsible
for the  completeness  and  accuracy of the  information  concerning  the other,
except  to the  extent  that  it  knows  or has  reason  to  believe  that  such
information  is not accurate.  It is  understood  and agreed that a copy of this
Agreement shall be attached as an exhibit to the foregoing statement on Schedule
13D.

                                                  ATLAS II, L.P.,
                                                  A New York Limited Partnership


                                                  /S/ RICHARD JACINTO, II
Date:  7/15/02                                    ______________________________
                                                  Richard Jacinto, II
                                                  General Partner


                                                  MARATHON PARTNERS LP,
                                                  A New York Limited Partnership


                                                 /S/ MARIO D. CIBELLI
Date:  7/15/02                                   _______________________________
                                                 Mario Cibelli,
                                                 Managing Member



                                  July 15, 2002


VIA FACSIMILE and US MAIL
(561) 953-0795

Special Committee of the Board of Directors
PartsBase, Inc.
905 Clint Moore Road
Boca Raton, Florida  33431

Dear Board Members:

     This letter was  prepared  by Atlas II, LP and  Marathon  Partners  LP, who
collectively own a significant position in PartsBase,  Inc. ("Company"),  and is
delivered  to you  for  consideration  in  evaluating  proposed  offers  for the
acquisition  of the  Company.  It is our present  intention to oppose all of the
proposed  offers as  outlined  in the  Company's  press  releases,  based on our
understanding  that current or prospective  offers for parts of the Company on a
liquidation  basis would  provide a higher  return to  investors  (approximately
$1.75 to $2.00 per shares) as opposed to the lower value  established  by either
of the acquisition offers under consideration (at $1.25 to $1.30 per share).

     As of  March  31,  2002,  based  on the  Company's  Form  10-Q,  there  was
approximately  $23,842,323 in cash on the balance sheet, and relatively no debt.
In addition,  we have obtained supportive  information that an offer to purchase
the Company's  website and internet  platform might be made which,  although not
firm, should equate to a per share value closer to $2.00 (with 13,977,920 shares
of common stock  outstanding)  based on a sale of certain components of the core
business and  liquidation of the remaining  business.  Clearly this is a greater
value to stockholders than the proposals being considered, and should be pursued
prior to any decision on the existing offers.

     Accordingly,  we would  encourage  you to re-open  the  process and further
evaluate  other  options  available  to  maximize  stockholder  value  under the
circumstances, and extend the time period to accept different types of offers in
an effort to fully evaluate all prospects for a better return to investors.

Sincerely,

Atlas II, LP                                      Marathon Partners LP


/S/ RICHARD JACINTO, II                           /S/ MARIO D. CIBELLI
Richard Jacinto, General Partner                  Mario Cibelli, Managing Member