Document:

<PAGE>
                                                                    Exhibit 4.43

                       SECURITY AGREEMENT SUPPLEMENT NO. 2
                          (Steelcase Trust No. 2000-1)

         This SECURITY AGREEMENT SUPPLEMENT NO. 2 (Steelcase Trust No. 2000-1),
dated August 23, 2000 (herein called this "Supplement") between FIRST SECURITY
BANK, NATIONAL ASSOCIATION, not in its individual capacity, but solely as
Certificate Trustee (herein called the "Borrower"), under the Steelcase Trust
No. 2000-1 and, FIRST SECURITY TRUST COMPANY OF NEVADA, as Administrative Agent
(the "Administrative Agent") and is filed with the Federal Aviation
Administration ("FAA") as a Supplement to the Security Agreement (defined
herein) a counterpart of which was recorded by the FAA on July 17, 2000 and
assigned conveyance number H099652. This Supplement is accepted and agreed to by
STEELCASE INC., a Michigan corporation (the "Lessee"). Capitalized terms used
herein without definition shall have the meanings set forth in Appendix A to the
Participation Agreement as such term is defined in the Security Agreement.

                                   WITNESSETH:

         WHEREAS, the Borrower, the Administrative Agent and the Lessee have
entered into that certain Security Agreement (Steelcase Trust No. 2000-1) dated
as of May 26, 2000 (the "Security Agreement") which provides for the execution
and delivery of a supplement thereto substantially in the form hereof, which
shall particularly describe the Aircraft constituting part of the Collateral;

         WHEREAS, the Security Agreement relates to the Related Airframe and
Related Engines described below, and a counterpart of the Security Agreement is
attached hereto and made a part hereof and this Supplement, together with such
counterpart of the Security Agreement, is being filed for recordation on the
date hereof with the FAA as one document;

         NOW, THEREFORE, Borrower and Lessee hereby convey, grant, assign,
transfer, hypothecate, mortgage and set over to the Administrative Agent for the
benefit of the Secured Parties, a security interest in and lien on all present
and future right, title and interest of Borrower or Lessee, in, to and under the
following (whether now existing or hereafter acquired) but excluding all
Excluded Amounts:

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                                    AIRCRAFT

              The following Related Airframe identified as follows:

<TABLE>
<CAPTION>
                                                               FAA
                                                           Registration                Manufacturer's
Manufacturer                      Model                       Number                   Serial Number
-----------                       -----                    ------------                --------------
<S>                            <C>                         <C>                         <C>
Dassault                       Falcon 900EX                   N377C                          66
</TABLE>

together with all Parts from time to time thereto belonging, owned by the
Borrower or Lessee and installed in or attached to said Airframe.

                                 RELATED ENGINES

         The following aircraft engines, each such engine having 750 or more
rated take-off horsepower or the equivalent thereof, whether or not such engines
shall be installed in or attached to its Related Airframe or any other airframe
identified as follows:

<TABLE>
<CAPTION>
   Related
  Airframe
    FAA
Registration                                                                Manufacturer's
   Number          Manufacturer                    Model                    Serial Number
------------      ------------                     -----                    --------------
<S>               <C>                           <C>                         <C>
N377SC            AlliedSignal                  TFE 731-60                     P112311
N377SC            AlliedSignal                  TFE 731-60                     P112312
N377SC            AlliedSignal                  TFE 731-60                     P112313
</TABLE>

together with all Parts belonging, by whomsoever manufactured, owned by the
Borrower or Lessee and installed in or attached to said aircraft engines.

         Together with all substitutions, renewals and replacements of and
additions, improvements, accessions and accumulations to the property above
described for which title vests in the Borrower or Lessee under the Operative
Documents.

         As further security for the obligations referred to above and secured
by the Security Agreement and hereby, the Borrower and the Lessee hereby confirm
that the Lien of the Security Agreement over the Collateral includes the Lease
Supplement dated the date hereof and executed by the Lessee covering the
property described above and all right, title and interest, now existing or
hereafter acquired of the Borrower in and to that certain Purchase Agreement
Assignment dated the date hereof and executed by the Lessee, Borrower and
Dassault Falcon Jet Corp.

         TO HAVE AND TO HOLD all and singular the aforesaid property unto the
Administrative Agent, its successors and assigns, for the security and benefit
of the Lenders and

<PAGE>

the Certificate Holders from time to time, and for the uses and purposes and
subject to the terms and provisions set forth in the Security Agreement.

         This Supplement shall be construed as supplemental to the Security
Agreement and shall form a part of it, and the Security Agreement is hereby
incorporated by reference herein and is hereby ratified, approved and confirmed.

         This Supplement may be executed in any number of counterparts, each
executed counterpart constituting an original but all together one and the same
instrument.

         AND, FURTHER, the Borrower hereby acknowledges that the delivered
Assets referred to in this Supplement and the aforesaid Lease Supplement have
been delivered to the Borrower and are included in the property of the Borrower
covered by all the terms and conditions of the Trust Agreement, subject to the
pledge and mortgage thereof under the Security Agreement.

            [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK].

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         IN WITNESS WHEREOF, the parties thereto have caused this Supplement to
be duly executed by one of their respective officers, thereunto duly authorized,
on the day and year first above written.

                                       FIRST SECURITY BANK, NATIONAL
                                       ASSOCIATION, not individually, but solely
                                       as the Certificate Trustee under
                                       Steelcase Trust No. 2000-1

                                       By:       /s/ Val T. Orton
                                          --------------------------------------
                                       Name:     Val T. Orton
                                       Title:    Vice President

                                       FIRST SECURITY TRUST COMPANY OF NEVADA,
                                       as the Administrative Agent for the
                                       Lenders and the Certificate Holders

                                       By:       /s/ Val T. Orton
                                          --------------------------------------
                                       Name:     Val T. Orton
                                       Title:    Trust Officer

Accepted and Agreed to:

STEELCASE INC.

By:           /s/ Gary P. Malburg
   ----------------------------------------------
Name:         Gary P. Malburg
Title:        VP - Finance and Treasurer<PAGE>
                                                                    Exhibit 4.44

                               NOTICE OF DELIVERY

         PURSUANT TO Section 2.3(b) of the Participation Agreement (Steelcase
Trust No. 2000-1), dated as of May 26, 2000 (as amended and supplemented through
the date hereof, the "Participation Agreement") among Steelcase Inc., as lessee
("Lessee"), First Security Bank, National Association (the "Trust Company"), in
its individual capacity and as Certificate Trustee (in such capacity, the
"Certificate Trustee"), First Security Trust Company of Nevada, as
Administrative Agent, Hatteras Funding Corporation, as CP Lender, the persons
named on Schedule I of the Participation Agreement, as Certificate Holders, the
persons named on Schedule II of the Participation Agreement, as Facility
Lenders, and the Bank of America, National Association, as administrator, Lessee
hereby provides the Administrative Agent with notice that:

1.       the Lessee shall cause the Aircraft set forth on Exhibit A hereto (the
         "Aircraft") to be delivered to the Certificate Trustee on May 26, 2000
         (the "Closing Date");

2.       the Equipment Cost for the Aircraft is $19,000,000;

3.       the disbursement of the Equipment Cost to Lessee as payment for the
         Aircraft delivered on the Closing Date should be wired to Lessee in
         accordance with the wiring instructions set forth on the attached
         Exhibit B;

4.       the aggregate Equipment Cost to be funded on the Closing Date is
         $19,000,000.00;

5.       the respective amounts of the Commitments required to be funded on the
         Closing Date with respect to the Aircraft is as follows:

         (a)      $338,887.00 by Banc of America Leasing & Capital, LLC, and
                  $338,887.00 by the Bank of Nova Scotia, as Certificate
                  Holders;

         (b)      $18,322,226.00 by Hatteras Funding Corporation, as CP Lender.

6.       Capitalized Terms used herein and not otherwise defined herein have the
         meanings provided thereto in Appendix A to the Participation Agreement.

                  [Remainder of page intentionally left blank]

<PAGE>

         EXECUTED this 19th day of May, 2000 by:

                                       STEELCASE INC.

                                       By:   /s/ Alwyn Rougier-Chapman
                                           -------------------------------------
                                       Its:  Senior VP Finance and CFO
                                       Name: Alwyn Rougier-Chapman

                                        2

<PAGE>

                                    EXHIBIT A
                             DESCRIPTION OF AIRCRAFT

One 1996 Dassault Aviation Falcon 2000 aircraft bearing manufacturer's serial
number 24 and U.S. Registration No. N376SC with two (2) CFE Model 738-1-1B
engines installed thereon, bearing manufacturer's serial numbers P105163 and
P105160, respectively, and all logs, manuals and data, and inspection,
maintenance, modification and overhaul records as are required to be maintained
with respect to such Aircraft pursuant to Section 8 of the Lease.

                                        3

<PAGE>

                                    EXHIBIT B
                               WIRING INSTRUCTIONS

                          The Northern Trust Company
                          ABA No.: 071000152
                          Account No.: 68349
                          Account Name: Steelcase Inc.

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