Document:

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                                                                     EXHIBIT 4.5

                                 Airborne, Inc.

                                5.75% Convertible
                         Senior Notes due April 1, 2007

                          Registration Rights Agreement
                          -----------------------------

                                                                 March 25, 2002
Goldman, Sachs & Co.,
First Union Securities, Inc.,
c/o Goldman, Sachs & Co.,
85 Broad Street,
New York, New York 10004.

Ladies and Gentlemen:

         Airborne, Inc., a Delaware corporation (the "Company"), proposes to
issue and sell to the Purchasers (as defined herein) upon the terms set forth in
the Purchase Agreement (as defined herein) its 5.75% Convertible Senior Notes
due April 1, 2007, which are unconditionally guaranteed by Airborne Express,
Inc., a Delaware corporation, ABX Air, Inc., a Delaware corporation, Sky
Courier, Inc., a Delaware corporation, Wilmington Air Park, Inc., an Ohio
corporation, Airborne FTZ, Inc., an Ohio corporation, Aviation Fuel, Inc., an
Ohio corporation, and Sound Suppression, Inc., an Ohio corporation. As an
inducement to the Purchasers to enter into the Purchase Agreement and in
satisfaction of a condition to the obligations of the Purchasers thereunder, the
Company agrees with the Purchasers for the benefit of Holders (as defined
herein) from time to time of the Registrable Securities (as defined herein) as
follows:

         1.     Definitions.

         (a)    Capitalized terms used herein without definition shall have the
meanings ascribed to them in the Purchase Agreement. As used in this Agreement,
the following defined terms shall have the following meanings:

         "Act" or "Securities Act" means the United States Securities Act of
1933, as amended.

         "Affiliate" of any specified person means any other person which,
directly or indirectly, is in control of, is controlled by, or is under common
control with such specified person. For purposes of this definition, control of
a person means the power, direct or indirect, to direct or cause the direction
of the management and policies of such person whether by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

         "Closing Date" means the First Time of Delivery as defined in the
Purchase Agreement.

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         "Commission" means the United States Securities and Exchange
Commission, or any other federal agency at the time administering the Exchange
Act or the Securities Act, whichever is the relevant statute for the particular
purpose.

         "Common Stock" means the Company's common stock, par value $1.00 per
share.

         "DTC" means The Depository Trust Company.

         "Effective Date" has the meaning assigned thereto in Section 2(b)(i)
hereof.

         "Effective Failure" has the meaning assigned thereto in Section 7(b)
hereof.

         "Effectiveness Period" has the meaning assigned thereto in Section
2(b)(i) hereof.

         "Effective Time" means the time at which the Commission declares the
Shelf Registration Statement effective or at which the Shelf Registration
Statement otherwise becomes effective.

         "Electing Holder" has the meaning assigned thereto in Section 3(a)(iii)
hereof.

         "Exchange Act" means the United States Securities Exchange Act of 1934,
as amended.

         "Guarantor" has the meaning assigned thereto in the Indenture.

         "Holder" means any person that is the record owner of Registrable
Securities (and includes any person that has a beneficial interest in any
Registrable Security).

         "Indenture" means the Indenture, dated as of March 25, 2002, among the
Company, the Guarantors and The Bank of New York, as Trustee, as amended and
supplemented from time to time in accordance with its terms.

         "Liquidated Damages" has the meaning assigned thereto in Section 7(a)
hereof.

         "Managing Underwriters" means the investment banker or investment
bankers and manager or managers that shall administer an underwritten offering,
if any, conducted pursuant to Section 6 hereof.

         "NASD Rules" means the Rules of the National Association of Securities
Dealers, Inc., as amended from time to time.

         "Notice and Questionnaire" means a Notice of Registration Statement and
Selling Security Holder Questionnaire substantially in the form of Appendix A
hereto.

         The term "person" means an individual, partnership, corporation,
limited liability company, trust or unincorporated organization, or a government
or agency or political subdivision thereof.

         "Prospectus" means the prospectus (including, without limitation, any
preliminary prospectus, any final prospectus and any prospectus that discloses
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon

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Rule 430A under the Act) included in the Shelf Registration Statement, as
amended or supplemented by any prospectus supplement with respect to the terms
of the offering of any portion of the Registrable Securities covered by the
Shelf Registration Statement and by all other amendments and supplements to such
prospectus, including all material incorporated by reference in such prospectus
and all documents filed after the date of such prospectus by the Company under
the Exchange Act and incorporated by reference therein.

         "Purchase Agreement" means the purchase agreement, dated as of March
19, 2002, among the Purchasers, the Guarantors and the Company relating to the
Securities.

         "Purchasers" means Goldman, Sachs & Co. and First Union Securities,
 Inc.

         "Registrable Securities" means all or any portion of the Securities
issued from time to time under the Indenture in registered form and the shares
of Common Stock issuable upon conversion of such Securities; provided, however,
                                                             --------  -------
that a security ceases to be a Registrable Security when it is no longer a
Restricted Security.

         "Registration Default" has the meaning assigned thereto in Section 7(a)
hereof.

         "Restricted Security" means any Security or share of Common Stock
issuable upon conversion thereof except any such Security or share of Common
Stock that (i) has been effectively registered under the Securities Act and sold
in a manner contemplated by the Shelf Registration Statement, (ii) has been
transferred in compliance with Rule 144 under the Securities Act (or any
successor provision thereto) or is transferable pursuant to paragraph (k) of
such Rule 144 (or any successor provision thereto), or (iii) has otherwise been
transferred and a new Security or share of Common Stock not subject to transfer
restrictions under the Securities Act has been delivered by or on behalf of the
Company in accordance with Section 3.3 of the Indenture.

         "Rules and Regulations" means the published rules and regulations of
the Commission promulgated under the Securities Act or the Exchange Act, as in
effect at any relevant time.

         "Securities" means the 5.75% Convertible Senior Notes due April 1,
2007. Each Security is entitled to the benefit of the guarantees provided for in
the Indenture (the "Guarantees") and, unless the context otherwise requires, any
reference herein to a "Security" or a "Registrable Security" shall include a
reference to the related Guarantees.

         "Shelf Registration" means a registration effected pursuant to Section
2 hereof.

         "Shelf Registration Statement" means a "shelf" registration statement
filed under the Securities Act providing for the registration of, and the sale
on a continuous or delayed basis by the Holders of, all of the Registrable
Securities pursuant to Rule 415 under the Securities Act and/or any similar rule
that may be adopted by the Commission, filed by the Company pursuant to the
provisions of Section 2 of this Agreement, including the Prospectus contained
therein, any amendments and supplements to such registration statement,
including post effective amendments, and all exhibits and all material
incorporated by reference in such registration statement.

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         "Trust Indenture Act" means the Trust Indenture Act of 1939, or any
successor thereto, and the rules, regulations and forms promulgated thereunder,
as the same shall be amended from time to time.

         The term "underwriter" means any underwriter of Registrable Securities
in connection with an offering thereof under a Shelf Registration Statement.

         (b)  Wherever there is a reference in this Agreement to a percentage of
the "principal amount" of Registrable Securities or to a percentage of
Registrable Securities, Common Stock shall be treated as representing the
principal amount of Securities that was surrendered for conversion or exchange
in order to receive such number of shares of Common Stock.

         2.   Shelf Registration.

         (a)  The Company and the Guarantors shall, no later than 90 calendar
days following the Closing Date, file with the Commission a Shelf Registration
Statement relating to the offer and sale of the Registrable Securities by the
Holders from time to time in accordance with the methods of distribution elected
by such Holders and set forth in such Shelf Registration Statement and,
thereafter, shall use their best efforts to cause such Shelf Registration
Statement to be declared effective under the Act no later than 180 calendar days
following the Closing Date; provided, however, that the Company may, upon
written notice to all Holders, postpone having the Shelf Registration Statement
declared effective for a reasonable period not to exceed 90 days if the Board of
Directors of the Company shall have determined in good faith that because of
valid business reasons (not including avoidance of the Company's obligations
hereunder), including the acquisition or divestiture of assets, pending
corporate developments and similar events, it is in the best interests of the
Company to postpone having the Shelf Registration Statement declared effective;
provided, further, however, that no Holder shall be entitled to be named as a
selling security holder in the Shelf Registration Statement or to use the
Prospectus forming a part thereof for resales of Registrable Securities unless
such Holder is an Electing Holder.

         (b)  The Company and the Guarantors shall, subject to Section 2(c), use
their best efforts:

              (i)  to keep the Shelf Registration Statement continuously
         effective in order to permit the Prospectus forming a part thereof to
         be usable by Holders until the earliest of (1) the sale of all
         Registrable Securities registered under the Shelf Registration
         Statement; (2) the expiration of the period referred to in Rule 144(k)
         under the Act with respect to all Registrable Securities held by
         Persons that are not Affiliates of the Company; and (3) two years from
         the date (the "Effective Date") such Shelf Registration Statement is
         declared effective (such period being referred to herein as the
         "Effectiveness Period");

              (ii) after the Effective Time of the Shelf Registration Statement,
         promptly upon the request of any Holder of Registrable Securities that
         is not then an Electing Holder, to take any action reasonably necessary
         to enable such Holder to use the Prospectus forming a part thereof for
         offers and resales of Registrable Securities, including, without
         limitation, any action necessary to identify such Holder as a selling
         security holder in the Shelf Registration Statement; provided, however,
         that nothing in

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         this subparagraph shall relieve such Holder of the obligation to
         return a completed and signed Notice and Questionnaire to the Company
         in accordance with Section 3(a)(ii) hereof; and

              (iii) if at any time the Securities, pursuant to Article XII of
         the Indenture, are convertible into securities other than Common Stock,
         to cause, or to cause any successor under the Indenture to cause, such
         securities to be included in the Shelf Registration Statement no later
         than the date on which the Securities may then be convertible into such
         securities.

The Company shall be deemed not to have used its best efforts to keep the Shelf
Registration Statement effective during the requisite period if the Company or
any of the Guarantors voluntarily takes any action that would result in Holders
of Registrable Securities covered thereby not being able to offer and sell any
of such Registrable Securities during that period, unless such action is (A)
required by applicable law and the Company thereafter promptly complies with the
requirements of paragraph 3(j) below or (B) permitted pursuant to Section 2(c)
below.

         (c)  The Company may suspend the use of the Prospectus for a period not
to exceed 30 days in any 90-day period or an aggregate of 90 days in any 365-day
period if the Board of Directors of the Company shall have determined in good
faith that because of valid business reasons (not including avoidance of the
Company's obligations hereunder), including the acquisition or divestiture of
assets, pending corporate developments and similar events, it is in the best
interests of the Company to suspend such use, and prior to suspending such use
the Company provides the Holders with written notice of such suspension, which
notice need not specify the nature of the event giving rise to such suspension.

         3.   Registration Procedures. In connection with the Shelf Registration
Statement, the following provisions shall apply:

         (a) (i) Not less than 30 calendar days prior to the Effective Time of
the Shelf Registration Statement, the Company shall mail the Notice and
Questionnaire to the Holders of Registrable Securities. No Holder shall be
entitled to be named as a selling security holder in the Shelf Registration
Statement as of the Effective Time, and no Holder shall be entitled to use the
Prospectus forming a part thereof for offers and resales of Registrable
Securities at any time, unless such Holder has returned a completed and signed
Notice and Questionnaire to the Company by the deadline for response set forth
therein; provided, however, Holders of Registrable Securities shall have at
least 28 calendar days from the date on which the Notice and Questionnaire is
first mailed to such Holders to return a completed and signed Notice and
Questionnaire to the Company.

              (ii) After the Effective Time of the Shelf Registration Statement,
         the Company shall, upon the request of any Holder of Registrable
         Securities that is not then an Electing Holder, promptly send a Notice
         and Questionnaire to such Holder. The Company shall not be required to
         take any action to name such Holder as a selling security holder in the
         Shelf Registration Statement or to enable such Holder to use the
         Prospectus forming a part thereof for offers or resales of Registrable
         Securities until such Holder has returned a completed and signed Notice
         and Questionnaire to the Company.

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              (iii) The term "Electing Holder" shall mean any Holder of
         Registrable Securities that has returned a completed and signed Notice
         and Questionnaire to the Company in accordance with Section 3(a)(i) or
         3(a)(ii) hereof.

         (b)  The Company shall use its best efforts to reflect in the Shelf
Registration Statement and each amendment thereto and each amendment or
supplement, if any, to the Prospectus included therein, at the Effective Time or
when so filed with the Commission, as the case may be, such comments as such
Holders and their respective counsel reasonably may propose prior to the
Effective Time or the time of filing such amendment or supplement, as the case
may be.

         (c)  The Company shall promptly take such action as may be necessary so
that (i) each of the Shelf Registration Statement and any amendment thereto and
the Prospectus forming a part thereof and any amendment or supplement thereto
(and each report or other document incorporated therein by reference in each
case) complies in all material respects with the Securities Act and the Exchange
Act and the respective rules and regulations thereunder, (ii) each of the Shelf
Registration Statement and any amendment thereto does not, when it becomes
effective, contain an untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading and (iii) each of the Prospectus forming a part of the
Shelf Registration Statement, and any amendment or supplement to such
Prospectus, does not at any time during the Effectiveness Period include an
untrue statement of a material fact or omit to state a material fact necessary
in order to make the statements therein, in the light of the circumstances under
which they were made, not misleading; provided, however, that the Company shall
not be required to take such action in respect of the Shelf Registration
Statement or any amendment thereto or of the Prospectus or any amendment or
supplement to the Prospectus if the Board of Directors of the Company has made a
determination pursuant to Section 2(c) for so long as the suspension pursuant to
Section 2(c) is continuing.

         (d)  The Company shall promptly advise each Electing Holder, and shall
confirm such advice in writing if so requested by any such Electing Holder:

              (i) when a Shelf Registration Statement or any post-effective
         amendment thereto has become effective, in each case making a public
         announcement thereof by release made to Reuters Economic Services and
         Bloomberg Business News;

              (ii) of any request by the Commission after the Effective Time for
         amendments or supplements to the Shelf Registration Statement or the
         Prospectus included therein or for additional information;

              (iii) of the issuance by the Commission of any stop order
         suspending the effectiveness of the Shelf Registration Statement or the
         initiation of any proceedings for such purpose;

              (iv) of the receipt by the Company of any notification with
         respect to the suspension of the qualification of the securities
         included in the Shelf Registration Statement for sale in any
         jurisdiction or the initiation of any proceeding for such purpose; and

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              (v) of the happening of any event or the existence of any state of
         facts that requires the making of any changes in the Shelf Registration
         Statement or the Prospectus included therein so that, as of such date,
         such Shelf Registration Statement and Prospectus do not contain an
         untrue statement of a material fact and do not omit to state a material
         fact required to be stated therein or necessary to make the statements
         therein (in the case of the Prospectus, in light of the circumstances
         under which they were made) not misleading (which advice shall be
         accompanied by an instruction to such Holders to suspend the use of the
         Prospectus until the requisite changes have been made).

         (e)  The Company shall use its best efforts to prevent the issuance,
and if issued to obtain the withdrawal at the earliest possible time, of any
order suspending the effectiveness of the Shelf Registration Statement.

         (f)  The Company shall furnish to each Electing Holder, without charge,
at least one copy of the Shelf Registration Statement and all post-effective
amendments thereto, including financial statements and schedules, and, if such
Electing Holder so requests in writing, all reports, other documents and
exhibits that are filed with or incorporated by reference in the Shelf
Registration Statement.

         (g)  The Company shall, during the Effectiveness Period, deliver to
each Electing Holder, without charge, as many copies of the Prospectus
(including each preliminary Prospectus) included in the Shelf Registration
Statement and any amendment or supplement thereto as such Electing Holder may
reasonably request; and the Company consents (except during the periods
specified in Section 2(c) above or during the continuance of any event described
in Section 3(d)(v) above) to the use of the Prospectus and any amendment or
supplement thereto by each of the Electing Holders in connection with the
offering and sale of the Registrable Securities covered by the Prospectus and
any amendment or supplement thereto during the Effectiveness Period.

         (h)  Prior to any offering of Registrable Securities pursuant to the
Shelf Registration Statement, the Company shall (i) register or qualify or
cooperate with the Electing Holders and their respective counsel in connection
with the registration or qualification of such Registrable Securities for offer
and sale under the securities or "blue sky" laws of such jurisdictions within
the United States as any Electing Holder may reasonably request, (ii) keep such
registrations or qualifications in effect and comply with such laws so as to
permit the continuance of offers and sales in such jurisdictions for so long as
may be necessary to enable any Electing Holder or underwriter, if any, to
complete its distribution of Registrable Securities pursuant to the Shelf
Registration Statement, and (iii) take any and all other actions necessary or
advisable to enable the disposition in such jurisdictions of such Registrable
Securities; provided, however, that in no event shall the Company or the
Guarantors be obligated to (A) qualify as a foreign corporation or as a dealer
in securities in any jurisdiction where it would not otherwise be required to so
qualify but for this Section 3(h) or (B) file any general consent to service of
process in any jurisdiction where it is not as of the date hereof so subject.

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         (i) Unless any Registrable Securities shall be in book-entry only form,
the Company and the Guarantors shall cooperate with the Electing Holders to
facilitate the timely preparation and delivery of certificates representing
Registrable Securities sold pursuant to the Shelf Registration Statement, which
certificates, if so required by any securities exchange upon which any
Registrable Securities are listed, shall be penned, lithographed or engraved, or
produced by any combination of such methods, on steel engraved borders, and
which certificates shall be free of any restrictive legends and in such
permitted denominations and registered in such names as Electing Holders may
request in connection with the sale of Registrable Securities pursuant to the
Shelf Registration Statement.

         (j) Upon the occurrence of any fact or event contemplated by paragraph
3(d)(v) above, the Company shall promptly prepare a post-effective amendment to
any Shelf Registration Statement or an amendment or supplement to the related
Prospectus or file any other required document so that, as thereafter delivered
to purchasers of the Registrable Securities included therein, the Prospectus
will not include an untrue statement of a material fact or omit to state any
material fact necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading; provided, however,
that the Company shall not be required to file such amendment, supplement or
document if the Board of Directors of the Company has made a determination
pursuant to Section 2(c) for so long as the suspension pursuant to Section 2(c)
is continuing. If the Company notifies the Electing Holders of the occurrence of
any fact or event contemplated by paragraph 3(d)(v) above and suspends use of
the Prospectus pursuant to Section 2(c), the Electing Holder shall suspend the
use of the Prospectus until the requisite changes to the Prospectus have been
made.

         (k) Not later than the Effective Time of the Shelf Registration
Statement, the Company shall provide a CUSIP number for the Registrable
Securities that are debt securities.

         (l) The Company shall use its best efforts to comply with all
applicable Rules and Regulations, and to make generally available to its
security holders as soon as practicable, but in any event not later than
eighteen months after (i) the effective date (as defined in Rule 158(c) under
the Securities Act) of the Shelf Registration Statement, (ii) the effective date
of each post-effective amendment to the Shelf Registration Statement, and (iii)
the date of each filing by the Company with the Commission of an Annual Report
on Form 10-K that is incorporated by reference in the Shelf Registration
Statement, an earning statement of the Company and its subsidiaries complying
with Section 11(a) of the Securities Act and the rules and regulations of the
Commission thereunder (including, at the option of the Company, Rule 158).

         (m) Not later than the Effective Time of the Shelf Registration
Statement, the Company shall cause the Indenture to be qualified under the Trust
Indenture Act; in connection with such qualification, the Company shall
cooperate with the Trustee under the Indenture and the Holders (as defined in
the Indenture) to effect such changes to the Indenture as may be required for
such Indenture to be so qualified in accordance with the terms of the Trust
Indenture Act; and the Company shall execute, and shall use all reasonable
efforts to cause the Trustee to execute, all documents that may be required to
effect such changes and all other forms and documents required to be filed with
the Commission to enable such Indenture to be so qualified in a timely manner.
In the event that any such amendment or modification referred to in this Section
3(m) involves the appointment of a new trustee under the Indenture, the Company
shall appoint a new trustee thereunder pursuant to the applicable provisions of
the Indenture.

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         (n) In the event of an underwritten offering conducted pursuant to
Section 6 hereof, the Company shall, if requested, promptly include or
incorporate in a Prospectus supplement or post-effective amendment to the Shelf
Registration Statement such information as the Managing Underwriters reasonably
agree should be included therein and to which the Company does not reasonably
object and shall make all required filings of such Prospectus supplement or
post-effective amendment as soon as practicable after it is notified of the
matters to be included or incorporated in such Prospectus supplement or
post-effective amendment.

         (o) The Company and the Guarantors shall enter into such customary
agreements (including an underwriting agreement in customary form in the event
of an underwritten offering conducted pursuant to Section 6 hereof) and take all
other appropriate action in order to expedite and facilitate the registration
and disposition of the Registrable Securities, and in connection therewith, if
an underwriting agreement is entered into, cause the same to contain
indemnification provisions and procedures substantially identical to those set
forth in Section 5 hereof with respect to all parties to be indemnified pursuant
to Section 5 hereof.

         (p) The Company shall:

             (i)(A) make reasonably available for inspection by the Electing
         Holders, any underwriter participating in any disposition pursuant to
         the Shelf Registration Statement, and any attorney, accountant or other
         agent retained by such Electing Holders or any such underwriter all
         relevant financial and other records, pertinent corporate documents and
         properties of the Company and its subsidiaries, and (B) cause the
         Company's officers, directors and employees to supply all information
         reasonably requested by such Electing Holders or any such underwriter,
         attorney, accountant or agent in connection with the Shelf Registration
         Statement, in each case, as is customary for similar due diligence
         examinations; provided, however, that all records, information and
         documents that are designated in writing by the Company, in good faith,
         as confidential shall be kept confidential by such Electing Holders and
         any such underwriter, attorney, accountant or agent, unless such
         disclosure is made in connection with a court proceeding or required by
         law, or such records, information or documents become available to the
         public generally or through a third party without an accompanying
         obligation of confidentiality; and provided further that, if the
         foregoing inspection and information gathering would otherwise disrupt
         the Company's conduct of its business, such inspection and information
         gathering shall, to the greatest extent possible, be coordinated on
         behalf of the Electing Holders and the other parties entitled thereto
         by one counsel designated by and on behalf of the Electing Holders and
         other parties;

             (ii)   in connection with any underwritten offering conducted
         pursuant to Section 6 hereof, make such representations and warranties
         to the Electing Holders participating in such underwritten offering and
         to the Managing Underwriters, in form, substance and scope as are
         customarily made by issuers to underwriters in primary underwritten
         offerings of equity and convertible debt securities and covering
         matters including, but not limited to, those set forth in the Purchase
         Agreement;

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             (iii) in connection with any underwritten offering conducted
         pursuant to Section 6 hereof, obtain opinions of counsel to the Company
         (which counsel and opinions (in form, scope and substance) shall be
         reasonably satisfactory to the Managing Underwriters) addressed to each
         Electing Holder participating in such underwritten offering and the
         underwriters, covering such matters as are customarily covered in
         opinions requested in primary underwritten offerings of equity and
         convertible debt securities and such other matters as may be reasonably
         requested by such Electing Holders and underwriters (it being agreed
         that the matters to be covered by such opinions shall include, without
         limitation, a statement by such counsel that it has no reason to
         believe that, as of the date of the opinion and as of the Effective
         Time of the Shelf Registration Statement or most recent post-effective
         amendment thereto, as the case may be, the Shelf Registration Statement
         or the Prospectus, including the documents incorporated by reference
         therein (other than the financial statements therein, as to which such
         counsel need express no opinion), contained or contains, as the case
         may be, an untrue statement of a material fact or omitted or omits, as
         the case may be, a material fact required to be stated therein or
         necessary to make the statements therein not misleading);

             (iv)  in connection with any underwritten offering conducted
         pursuant to Section 6 hereof, obtain "cold comfort" letters and updates
         thereof from the independent public accountants of the Company (and, if
         necessary, from the independent public accountants of any subsidiary of
         the Company or of any business acquired by the Company for which
         financial statements and financial data are, or are required to be,
         included in the Shelf Registration Statement), addressed to each
         Electing Holder participating in such underwritten offering (if such
         Electing Holder has provided such letter, representations or
         documentation, if any, required for such cold comfort letter to be so
         addressed) and the underwriters, in customary form and covering matters
         of the type customarily covered in "cold comfort" letters in connection
         with primary underwritten offerings; and

             (v)   in connection with any underwritten offering conducted
         pursuant to Section 6 hereof, deliver such documents and certificates
         as may be reasonably requested by any Electing Holders participating in
         such underwritten offering and the Managing Underwriters, if any,
         including, without limitation, certificates to evidence compliance with
         Section 3(j) hereof and with any conditions contained in the
         underwriting agreement or other agreements entered into by the Company.

         (q) The Company will use its best efforts to cause the Common Stock
issuable upon conversion of the Securities to be listed, subject to notice of
issuance, on the New York Stock Exchange or other stock exchange or trading
system on which the Common Stock primarily trades on or prior to the Effective
Time of the Shelf Registration Statement hereunder.

         (r) In the event that any broker-dealer registered under the Exchange
Act shall be an "affiliate" (as defined in Rule 2720(b)(1) of the NASD Rules (or
any successor provision thereto)) of the Company or has a "conflict of interest"
(as defined in Rule 2720(b)(7) of the NASD Rules (or any successor provision
thereto)) and such broker-dealer shall underwrite, participate as a member of an
underwriting syndicate or selling group or assist in the distribution of any
Registrable Securities covered by the Shelf Registration Statement, whether

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as a Holder of such Registrable Securities or as an underwriter, a placement or
sales agent or a broker or dealer in respect thereof, or otherwise, the Company
shall assist such broker-dealer in complying with the requirements of the NASD
Rules, including, without limitation, by (A) engaging a "qualified independent
underwriter" (as defined in Rule 2720(b)(15) of the NASD Rules (or any successor
provision thereto)) to participate in the preparation of the registration
statement relating to such Registrable Securities, to exercise usual standards
of due diligence in respect thereto and to recommend the public offering price
of such Registrable Securities, (B) indemnifying such qualified independent
underwriter to the extent of the indemnification of underwriters provided in
Section 5 hereof, and (C) providing such information to such broker-dealer as
may be required in order for such broker-dealer to comply with the requirements
of the NASD Rules.

         (s) The Company and the Guarantors shall use their best efforts to take
all other steps necessary to effect the registration and facilitate the offering
and sale of the Registrable Securities covered by the Shelf Registration
Statement contemplated hereby.

         4.  Registration Expenses. Except as otherwise provided in Section 3,
the Company shall bear all fees and expenses incurred in connection with the
performance of its obligations under Sections 2, 3 and 6 hereof and shall bear
or reimburse the Electing Holders for the reasonable fees and disbursements of a
single counsel selected by a plurality of all Electing Holders who own an
aggregate of not less than 25% of the Registrable Securities covered by the
Shelf Registration Statement to act as counsel therefor in connection therewith.
Each Electing Holder shall pay all underwriting discounts and commissions and
transfer taxes, if any, relating to the sale or disposition of such Electing
Holder's Registrable Securities pursuant to the Shelf Registration Statement.

         5.  Indemnification and Contribution.

         (a) Indemnification by the Company and the Guarantors. Upon the
registration of the Registrable Securities pursuant to Section 2 hereof, the
Company and the Guarantors, jointly and severally, shall indemnify and hold
harmless each Electing Holder and each underwriter, selling agent or other
securities professional, if any, which facilitates the disposition of
Registrable Securities, and each of their respective officers and directors and
each person who controls such Electing Holder, underwriter, selling agent or
other securities professional within the meaning of Section 15 of the Securities
Act or Section 20 of the Exchange Act (each such person being sometimes referred
to as an "Indemnified Person") against any losses, claims, damages or
liabilities, joint or several, to which such Indemnified Person may become
subject under the Securities Act or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon an untrue statement or alleged untrue statement of a material fact
contained in the Shelf Registration Statement, or any Prospectus contained
therein or furnished by the Company to any Indemnified Person, or any amendment
or supplement thereto, or arise out of or are based upon the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, and the Company hereby
agrees to reimburse such Indemnified Person for any legal or other expenses
reasonably incurred by it in connection with investigating or defending any such
action or claim as such expenses are incurred; provided, however, that neither
the Company nor the Guarantors shall be liable to any such Indemnified Person in
any such case to the extent that any such loss, claim, damage or liability
arises out of

                                       11

<PAGE>

or is based upon an untrue statement or alleged untrue statement or omission or
alleged omission made in such Shelf Registration Statement or Prospectus, or
amendment or supplement, in reliance upon and in conformity with written
information furnished to the Company by such Indemnified Person expressly for
use therein.

         (b) Indemnification by the Electing Holders and any Agents and
Underwriters. Each Electing Holder agrees, as a consequence of the inclusion of
any of such Electing Holder's Registrable Securities in such Shelf Registration
Statement, and each underwriter, selling agent or other securities professional,
if any, which facilitates the disposition of Registrable Securities shall agree,
as a consequence of facilitating such disposition of Registrable Securities,
severally and not jointly, to (i) indemnify and hold harmless the Company, the
Guarantors, their directors, officers who sign any Shelf Registration Statement
and each person, if any, who controls the Company or the Guarantors within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange
Act, against any losses, claims, damages or liabilities to which the Company or
the Guarantors or such other persons may become subject, under the Securities
Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon an untrue statement
or alleged untrue statement of a material fact contained in such Shelf
Registration Statement or Prospectus, or any amendment or supplement, or arise
out of or are based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, in each case to the extent, but only to the extent, that
such untrue statement or alleged untrue statement or omission or alleged
omission was made in reliance upon and in conformity with written information
furnished to the Company by such Electing Holder, underwriter, selling agent or
other securities professional expressly for use therein, and (ii) reimburse the
Company, the Guarantors, their directors, officers who sign any Shelf
Registration Statement and each person, if any, who controls the Company or the
Guarantors within the meaning of either Section 15 of the Securities Act or
Section 20 of the Exchange Act for any legal or other expenses reasonably
incurred by them in connection with investigating or defending any such action
or claim as such expenses are incurred.

         (c) Notices of Claims, Etc. Promptly after receipt by an indemnified
party under subsection (a) or (b) above of notice of the commencement of any
action, such indemnified party shall, if a claim in respect thereof is to be
made against an indemnifying party under this Section 5, notify such
indemnifying party in writing of the commencement thereof; but the omission so
to notify the indemnifying party shall not relieve it from any liability which
it may have to any indemnified party otherwise than under this Section 5. In
case any such action shall be brought against any indemnified party and it shall
notify an indemnifying party of the commencement thereof, such indemnifying
party shall be entitled to participate therein and, to the extent that it shall
wish, jointly with any other indemnifying party similarly notified, to assume
the defense thereof, with counsel satisfactory to such indemnified party (who
shall not, except with the consent of the indemnified party, be counsel to the
indemnifying party), and, after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, such
indemnifying party shall not be liable to such indemnified party under this
Section 5 for any legal expenses of other counsel or any other expenses, in each
case subsequently incurred by such indemnified party, in connection with the
defense thereof other than reasonable costs of investigation. No indemnifying
party shall, without the written consent of the indemnified party, effect the
settlement or compromise of, or consent to the entry of any judgment with
respect to, any pending or threatened action or claim in respect of which

                                       12

<PAGE>

indemnification or contribution may be sought hereunder (whether or not the
indemnified party is an actual or potential party to such action or claim)
unless such settlement, compromise or judgment (i) includes an unconditional
release of the indemnified party from all liability arising out of such action
or claim and (ii) does not include a statement as to, or an admission of, fault,
culpability or a failure to act, by or on behalf of any indemnified party.

         (d) Contribution. If the indemnification provided for in this Section 5
is unavailable to or insufficient to hold harmless an indemnified party under
subsection (a) or (b) above in respect of any losses, claims, damages or
liabilities (or actions in respect thereof) referred to therein, then each
indemnifying party shall contribute to the amount paid or payable by such
indemnified party as a result of such losses, claims, damages or liabilities (or
actions in respect thereof) in such proportion as is appropriate to reflect the
relative fault of the indemnifying party and the indemnified party in connection
with the statements or omissions which resulted in such losses, claims, damages
or liabilities (or actions in respect thereof), as well as any other relevant
equitable considerations. The relative fault of such indemnifying party and
indemnified party shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or omission or
alleged omission to state a material fact relates to information supplied by
such indemnifying party or by such indemnified party, and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The parties hereto agree that it would not be just
and equitable if contribution pursuant to this Section 5(d) were determined by
pro rata allocation (even if the Electing Holders or any underwriters, selling
agents or other securities professionals or all of them were treated as one
entity for such purpose) or by any other method of allocation which does not
take account of the equitable considerations referred to in this Section 5(d).
The amount paid or payable by an indemnified party as a result of the losses,
claims, damages or liabilities (or actions in respect thereof) referred to above
shall be deemed to include any legal or other fees or expenses reasonably
incurred by such indemnified party in connection with investigating or defending
any such action or claim. No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation. The obligations of the Electing Holders and any underwriters,
selling agents or other securities professionals in this Section 5(d) to
contribute shall be several in proportion to the percentage of principal amount
of Registrable Securities registered or underwritten, as the case may be, by
them and not joint.

         (e) Notwithstanding any other provision of this Section 5, in no event
will any (i) Electing Holder be required to undertake liability to any person
under this Section 5 for any amounts in excess of the dollar amount of the
proceeds to be received by such Holder from the sale of such Holder's
Registrable Securities (after deducting any fees, discounts and commissions
applicable thereto) pursuant to the Shelf Registration Statement and (ii)
underwriter, selling agent or other securities professional be required to
undertake liability to any person hereunder for any amounts in excess of the
discount, commission or other compensation payable to such underwriter, selling
agent or other securities professional with respect to the Registrable
Securities underwritten by it and distributed to the public.

         (f) The obligations of the Company and the Guarantors under this
Section 5 shall be in addition to any liability which the Company and the
Guarantors may otherwise have to any Indemnified Person and the obligations of
any Indemnified Person under this Section 5 shall be

                                       13

<PAGE>

in addition to any liability which such Indemnified Person may otherwise have to
the Company, the Guarantors, their directors, officers who sign any Shelf
Registration Statement and each person, if any, who controls the Company or the
Guarantors within the meaning of either Section 15 of the Securities Act or
Section 20 of the Exchange Act. The remedies provided in this Section 5 are not
exclusive and shall not limit any rights or remedies which may otherwise be
available to an indemnified party at law or in equity.

         6.  Underwritten Offering. Any Holder of Registrable Securities who
desires to do so may sell Registrable Securities (in whole or in part) in an
underwritten offering; provided that (i) the Electing Holders of at least
33-1/3% in aggregate principal amount of the Registrable Securities then covered
by the Shelf Registration Statement shall request such an offering and (ii) at
least $33,000,000 aggregate principal amount of Registrable Securities shall be
included in such offering; and provided further that the Company shall not be
obligated to cooperate with more than one underwritten offering during the
Effectiveness Period. Upon receipt of such a request, the Company shall provide
all Holders of Registrable Securities written notice of the request, which
notice shall inform such Holders that they have the opportunity to participate
in the offering. In any such underwritten offering, the investment banker or
bankers and manager or managers that will administer the offering will be
selected by, and the underwriting arrangements with respect thereto (including
the size of the offering) will be approved by, the holders of a majority of the
Registrable Securities to be included in such offering; provided, however, that
such investment bankers and managers and underwriting arrangements must be
reasonably satisfactory to the Company. No Holder may participate in any
underwritten offering contemplated hereby unless (a) such Holder agrees to sell
such Holder's Registrable Securities to be included in the underwritten offering
in accordance with any approved underwriting arrangements, (b) such Holder
completes and executes all reasonable questionnaires, powers of attorney,
indemnities, underwriting agreements, lock-up letters and other documents
required under the terms of such approved underwriting arrangements, and (c) if
such Holder is not then an Electing Holder, such Holder returns a completed and
signed Notice and Questionnaire to the Company in accordance with Section
3(a)(ii) hereof within a reasonable amount of time before such underwritten
offering. The Holders participating in any underwritten offering shall be
responsible for any underwriting discounts and commissions and fees and, subject
to Section 4 hereof, expenses of their own counsel. The Company shall pay all
expenses customarily borne by issuers in an underwritten offering, including but
not limited to filing fees, the fees and disbursements of its counsel and
independent public accountants and any printing expenses incurred in connection
with such underwritten offering. Notwithstanding the foregoing or the provisions
of Section 3(n) hereof, upon receipt of a request from the Managing Underwriter
or a representative of holders of a majority of the Registrable Securities to be
included in an underwritten offering to prepare and file an amendment or
supplement to the Shelf Registration Statement and Prospectus in connection with
an underwritten offering, the Company may delay the filing of any such amendment
or supplement for up to 90 days if the Board of Directors of the Company shall
have determined in good faith that the Company has a bona fide business reason
for such delay.

         7.  Liquidated Damages.

         (a) Pursuant to Section 2(a) hereof, the Company may, upon written
notice to all the Holders, postpone having the Shelf Registration Statement
declared effective for a reasonable period not to exceed 90 days if the Board of
Directors of the Company shall have determined in

                                       14

<PAGE>

good faith that because of valid business reasons (not including avoidance of
the Company's obligations hereunder), including the acquisition or divestiture
of assets, pending corporate developments and similar events, it is in the best
interests of the Company to postpone having the Shelf Registration Statement
declared effective. Notwithstanding any such postponement, if (i) on or prior to
the 90th day following the Closing Date, a Shelf Registration Statement has not
been filed with the Commission or (ii) on or prior to the 180th day following
the Closing Date, such Shelf Registration Statement is not declared effective by
the Commission (each, a "Registration Default"), the Company shall be required
to pay liquidated damages ("Liquidated Damages"), from and including the day
following such Registration Default until such Shelf Registration Statement is
either so filed or so filed and subsequently declared effective, as applicable,
at a rate per annum equal to an additional one-quarter of one percent (0.25%) of
the principal amount of Registrable Securities, to and including the 90th day
following such Registration Default and one-half of one percent (0.5%) thereof
from and after the 91st day following such Registration Default.

         (b) In the event that the Shelf Registration Statement ceases to be
effective (or the Holders of Registrable Securities are otherwise prevented or
restricted by the Company from effecting sales pursuant thereto) (an "Effective
Failure") for more than 30 days, whether or not consecutive, in any 90-day
period, or for more than 90 days, whether or not consecutive, during any 365-day
period, then the Company shall pay Liquidated Damages at a rate per annum equal
to an additional one-half of one percent (0.5%) of the principal amount of
Registrable Securities from the 31st day upon which an Effective Failure occurs
in any 90-day period or from the 91st day upon which an Effective Failure occurs
in any 365-day period, as the case may be, until the earlier of (i) the time the
Shelf Registration Statement again becomes effective or the Holders of
Registrable Securities are again able to make sales under the Shelf Registration
Statement or (ii) the time the Effectiveness Period expires. For the purpose of
determining an Effective Failure, days on which the Company has been obligated
to pay Liquidated Damages in accordance with the foregoing in respect of a prior
Effective Failure within the applicable 90-day or 365-day period, as the case
may be, shall not be included. For purposes of this Section 7(b), the Company
shall not be required to pay Liquidated Damages in respect of any day upon which
an Effective Failure has not occurred.

         (c) Any amounts to be paid as Liquidated Damages pursuant to paragraphs
(a) or (b) of this Section 7 shall be paid semi-annually in arrears, with the
first semi-annual payment due on the first Interest Payment Date (as defined in
the Indenture) following (i) in the case of said paragraph (a), the date of such
Registration Default, or (ii) in the case of said paragraph (b), the 31st day
upon which an Effective Failure occurs in the 90-day period or the 91st day upon
which an Effective Failure occurs in the 365-day period, as the case may be.
Such Liquidated Damages will accrue (1) in respect of the Securities at the
rates set forth in paragraphs (a) or (b) of this Section 7, as applicable, on
the principal amount of the Securities and (2) in respect of the Common Stock
issued upon conversion of the Securities, at the rates set forth in paragraphs
(a) or (b) of this Section 7, as applicable, applied to the Conversion Price (as
defined in the Indenture) at that time.

         (d) Except as provided in Section 8(b) hereof, the Liquidated Damages
as set forth in this Section 7 shall be the exclusive monetary remedy available
to the Holders of Registrable Securities for such Registration Default or
Effective Failure. In no event shall the Company be required to pay Liquidated
Damages in excess of the applicable maximum amount of one-half of one percent
(0.5%) set forth above, regardless of whether one or multiple Registration
Defaults exist.

                                       15

<PAGE>

         8.  Miscellaneous.

         (a) Other Registration Rights. The Company may grant registration
rights that would permit any person that is a third party the right to
piggy-back on any Shelf Registration Statement, provided that if the Managing
Underwriter of any underwritten offering conducted pursuant to Section 6 hereof
notifies the Company and the Electing Holders that the total amount of
securities which the Electing Holders and the holders of such piggy-back rights
intend to include in any Shelf Registration Statement is so large as to
materially threaten the success of such offering (including the price at which
such securities can be sold), then the amount, number or kind of securities to
be offered for the account of holders of such piggy-back rights will be reduced
to the extent necessary to reduce the total amount of securities to be included
in such offering to the amount, number and kind recommended by the Managing
Underwriter prior to any reduction in the amount of Registrable Securities to be
included in such Shelf Registration Statement.

         (b) Specific Performance. The parties hereto acknowledge that there
would be no adequate remedy at law if the Company fails to perform any of its
obligations hereunder and that the Purchasers and the Holders from time to time
may be irreparably harmed by any such failure, and accordingly agree that the
Purchasers and such Holders, in addition to any other remedy to which they may
be entitled at law or in equity and without limiting the remedies available to
the Electing Holders under Section 7 hereof, shall be entitled to compel
specific performance of the obligations of the Company under this Registration
Rights Agreement in accordance with the terms and conditions of this
Registration Rights Agreement, in any court of the United States or any State
thereof having jurisdiction.

         (c) Amendments and Waivers. This Agreement, including this Section
8(c), may be amended, and waivers or consents to departures from the provisions
hereof may be given, only by a written instrument duly executed by the Company
and the holders of a majority in aggregate principal amount of Registrable
Securities then outstanding. Each Holder of Registrable Securities outstanding
at the time of any such amendment, waiver or consent or thereafter shall be
bound by any amendment, waiver or consent effected pursuant to this Section
8(c), whether or not any notice, writing or marking indicating such amendment,
waiver or consent appears on the Registrable Securities or is delivered to such
Holder.

         (d) Notices. All notices and other communications provided for or
permitted hereunder shall be given as provided in the Indenture.

         (e) Parties in Interest. The parties to this Agreement intend that all
Holders of Registrable Securities shall be entitled to receive the benefits of
this Agreement and that any Electing Holder shall be bound by the terms and
provisions of this Agreement by reason of such election with respect to the
Registrable Securities which are included in a Shelf Registration Statement. All
the terms and provisions of this Agreement shall be binding upon, shall inure to
the benefit of and shall be enforceable by the respective successors and assigns
of the parties hereto and any Holder from time to time of the Registrable
Securities to the aforesaid extent. In the event that any transferee of any
Holder of Registrable Securities shall acquire Registrable

                                       16

<PAGE>

Securities, in any manner, whether by gift, bequest, purchase, operation of law
or otherwise, such transferee shall, without any further writing or action of
any kind, be entitled to receive the benefits of and, if an Electing Holder, be
conclusively deemed to have agreed to be bound by and to perform all of the
terms and provisions of this Agreement to the aforesaid extent.

         (f) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

         (g) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

         (h) Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York.

         (i) Severability. In the event that any one or more of the provisions
contained herein, or the application thereof in any circumstances, is held
invalid, illegal or unenforceable in any respect for any reason, the validity,
legality and enforceability of any such provision in every other respect and of
the remaining provisions hereof shall not be in any way impaired or affected
thereby, it being intended that all of the rights and privileges of the parties
hereto shall be enforceable to the fullest extent permitted by law.

         (j) Survival. The respective indemnities, agreements, representations,
warranties and other provisions set forth in this Agreement or made pursuant
hereto shall remain in full force and effect, regardless of any investigation
(or any statement as to the results thereof) made by or on behalf of any
Electing Holder, any director, officer or partner of such Holder, any agent or
underwriter, any director, officer or partner of such agent or underwriter, or
any controlling person of any of the foregoing, and shall survive the transfer
and registration of the Registrable Securities of such Holder.

                                       17

<PAGE>

         Please confirm that the foregoing correctly sets forth the agreement
among the Company, the Guarantors and you.

                                               Very truly yours,

                                               Airborne, Inc.

                                               By: /s/ Carl D. Donaway
                                                   -------------------
                                                   Name:  Carl D. Donaway
                                                   Title: CEO

                                               Airborne Express, Inc.

                                               By: /s/ Carl D. Donaway
                                                   -------------------
                                                   Name:  Carl D. Donaway
                                                   Title: CEO

                                               ABX Air, Inc.

                                               By: /s/ Joseph C. Hete
                                                   ------------------
                                                   Name:  Joseph C. Hete
                                                   Title: President & COO

                                               Sky Courier, Inc.

                                               By: /s/ Robert G. Brazier
                                                   ---------------------
                                                   Name:  Robert G. Brazier
                                                   Title: Vice President

                                               Wilmington Air Park, Inc.

                                               By: /s/ Joseph C. Hete
                                                   ------------------
                                                   Name:  Joseph C. Hete
                                                   Title: President

<PAGE>

                                         Airborne FTZ, Inc.

                                         By: /s/ Joseph C. Hete
                                             ------------------
                                             Name:  Joseph C. Hete
                                             Title: President

                                         Aviation Fuel, Inc.

                                         By: /s/ Andrea McClain
                                             ------------------
                                             Name:  Andrea McClain
                                             Title: Vice President

                                         Sound Suppression, Inc.

                                         By: /s/ Amiel M. Kuli
                                             -----------------
                                             Name:  Amiel M. Kuli
                                             Title: President

Accepted as of the date hereof:
Goldman, Sachs & Co.
First Union Securities, Inc.

By: /s/ Goldman, Sachs & Co.
    ------------------------
    (Goldman, Sachs & Co.)

      On behalf of each of the Purchasers

<PAGE>

                                                                      Appendix A

                                 Airborne, Inc.

                         INSTRUCTION TO DTC PARTICIPANTS
                         -------------------------------

                               _____________, 2002

                     URGENT - IMMEDIATE ATTENTION REQUESTED

                             DEADLINE FOR RESPONSE:
                             ----------------------------

                  The Depository Trust Company ("DTC") has identified you as a
DTC Participant through which beneficial interests in the Airborne, Inc. (the
"Company") 5.75% Convertible Senior Notes due April 1, 2007 (the "Securities")
are held.

                  The Company is in the process of registering the Securities
under the Securities Act of 1933 for resale by the beneficial owners thereof. In
order to have their Securities included in the registration statement,
beneficial owners must complete and return the enclosed Notice of Registration
Statement and Selling Security Holder Questionnaire.

                  It is important that beneficial owners of the Securities
                  --------------------------------------------------------
receive a copy of the enclosed materials as soon as possible as their rights to
------------------------------------------------------------
have the Securities included in the registration statement depend upon their
returning the Notice and Questionnaire by __________. Please forward a copy of
the enclosed documents to each beneficial owner that holds interests in the
Securities through you. If you require more copies of the enclosed materials or
have any questions pertaining to this matter, please contact General Counsel,
Airborne, Inc., P.O. Box 662, Seattle, Washington 98111-0662, (206) 285-4600.

                                      A-1

<PAGE>

                                 Airborne, Inc.

                        Notice of Registration Statement
                                       and
                      Selling Security Holder Questionnaire
                      -------------------------------------

                               _____________, 2002

         Airborne, Inc. (the "Company") [has filed] [intends to file] with the
United States Securities and Exchange Commission (the "Commission") a
registration statement on Form S-3 (the "Shelf Registration Statement") for the
registration and resale under Rule 415 of the United States Securities Act of
1933, as amended (the "Securities Act"), of the Company's 5.75% Convertible
Senior Notes due April 1, 2007 (the "Securities") and the shares of common
stock, par value $1.00 per share (the "Common Stock"), issuable upon conversion
thereof, in accordance with the Registration Rights Agreement, dated as of the
date of original issuance of the Securities (the "Registration Rights
Agreement"), among the Company, the guarantor subsidiaries named therein and the
Purchasers named therein. A copy of the Registration Rights Agreement is
attached hereto. All capitalized terms not otherwise defined herein shall have
the meanings ascribed thereto in the Registration Rights Agreement.

         In order to have Registrable Securities included in the Shelf
Registration Statement (or a supplement or amendment thereto), this Notice of
Registration Statement and Selling Security Holder Questionnaire ("Notice and
Questionnaire") must be completed, executed and delivered to the Company at the
address set forth herein for receipt ON OR BEFORE ________________. Beneficial
                                     ------------
owners of Registrable Securities who do not complete, execute and return this
Notice and Questionnaire by such date (i) will not be named as selling security
holders in the Shelf Registration Statement and (ii) may not use the Prospectus
forming a part thereof for resales of Registrable Securities.

         Certain legal consequences arise from being named as a selling security
holder in the Shelf Registration Statement and related Prospectus. Accordingly,
holders and beneficial owners of Registrable Securities are advised to consult
their own securities law counsel regarding the consequences of being named or
not being named as a selling security holder in the Shelf Registration Statement
and related Prospectus.

                                      A-2

<PAGE>

         The term "Registrable Securities" is defined in the Registration Rights
                   ----------------------
Agreement to mean all or any portion of the Securities issued from time to time
under the Indenture in registered form and the shares of Common Stock issuable
upon conversion of such Securities; provided, however, that a security ceases to
                                    --------  -------
be a Registrable Security when it is no longer a Restricted Security. Each
Security is entitled to the benefit of the guarantees provided for in the
Indenture (the "Guarantees") and, unless the context otherwise requires, any
reference herein to a "Security" or a "Registrable Security" shall include a
reference to the related Guarantees.

         The term "Restricted Security" is defined in the Registration Rights
                   -------------------
Agreement to mean any Security or share of Common Stock issuable upon conversion
thereof except any such Security or share of Common Stock which (i) has been
effectively registered under the Securities Act and sold in a manner
contemplated by the Shelf Registration Statement, (ii) has been transferred in
compliance with Rule 144 under the Securities Act (or any successor provision
thereto) or is transferable pursuant to paragraph (k) of such Rule 144 (or any
successor provision thereto), or (iii) has otherwise been transferred and a new
Security or share of Common Stock not subject to transfer restrictions under the
Securities Act has been delivered by or on behalf of the Company in accordance
with Section 3.3 of the Indenture.

                                    ELECTION

         The undersigned holder (the "Selling Security Holder") of Registrable
Securities hereby elects to include in the Shelf Registration Statement the
Registrable Securities beneficially owned by it and listed below in Item (3).
The undersigned, by signing and returning this Notice and Questionnaire, agrees
to be bound with respect to such Registrable Securities by the terms and
conditions of this Notice and Questionnaire and the Registration Rights
Agreement, including, without limitation, Section 5 of the Registration Rights
Agreement, as if the undersigned Selling Security Holder were an original party
thereto.

         Upon any sale of Registrable Securities pursuant to the Shelf
Registration Statement, the Selling Security Holder will be required to deliver
to the Company and the Trustee the Notice of Transfer (completed and signed) set
forth in Exhibit 1 to this Notice and Questionnaire.

         The Selling Security Holder hereby provides the following information
to the Company and represents and warrants that such information is accurate and
complete:

                                      A-3

<PAGE>

                                  QUESTIONNAIRE

(1)  (a) Full Legal Name of Selling Security Holder:
         ______________________________________________________________________
     (b) Full Legal Name of Registered Holder (if not the same as in (a) above)
         of Registrable Securities Listed in Item (3) Below:
         ______________________________________________________________________
     (c) Full Legal Name of DTC Participant (if applicable and if not the same
         as (b) above) Through Which Registrable Securities Listed in Item (3)
         Below are Held:
         ______________________________________________________________________

(2)        Address for Notices to Selling Security Holder:

                                _______________________________________

                                _______________________________________

                                _______________________________________
           Telephone:
                                _______________________________________
           Fax:
                                _______________________________________
           Contact Person:
                                _______________________________________

(3)        Beneficial Ownership of Securities:

           Except as set forth below in this Item (3), the undersigned Selling
           Security Holder does not beneficially own any Securities or shares
           of Common Stock issued upon conversion of any Securities.

     (a)   Principal amount of Registrable Securities (as defined in the
           Registration Rights Agreement) beneficially owned:___________________

           CUSIP No(s). of such Registrable Securities: ________________________

           Number of shares of Common Stock (if any) issued upon conversion of
           Registrable Securities:_____________________________________________

     (b)   Principal amount of Securities other than Registrable Securities
           beneficially owned:__________________________________________________

           CUSIP No(s). of such other Securities:_______________________________

           Number of shares of Common Stock (if any) issued upon conversion of
           such other Securities:_______________________________________________

     (c)   Principal amount of Registrable Securities that the undersigned
           wishes to be included in the Shelf Registration Statement:___________

           _____________________________________________________________________

           CUSIP No(s). of such Registrable Securities to be included in the
           Shelf Registration Statement:________________________________________

                                      A-4

<PAGE>

           Number of shares of Common Stock (if any) issued upon conversion of
           Registrable Securities that are to be included in the Shelf
           Registration Statement:______________________________________________

(4)        Beneficial Ownership of Other Securities of the Company:

           Except as set forth below in this Item (4), the undersigned Selling
           Security Holder is not the beneficial or registered owner of any
           shares of Common Stock or any other securities of the Company, other
           than the Securities and shares of Common Stock listed above in Item
           (3).

           State any exceptions here:

(5)        Relationships with the Company:

           Except as set forth below, neither the Selling Security Holder nor
           any of its affiliates, officers, directors or principal equity
           holders (5% or more) has held any position or office or has had any
           other material relationship with the Company (or its predecessors or
           affiliates) during the past three years.

           State any exceptions here:

(6)        Plan of Distribution:

           Except as set forth below, the undersigned Selling Security Holder
           intends to distribute the Registrable Securities listed above in Item
           (3) only as follows (if at all): Such Registrable Securities may be
           sold from time to time directly by the undersigned Selling Security
           Holder or, alternatively, through underwriters, broker-dealers or
           agents. Such Registrable Securities may be sold in one or more
           transactions at fixed prices, at prevailing market prices at the time
           of sale, at varying prices determined at the time of sale, or at
           negotiated prices. Such sales may be effected in transactions (which
           may involve crosses or block transactions) (i) on any national
           securities exchange or quotation service on which the Registrable
           Securities may be listed or quoted at the time of sale, (ii) in the
           over-the-counter market, (iii) in transactions otherwise than on such
           exchanges or services or in the over-the-counter market, or (iv)
           through the writing of options. In connection with sales of the
           Registrable Securities or otherwise, the Selling Security Holder may
           enter into hedging transactions with broker-dealers, which may in
           turn engage in short sales of the Registrable Securities in the
           course of hedging the positions they assume. The Selling Security
           Holder may also sell Registrable Securities short and deliver
           Registrable Securities to close out such short positions, or loan or
           pledge Registrable Securities to broker-dealers that in turn may sell
           such securities.

           State any exceptions here:

                                      A-5

<PAGE>

                  Note: In no event may such method(s) of distribution take the
form of an underwritten offering of the Registrable Securities without the prior
agreement of the Company.

                  By signing below, the Selling Security Holder acknowledges
that it understands its obligation to comply, and agrees that it will comply,
with the prospectus delivery and other provisions of the Securities Act and the
Exchange Act and the rules and regulations thereunder, particularly Regulation
M.

                  In the event that the Selling Security Holder transfers all or
any portion of the Registrable Securities listed in Item (3) above after the
date on which such information is provided to the Company, the Selling Security
Holder agrees to notify the transferee(s) at the time of the transfer of its
rights and obligations under this Notice and Questionnaire and the Registration
Rights Agreement.

                  By signing below, the Selling Security Holder consents to the
disclosure of the information contained herein in its answers to Items (1)
through (6) above and the inclusion of such information in the Shelf
Registration Statement and related Prospectus. The Selling Security Holder
understands that such information will be relied upon by the Company in
connection with the preparation of the Shelf Registration Statement and related
Prospectus.

                  In accordance with the Selling Security Holder's obligation
under Section 3(a) of the Registration Rights Agreement to provide such
information as may be required by law for inclusion in the Shelf Registration
Statement, the Selling Security Holder agrees to promptly notify the Company of
any inaccuracies or changes in the information provided herein that may occur
subsequent to the date hereof at any time while the Shelf Registration Statement
remains in effect. All notices hereunder and pursuant to the Registration Rights
Agreement shall be made in writing, by hand-delivery, first-class mail, or air
courier guaranteeing overnight delivery as follows:

                  To the Company:           Airborne, Inc.
                                            3101 Western Avenue
                                            P.O. Box 662
                                            Seattle, Washington 98111-0662
                                            Attention: General Counsel

                  Once this Notice and Questionnaire is executed by the Selling
Security Holder and received by the Company, the terms of this Notice and
Questionnaire, and the representations and warranties contained herein, shall be
binding on, shall inure to the benefit of and shall be enforceable by the
respective successors, heirs, personal representatives, and assigns of the
Company and the Selling Security Holder (with respect to the Registrable
Securities beneficially owned by such Selling Security Holder and listed in Item
(3) above). This Agreement shall be governed in all respects by the laws of the
State of New York.

                                      A-6

<PAGE>

                  IN WITNESS WHEREOF, the undersigned, by authority duly given,
has caused this Notice and Questionnaire to be executed and delivered either in
person or by its duly authorized agent.

Dated:_____________________________

                  ______________________________________________________________
                  Selling Security Holder
                  (Print/type full legal name of beneficial owner of Registrable
                  Securities)

                  By:___________________________________________________________
                  Name:
                  Title:

PLEASE RETURN THE COMPLETED AND EXECUTED NOTICE AND QUESTIONNAIRE FOR RECEIPT ON
OR BEFORE __________, _____ TO THE COMPANY AT:

                       Airborne, Inc.
                       3101 Western Avenue
                       P.O. Box 662
                       Seattle, Washington 98111-0662
                       Attention: General Counsel

                                      A-7

<PAGE>

                                                                       Exhibit 1
                                                                   to Appendix A

              NOTICE OF TRANSFER PURSUANT TO REGISTRATION STATEMENT

Airborne,Inc.
3101 Western Avenue
P.O. Box 662
Seattle, Washington 98111-0662
Attention: General Counsel

The Bank of New York
101 Barclay Street
New York, New York 10286
Attention: Corporate Trust Administration
                  Re:      Airborne, Inc. (the "Company")
                           5.75% Convertible Senior Notes due April 1, 2007
                           (the "Notes")

Dear Sirs:

                  Please be advised that _____________________ has transferred
$___________ aggregate principal amount of the above-referenced Notes or shares
of the Company's common stock, issued upon conversion of Notes, pursuant to an
effective Registration Statement on Form S-3 (File No. 333-____) filed by the
Company.

                  We hereby certify that the prospectus delivery requirements,
if any, of the Securities Act of 1933, as amended, have been satisfied with
respect to the transfer described above and that the above-named beneficial
owner of the Notes or common stock is named as a selling security holder in the
Prospectus dated ____________, or in amendments or supplements thereto, and that
the aggregate principal amount of the Notes or number of shares of common stock
transferred are [a portion of] the Notes or shares of common stock listed in
such Prospectus as amended or supplemented opposite such owner's name.

Dated:

                                          Very truly yours,

                                          ___________________________
                                          (Name)

                                      By: ___________________________
                                          (Authorized Signature)Exhibit 4.1

                                MALACOLOGY, INC.

                      5% SUBORDINATED CONVERTIBLE DEBENTURE
                              DUE DECEMBER 31, 2002

Number:_________________________________________________

Principal: $____________________________________________

Original Issue Date: ___________________________________

Registered Holder: _____________________________________
                                (name)

         Malacology,  Inc., a Nevada  corporation (the "Company") with principal
offices at World Trade Center,  1101  Channelside  Drive,  Suite 241,  Tampa, FL
33602, for value received,  hereby promises to pay the registered  holder hereof
(the  "Holder")  the  principal  sum set forth above on  December  31, 2002 (the
"Maturity Date"), in such coin or currency of the United States of America as at
the time of  payment  shall be the legal  tender  for the  payment of public and
private  debts,  and to pay  interest,  less any  amounts  required by law to be
deducted or  withheld,  computed on the basis of a 365-day  year,  on the unpaid
principal  balance hereof from the date hereof (the "Original  Issue Date"),  at
the rate of 5% per year,  until such  principal  sum shall  have  become due and
payable,  or has been  converted  by the Holder  pursuant  to Section 6,  below.
Interest  payments will be made at the option of the Holder in either cash or in
such number of shares of the Company's  common stock,  $.001 par value  ("Common
Stock"),  computed in  accordance  with Section 5.2 below and shall be paid,  on
December 31, 2001 and quarterly  thereafter until Maturity,  or if the principal
of the Debenture is earlier  converted,  upon conversion  pursuant to Section 6,
below. All references herein to dollar amounts refers to U.S. dollars.

         By acceptance and purchase of this  Debenture,  the  registered  holder
hereof  agrees  with the  Company  that the  Debenture  shall be  subject to the
following terms and conditions:

         1.  Authorization  of Debentures.  The Company has authorized the issue
and sale of its 5% Senior Subordinated  Convertible  Debentures due December 31,
2002 (the  "Debenture," such term includes any debentures which may be issued in
exchange or in  replacement  thereof) in the aggregate  principal  amount of not
more than U.S. $10,000.

         2. Transfer or Exchange.  Prior to due  presentation to the Company for
transfer of this  Debenture,  the Company and any agent of the Company may treat
the person in whose name this  Debenture  is duly  registered  on the  Company's
Debenture  Register as the owner hereof for the purpose of receiving  payment as
herein provided and for all other purposes.

<PAGE>

         3. Prepayment; Payment of Interest in Shares.

                  3.1 Optional Prepayment of Debenture.  Subject to the Holder's
right to convert  set forth in  Section 4,  below,  the  Company  may prepay the
Debenture on ten days prior written notice.

                  3.2 Payment of Interest in Shares.  Prior to the conversion of
the principal amount of the Debenture,  the Company will issue to the Holder, at
the Holder's option, in lieu of cash interest, shares of Common Stock calculated
in accordance with the following formula (the "Conversion Rate"):

                  Interest Shares = (.05 x *Principal) / Conversion Price, where

          *Principal = the Principal Amount of the Debenture, and

          *Conversion Price = $.001

         4. Conversion of Debentures.

                  4.1 Conversion of the Debenture.

                  (a)      Right  to  Convert.  Subject  to  the  provisions  of
                           paragraph  4.1(b),  below,  the record holder of this
                           Debenture shall be entitled,  on or after the Date of
                           Original  Issuance,  at the option of the Holder,  to
                           convert  this  Debenture,  in whole or in part,  into
                           fully paid and non-assessable shares of the Company's
                           Common Stock at the rate of $.001 per share.

                  (b)      Maximum Conversion.  The Holder shall not be entitled
                           to  convert  on any  single  day that  amount  of the
                           Debenture in connection with that number of shares of
                           Common  Stock  which would be in excess of the sum of
                           (i) the number of shares of Common Stock beneficially
                           owned by the Holder and its affiliates,  and (ii) the
                           number of shares of Common  Stock  issuable  upon the
                           conversion of the Debenture with respect to which the
                           determination of this provision is being made on such
                           day,  which would result in  beneficial  ownership by
                           the Holder and its  affiliates  of more than 4.99% of
                           the outstanding shares of Common Stock of the Company
                           on such day. For the purposes of the provision to the
                           immediately preceding sentence,  beneficial ownership
                           shall be determined in accordance  with Section 13(d)
                           of the  Securities  Exchange Act of 1934, as amended,
                           and  Regulation  13d-3  thereunder.  Subject  to  the
                           foregoing,   the  Holder  shall  not  be  limited  to
                           aggregate conversions of only 4.99%. Upon an Event of
                           Default  or upon  receipt  of  written  notice of the
                           Company's   exercise   of  its   intention   to  make
                           prepayment  under Section 3.1, above,  the Holder may
                           void  the  conversion  limitation  described  in this
                           paragraph  4.1(b).  The Holder may allocate  which of
                           the equity of the Company deemed  beneficially  owned
                           by the Holder  shall be included in the 4.99%  amount
                           described  above and which shall be  allocated to the
                           excess  above  4.99%.

                                       2
<PAGE>

                  4.2 Exercise of Conversion Privilege. In order to exercise the
conversion privilege,  the Holder shall surrender such Debenture,  together with
the Notice of Conversion  annexed hereto as Exhibit 1 appropriately  endorsed to
the  Company at its  principal  office,  accompanied  by  written  notice to the
Company (a) stating that the Holder elects to convert the Debenture or a portion
thereof,  and if a portion,  the amount of such  portion in multiples of $500 in
principal  amount,  and (b) setting  forth the name or names  (with  address) in
which the certificate or  certificates  for shares of Common Stock issuable upon
such  conversion  shall be issued.  Provided the Debenture is received  properly
endorsed promptly by the Company, the date of conversion of such Debenture shall
be  deemed  to be the date of  receipt  of  Notice  of  Conversion,  even if the
Company's  stock  transfer  books are at that time  closed,  and the  converting
Holder shall be deemed to have  become,  on the date of  conversion,  the record
holder of the shares of Common Stock  deliverable upon such  conversion.  If the
Debenture is not received, properly endorsed by the fifth business day following
the date the Company receives Notice of Conversion, the date of conversion shall
be deemed to be the date the  Debenture  is received,  provided  that such later
receipt will not lower the Conversion Price stated in the Notice of Conversion.

                  As soon as reasonably  possible  after the date of conversion,
the Company shall issue and deliver to such  converting  Holder a certificate or
certificates for the number of shares of Common Stock due on such conversion. No
adjustments  in respect of  interest  or cash  dividends  shall be made upon the
conversion of any Debenture or Debentures.

                  Upon  conversion of the  Debenture in part,  the Company shall
execute and deliver to the Holder thereof,  at the expense of the Company, a new
Debenture,  in aggregate  principal  amount equal to the unconverted  portion of
such  Debenture.  such new  Debenture  shall have the same terms and  provisions
other than the principal  amount as the Debenture or Debentures  surrendered for
conversion.

                  4.3 Duration of Conversion  Privilege.  The right to subscribe
for and purchase  shares of Common Stock  pursuant to the  conversion  privilege
granted  herein shall  commence on the  Original  Issue Date and shall expire at
5:00 p.m., New York time on December 31, 2002.

                  4.4 Stock Fully Paid;  Restricted.  The Company  covenants and
agrees that:

                  (a)      all shares  which may be issued upon the  exercise of
                           the conversion  privilege  granted herein will,  upon
                           issuance  in  accordance  with the terms  hereof,  be
                           fully paid,  nonassessable,  and free from all taxes,
                           liens and charges (except for taxes, if any, upon the
                           income  of the  Holder)  with  respect  to the  issue
                           thereof, and that the issuance thereof shall not give
                           rise  to any  preemptive  rights  on the  part of the
                           stockholders;

                  (b)      the failure of the  Company to issue  shares upon the
                           conversion  of the  Debenture  will  cause the holder
                           immediate irreparable harm.

                  4.5 Antidilution Provisions. The following provisions apply to
the Debenture:

                                       3
<PAGE>

                  (a)      In case the Company  shall (i) pay a dividend or make
                           a  distribution  in  shares  of  Common  Stock,  (ii)
                           subdivide its outstanding shares of Common Stock into
                           a greater  number of  shares of Common  Stock,  (iii)
                           combine its outstanding shares of Common Stock into a
                           smaller number of shares of Common Stock, (iv) make a
                           distribution  on its  Common  Stock in  shares of its
                           capital stock other than Common  Stock,  or (v) issue
                           by   reclassification   of  its  Common  Stock  other
                           securities of the Company,  the conversion  privilege
                           of the  Debenture  and the  Conversion  Price then in
                           effect immediately prior thereto shall be adjusted so
                           that the Holder shall be entitled to receive the kind
                           and  number  of  shares  of  Common  Stock  and other
                           securities  of the Company  which it would have owned
                           or would  have been  entitled  to  receive  after the
                           happening of any of the events  described  above, had
                           the Debenture been converted immediately prior to the
                           happening  of such  event  or any  record  date  with
                           respect thereto. Any adjustment made pursuant to this
                           paragraph  (a)  shall  become  effective  immediately
                           after the effective date of such event retroactive to
                           the record date, if any, for such event.

                  (b)      When the  number of  shares  of  Common  Stock or the
                           Conversion Price is adjusted as herein provided,  the
                           Company  shall  cause to be  promptly  mailed  to the
                           Holder by first class mail,  postage prepaid,  notice
                           of such  adjustment or adjustments  and a certificate
                           of a firm of independent public accountants  selected
                           by the Board of  Directors of the Company (who may be
                           the  regular  accountants  employed  by the  Company)
                           setting  forth the  number of shares of Common  Stock
                           and the  Conversion  Price after such  adjustment,  a
                           brief   statement   of  the  facts   requiring   such
                           adjustment   and  the   computation   by  which  such
                           adjustment was made.

                  (c)      For the purpose of this Section 4.5, the term "Common
                           Stock"  shall mean (A) the class of stock  designated
                           as the  Common  Stock of the  Company  at the date of
                           this  Debenture  or (B)  any  other  class  of  stock
                           resulting from successive changes or reclassification
                           of such Common Stock consisting  solely of changes in
                           par value, or from par value to no par value, or from
                           no par value to par  value.  In the event that at any
                           time, as a result of an  adjustment  made pursuant to
                           this Section 4.5, the Holder shall become entitled to
                           receive any securities upon conversion of the Company
                           other  than  shares of Common  Stock  thereafter  the
                           number of such other  securities  and the  Conversion
                           Price  of  such   securities   shall  be  subject  to
                           adjustment from time to time in a manner and on terms
                           as nearly equivalent as practicable to the provisions
                           with  respect to the Common  Stock  contained in this
                           Section 4.5.

                  4.6 No Adjustment for Dividends. Except as provided in Section
4.5, no  adjustment  in respect to any  dividends  paid shall be made during the
term of the Debenture or upon the exercise of the Debenture.

                                       4
<PAGE>

                  4.7  Preservation  of Purchase  Rights  Upon  Reclassification
Consolidation.  etc. In the case of any  consolidation  of the  Company  with or
merger of the Company  into  another  corporation  or in the case of any sale or
conveyance to another  corporation of all or substantially  all of the property,
assets or business of the Company,  the Company or such  successor or purchasing
corporation,  as the case may be,  shall  provide that the Holder shall have the
right  thereafter  upon payment of the  Conversion  Price in effect  immediately
prior to such action to purchase  upon  conversion of the Debenture the kind and
amount of shares and other  securities  and property which the Holder would have
owned  or  have  been   entitled  to  receive   after  the   happening  of  such
consolidation,  merger,  sale or  conveyance  had the Debenture  been  converted
immediately prior to such action.  such agreement shall provide for adjustments,
which shall be as nearly  equivalent as may be  practicable  to the  adjustments
provided  for in this  Section  4. The  provisions  of this  Section  4.7  shall
similarly apply to successive consolidations, mergers, sales or conveyances.

                  4.8 Par Value of Common Stock.  Before taking any action which
would cause an adjustment reducing the Conversion Price below the then par value
of the shares of Common Stock  issuable upon  conversion of the  Debenture,  the
Company will take any corporate action which may, in the opinion of its counsel,
be necessary in order that the Company may validly and legally  issue fully paid
and nonassessable shares of Common Stock at such adjusted Conversion Price.

                  4.9 Statement on Debenture  Certificates.  Irrespective of any
adjustments  in the  Conversion  Price or the number of securities  convertible,
this Debenture certificate or any certificates  hereafter issued may continue to
express the same price and number of securities as are stated in this  Debenture
certificate.  However, the Company may at any time in its sole discretion (which
shall be  conclusive)  make any change in the form of the Debenture  certificate
that it may deem appropriate and that does not affect the substance thereof; and
any  Debenture  certificate  thereafter  issued,  whether upon  registration  or
transfer  of, or in  exchange or  substitution  for,  an  outstanding  Debenture
certificate, may be in the form so changed.

         5. Restrictions on Transferability.  The Debenture and the Common Stock
issuable upon conversion of the Debenture shall not be transferred, hypothecated
or assigned before  satisfaction of the conditions  specified in this Section 5,
which  conditions are intended to ensure  compliance  with the provisions of the
Securities Act with respect to the Transfer of any Debenture or any Common Stock
issuable  upon  conversion  of the  Debenture.  Holder,  by  acceptance  of this
Debenture, agrees to be bound by the provisions of this Section 5.

                  5.1 Restrictive Legend. The Holder by accepting this Debenture
and any Common Stock issuable upon conversion of the Debenture  agrees that this
Debenture  and the  Common  Stock  issuable  upon  conversion  hereof may not be
assigned or otherwise  transferred unless and until (i) the Company has received
an opinion of counsel for the Holder that such  securities  may be sold pursuant
to  an  exemption  from  registration   under  the  Securities  Act  or  (ii)  a
registration statement relating to such securities has been filed by the Company
and declared effective by the Commission.

                                       5
<PAGE>

                  (a)      Each certificate for Common Stock issuable  hereunder
                           shall bear a legend  substantially  worded as follows
                           unless such  securities have been sold pursuant to an
                           effective registration statement under the Securities
                           Act:

                           "The securities  represented by this certificate have
                           not been registered under the Securities Act of 1933,
                           as amended (the "Act") or any state  securities laws.
                           The  securities  may not be offered  for sale,  sold,
                           assigned,    offered,    transferred   or   otherwise
                           distributed  for  value  except  (i)  pursuant  to an
                           effective registration statement under the Act or any
                           state   securities   laws  or  (ii)  pursuant  to  an
                           exemption from  registration  or prospectus  delivery
                           requirements  under the Act or any  state  securities
                           laws in respect of which the Company has  received an
                           opinion of  counsel  satisfactory  to the  Company to
                           such effect."

                  (b)      Except as  otherwise  provided in this Section 5, the
                           Debenture  shall be  stamped or  otherwise  imprinted
                           with a legend in substantially the following form:

                           "This Debenture and the securities represented hereby
                           have not been registered  under the Securities Act of
                           1933, as amended,  or any state  securities  laws and
                           may not be  transferred in violation of such Act, the
                           rules  and   regulations   thereunder  or  any  state
                           securities laws or the provisions of this Debenture."

                  5.2 Notice of  Proposed  Transfers.  Prior to any  Transfer or
attempted  Transfer of any Debenture or any shares of  Restricted  Common Stock,
the Holder shall give five (5) days' prior written notice (a "Transfer  Notice")
to the Company of Holder's  intention to effect such  Transfer,  describing  the
manner and  circumstances of the proposed  Transfer,  and obtain from counsel to
Holder  an  opinion  that  the  proposed  Transfer  of  such  Debenture  or such
Restricted  Common  Stock  may  be  effected  without   registration  under  the
Securities  Act or state  securities  laws.  After the Company's  receipt of the
Transfer Notice and opinion, such Holder shall thereupon be entitled to Transfer
such Debenture or such Restricted  Common Stock, in accordance with the terms of
the  Transfer  Notice.  Each  certificate,  if any,  evidencing  such  shares of
Restricted  Common Stock issued upon such Transfer and the Debenture issued upon
such  Transfer  shall bear the  restrictive  legends  set forth in Section  5.1,
unless in the opinion of such  counsel  such legend is not  required in order to
ensure compliance with the Securities Act.

                  5.3 Termination of Restrictions. Notwithstanding the foregoing
provisions  of Section 5, the  restrictions  imposed  by this  Section  upon the
transferability of the Debentures, the Common Stock issuable upon conversion and
the Restricted Common Stock (or Common Stock issuable upon the conversion of the
Debenture) and the legend  requirements of Section 5.1 shall terminate as to any
particular  Debenture or Restricted  Common Stock (or Common Stock issuable upon
the  conversion of the  Debenture)  (i) when and so long as such security  shall
have been  effectively  registered under the Securities Act and applicable state
securities laws and disposed of pursuant  thereto or (ii) when the Company shall
have received an opinion of counsel that such shares may be transferred  without
registration  thereof under the Securities Act and applicable  state  securities
laws. Whenever the restrictions  imposed by Section 5 shall terminate as to this

                                       6
<PAGE>

Debenture,  as  hereinabove  provided,  the Holder  hereof  shall be entitled to
receive from the Company upon written  request of the Holder,  at the expense of
the  Company,  a new  Debenture  bearing  the  following  legend in place of the
restrictive legend set forth hereon:

                  "THE RESTRICTIONS ON  TRANSFERABILITY  OF THE WITHIN DEBENTURE
                  CONTAINED IN SECTION 5 HEREOF TERMINATED ON ___________, 20__,
                  AND ARE OF NO FURTHER FORCE AND EFFECT."

         All  Debentures  issued  upon  registration  of  transfer,  division or
combination of, or in  substitution  for, any Debenture or entitled to bear such
legend shall have a similar legend endorsed  thereon.  Whenever the restrictions
imposed by this Section  shall  terminate as to any share of  Restricted  Common
Stock, as hereinabove provided,  the holder thereof shall be entitled to receive
from the Company, at the Company's expense, a new certificate  representing such
Common Stock not bearing the restrictive legends set forth in Section 5.1.

                  5.4 Listing on Securities Exchange.  If the Company shall list
any shares of Common Stock on any securities exchange,  it will, at its expense,
list thereon, maintain and, when necessary, increase such listing of, all shares
of Common  Stock  issued  or, to the  extent  permissible  under the  applicable
securities  exchange  rules,  issuable upon the  conversion of this Debenture so
long as any  shares  of Common  Stock  shall be so listed  during  the  Exercise
Period.

         6. Piggyback Registrations. If, at any time, the Company proposes or is
required to register any of its equity  securities or securities  convertible or
exchangeable for equity securities under the Securities Act (other than pursuant
to  registrations  on such form or similar  form(s) solely for  registration  of
securities in connection with an employee benefit plan or dividend  reinvestment
plan or a merger,  consolidation or acquisition) on a registration  statement on
Form S-1, Form SB-2 or Form S-3 (or an equivalent general registration form then
in effect),  whether or not for its own account,  the Company  shall give prompt
written notice of its intention to do so to each of the Holders of record of the
Debentures.  Upon  the  written  request  of any  Holder,  made  within  15 days
following the receipt of any such written  notice  (which  request shall specify
the maximum  number of Common Stock  issuable  upon  conversion of the Debenture
intended  to  be  disposed  of  by  such  Holder  and  the  intended  method  of
distribution  thereof), the Company shall use its best efforts to cause all such
Common Stock, the Holders of which have so requested the  registration  thereof,
to be registered under the Securities Act (with the securities which the Company
at the time proposes to register) to permit the sale or other disposition by the
Holders (in accordance with the intended method of distribution  thereof) of the
Common Stock to be so  registered.  There is no limitation on the number of such
piggyback  registrations pursuant to the preceding sentence which the Company is
obligated to effect.

                  6.1 Abandonment or Delay. If, at any time after giving written
notice of its  intention  to  register  any equity  securities  and prior to the
effective  date of the  registration  statement  filed in  connection  with such
registration,  the Company shall  determine for any reason not to register or to
delay registration of such equity securities,  the Company may, at its election,
give written notice of such  determination to all Holders and (i) in the case of
a determination not to register, shall be relieved of its obligation to register
any Common Stock  issuable upon  conversion of the Debenture in connection  with

                                       7
<PAGE>

such abandoned  registration,  and (ii) in the case of a determination  to delay
such  registration  of its equity  securities,  shall be  permitted to delay the
registration  of  such  Common  Stock  for  the  same  period  as the  delay  in
registering such other equity securities.

                  6.2  Holder's  Right to  Withdraw.  Any Holder  shall have the
right  to  withdraw  its  request  for  inclusion  of its  Common  Stock  in any
registration  statement  pursuant to this Section 6 by giving  written notice to
the Company of its request to withdraw; provided, however, that (i) such request
must  be  made  in  writing  prior  to  the  earlier  of  the  execution  of the
underwriting agreement or the execution of the custody agreement with respect to
such  registration,  and (ii) such  withdrawal  shall be irrevocable  and, after
making such withdrawal,  a Holder shall no longer have any right to include such
Common Stock in the registration as to which such withdrawal was made.

                  6.3 Cutbacks.  If the managing underwriter of any underwritten
offering  shall  inform the  Company by letter of its belief  that the number of
shares of Common  Stock  requested to be included in a  registration  under this
Section 6 would materially adversely affect such offering, then the Company will
include in such registration, first the securities proposed by the Company to be
sold for its own account and,  second the Common Stock issuable upon  conversion
and all other  securities of the Company to be included in such  registration to
the extent of the number and type,  if any,  which the Company is so advised can
be sold in (or during  the time of) such  offering,  pro rata among the  Holders
participating in such offering in accordance with the number of shares of Common
Stock held by each such Holder.

         7.  Fractional  Shares.  No  fractional  shares of Common Stock will be
issued  in  connection  with  any  subscription  hereunder  but in  lieu of such
fractional  shares,  the Company  shall make a cash  payment  therefor  equal in
amount to the product of the  applicable  fraction  multiplied by the Conversion
Price then in effect.

         8.  Subordination.  Any right of the Holder to payment of  principal or
interest from the Company shall be  subordinated to the claims and rights of the
holders of the Senior Debt  ("Senior  Debt  Holders").  "Senior  Debt" means all
Indebtedness  of the Company other than the Debentures,  whether  outstanding on
the date of  execution  of this  Debenture or  thereafter  created,  incurred or
assumed, except (x) any such Indebtedness that by the terms of the instrument or
instruments  by  which  such  Indebtedness  was  created,  assumed  or  incurred
expressly  provides that it (i) is junior in right of payment to the  Debentures
or (ii) ranks pari passu in right of  payment  with the  Debentures  and (y) any
amendments,  modifications  or  supplements  to,  or any  renewals,  extensions,
deferrals,  refinancing and refunding of, any of the foregoing. Any cash payment
of principal or interest to the Holder shall be collected,  enforced or received
by the Holder as trustee for the Senior Debt Holders and paid over to the Senior
Debt Holders. The Holder agrees that in the event of any payment of principal or
interest by the Company to the Holder by reason of any receivership,  insolvency
or bankruptcy  proceeding,  or proceeding for  reorganization or readjustment of
the Company or its properties, or otherwise, then, in any such event, the Senior
Debt Holders shall be preferred in the payment of their claims over the claim of
the  Holder to payment of  principal  or  interest  against  the  Company or its
properties,  and the claims of the Senior Debt  Holders  shall be first paid and

                                       8
<PAGE>

satisfied in full before any payment or  distribution  of any kind or character,
whether in cash or  property,  shall be made to the Holder.  Provided,  however,
that this Section 8 shall not apply to any payment of principal or interest made
to the Holder  while the Company is solvent and not in default  with  respect to
its Senior Debt.

         9.  Replacement  of  Debenture  Certificate.  Upon  receipt of evidence
satisfactory  to the Company of the  certificate  loss,  theft,  destruction  or
mutilation of the Debenture certificate and, in the case of any such loss, theft
or  destruction,  upon  delivery  of a bond  of  indemnity  satisfactory  to the
Company, or, in the case of any such mutilation, upon surrender and cancellation
of  the  Debenture   certificate,   the  Company  will  issue  a  new  Debenture
certificate, of like tenor, in lieu of such lost, stolen, destroyed or mutilated
Debenture certificate.

         10. Covenants of the Company.  So long as any of the Debentures  remain
outstanding, the Company shall:

                  (a)      At all times keep reserved the total number of shares
                           of Common Stock  necessary for the  conversion of all
                           of  the  then  outstanding  Debentures  at  the  then
                           current Conversion Rate;

                  (b)      Not pay any  dividends  in cash  and/or  property  or
                           other  assets of the Company in respect of its Common
                           Stock or otherwise.

                  (c)      Not issue any  debentures  of the Company  other than
                           the  Debentures  unless the rights of the  holders of
                           such debentures are subordinated to the Debentures or
                           pari passu therewith, in which event the terms of the
                           subordination provision shall be similar to the terms
                           set forth in Section 9 of this Debenture;

                  (d)      Not enter into a loan secured by the property  and/or
                           assets of the Company or any of its subsidiaries with
                           (i) any director,  officer or 5%  stockholder  of the
                           Company, (ii) any entity in which a director, officer
                           or 5%  stockholder  has an  interest  as an  officer,
                           director, partner,  beneficiary of a trust or is a 5%
                           or more equity  holder of such  entity,  or (iii) any
                           parent,  spouse,  child or  grandchild of an officer,
                           director or 5%  stockholder of the Company upon terms
                           no less  favorable  to the  Company  than those which
                           could be obtained from an "arms-length" lender; and

                  (e)      Not  redeem,  repurchase  or  otherwise  acquire  any
                           shares  of  the  common  or  preferred  stock  of the
                           Company.

         11. Default.  If any of the following  events (herein called "Events of
Default") shall occur:

                  (a)      if  the  Company  shall  default  in the  payment  or
                           prepayment of any part of the principal of any of the
                           Debentures  after  the  same  shall  become  due  and
                           payable,  whether at  maturity or at a date fixed for
                           prepayment or by acceleration or otherwise,  and such
                           default shall continue for more than 30 days; or

                                       9
<PAGE>

                  (b)      if the  Company  shall  default in the payment of any
                           installment  of interest on any of the Debentures for
                           more than 30 days after the same shall become due and
                           payable; or

                  (c)      if the  Company  shall  make  an  assignment  for the
                           benefit  of  creditors  or shall be unable to pay its
                           debts as they become due; or

                  (d)      if  the  Company   shall   dissolve;   terminate  its
                           existence; become insolvent on a balance sheet basis;
                           commence  a   voluntary   case   under  the   federal
                           bankruptcy  laws or under any other  federal or state
                           law relating to insolvency or debtor's relief; permit
                           the entry of a decree or order for relief against the
                           Company  in an  involuntary  case  under the  federal
                           bankruptcy laws or under any other applicable federal
                           or state  law  relating  to  insolvency  or  debtor's
                           relief;  permit  the  appointment  or  consent to the
                           appointment of a receiver,  trustee,  or custodian of
                           the Company or of any of the Company's property; make
                           an assignment for the benefit of creditors;  or admit
                           in writing to be failing  generally  to pay its debts
                           as such debts become due;

                  (e)      if the Company shall default in the performance of or
                           compliance  with  any  agreement,  condition  or term
                           contained  in  this  Debenture  or any  of the  other
                           Debentures and such default shall not have been cured
                           within 30 days after such default,

                  (f)      Any of the  representations or warranties made by the
                           Company herein, in the Subscription  Agreement, or in
                           any  certificate  or  financial  or other  statements
                           heretofore or hereafter  furnished by or on behalf of
                           the  Company in  connection  with the  execution  and
                           delivery  of  this  Debenture  or  the   Subscription
                           Agreement   shall  be  false  or  misleading  in  any
                           material respect at the time made; or

                  (g)      Any money judgment, writ or warrant of attachment, or
                           similar process not covered by insurance in excess of
                           One  Hundred  Thousand  Dollars   ($100,000)  in  the
                           aggregate  shall  be  entered  or filed  against  the
                           Company or any of its  properties or other assets and
                           shall remain unpaid, unvacated,  unbonded or unstayed
                           for a period  of  thirty  (30)  days or in any  event
                           later  than  ten (10)  days  prior to the date of any
                           proposed sale thereunder; or

then and in any such  event the Holder of this  Debenture  shall have the option
(unless the default shall have  theretofore been cured) by written notice to the
Company to declare the Debenture to be due and payable,  whereupon the Debenture
shall forthwith mature and become due and payable, at the applicable  prepayment
price  on the date of such  notice,  without  presentment,  demand,  protest  or
further notice of any kind, all of which are hereby expressly  waived,  anything
contained in this Debenture to the contrary notwithstanding. Upon the occurrence
of an Event of Default,  the Company  shall  promptly  notify the Holder of this
Debenture in writing setting out the nature of the default in reasonable detail.

                                       10
<PAGE>

         12.  Remedies on Default;  Notice to Other Holders.  In case any one or
more of the Events of Default shall occur, the Holder may proceed to protect and
enforce  his  or her  rights  by a  suit  in  equity,  action  at  law or  other
appropriate  proceeding,  whether,  to the  extent  permitted  by  law,  for the
specific  performance of any agreement of the Company contained herein or in aid
of the exercise of any power granted hereby. If any Holder of one or more of the
Debentures  shall  declare  the same due and  payable  or take any other  action
against  the  Company  in  respect  of an Event of  Default,  the  Company  will
forthwith give written notice to the Holder of this  Debenture,  specifying such
action and the nature of the default alleged.

         13.  Amendments.  With the  consent of the  Holders of more than 50% in
aggregate  principal  amount  of the  Debentures  at the time  outstanding,  the
Company,  when  authorized by a resolution of its Board of Directors,  may enter
into a  supplementary  agreement for the purpose of adding any  provisions to or
changing in any manner or eliminating any of the provisions of this Debenture or
of any  supplemental  agreement  or  modifying  in any  manner  the  rights  and
obligations of the holders of Debentures or Common Stock issued upon  conversion
of  the  Debentures,  and  of the  Company,  provided,  however,  that  no  such
supplemental agreement shall (a) extend the fixed maturity of any Debenture,  or
reduce the principal  amount  thereof,  or reduce the rate or extend the time of
payment of  interest  thereon,  or alter or impair the right to convert the same
into Common  Stock at the rates and upon the terms  provided in this  Debenture,
without the consent of the Holder of each of the Debentures so affected,  or (b)
reduce the aforesaid percentage of Debentures, the Holders of which are required
to consent to any supplemental agreement,  without the consent of the Holders of
all Debentures then outstanding.

         14. Changes,  Waivers.  etc.  Neither this Debenture nor any provisions
hereof may be changed,  waived,  discharged or terminated  orally, but only by a
statement  in  writing  signed by the party  against  which  enforcement  of the
change,  waiver,  discharge  or  termination  is  sought,  except to the  extent
provided in Section 13 of this Debenture.

         16. Entire Agreement.  This Debenture embodies the entire agreement and
understanding  between  the  Holder and the  Company  and  supersedes  all prior
agreements and understandings relating to the subject matter hereof.

         17. Governing Law, Jurisdiction, etc.

                  (a)      It is the  intention  of the parties that the laws of
                           the State of Florida  shall  govern the  validity  of
                           this Debenture, the construction of its terms and the
                           interpretation  of  the  rights  and  duties  of  the
                           parties.

                  (b)      In the case of any dispute, question,  controversy or
                           claim  arising  among the parties  hereto which shall
                           arise out of or in  connection  with this  Debenture,
                           the same shall be submitted to  arbitration  before a
                           panel of three  arbitrators  in  Tampa,  Florida,  in
                           accordance with the rules of the American Arbitration
                           Association. One arbitrator shall be appointed by the
                           party or parties bringing the claims ("Claimant") and

                                       11
<PAGE>

                           one  arbitrator  shall be  appointed  by the party or
                           parties  defending  the  claim  ("Respondent").   The
                           arbitrators   selected  by  such  parties   shall  be
                           selected  within thirty (30) days after  notification
                           by  the  Claimant  to  the  Respondent  that  it  has
                           determined   to  submit   such   dispute,   question,
                           controversy   or  claim  to   arbitration.   The  two
                           arbitrators   so  selected   shall   select  a  third
                           arbitrator   within   thirty   (30)  days  after  the
                           selection of the arbitrator selected by such parties.
                           Should a party  fail to select an  arbitrator  within
                           the specified time period,  or should the arbitrators
                           selected  by the  parties  fail  to  select  a  third
                           arbitrator,  the missing  arbitrator  or  arbitrators
                           shall be  appointed by the Tampa,  Florida  office of
                           the American Arbitration Association. The decision of
                           the panel  shall be final and  binding on the parties
                           and   enforceable   in   any   court   of   competent
                           jurisdiction.  The costs of the  arbitration  will be
                           imposed   upon  the  Claimant   and   Respondent   as
                           determined by the arbitration  panel or, failing such
                           determination,  will be borne equally by the Claimant
                           and the  Respondent.  The  successful  or  prevailing
                           party  or  parties   shall  be  entitled  to  recover
                           reasonable  attorneys  fees in  addition to any other
                           relief to which it may be entitled.

                  (c)      In the event of any dispute, question, controversy or
                           claim  arising  among the parties  hereto which shall
                           arise out of or in  connection  with this  Debenture,
                           the parties shall keep the proceeding related to such
                           controversy  in  strict   confidence  and  shall  not
                           disclose  the nature of said  dispute,  the status of
                           the  proceeding  or  any   testimony,   documents  or
                           information  obtained or  exchanged  in the course of
                           said  proceeding  without the express written consent
                           of all parties to such dispute.

                                                MALACOLOGY, INC.
[Corporate Seal]

                                                By___________________________
                                                   Vivek R. Rao, Chairman/ CEO

Number: ______________________________________

Name of Holder: ______________________________

Principal: $__________________________________

Original Issue Date: _________________________

                                       12
<PAGE>

                                    EXHIBIT 1

                              NOTICE OF CONVERSION

   (To be Executed by the Registered Holder in order to Convert the Debenture)

         The undersigned hereby irrevocably elects to convert $______________ of
the  above  Debenture  No.  _____  into  _________  shares  of  Common  Stock of
Malacology,  Inc. (the "Company")  according to the conditions set forth in such
Debenture, as of the date written below.

         The undersigned  confirms the  representations and warranties set forth
in the Subscription Agreement,  and unless there has been an Event of Default or
the Debenture is called for prepayment, that the undersigned,  together with its
affiliate will not, following this conversion,  beneficially own more than 4.99%
of the outstanding Common Stock of the Company.

                                    __________________________________________
                                    Date of Conversion*

                                    __________________________________________
                                    Applicable Conversion Price

                                    __________________________________________
                                    Signature

                                    __________________________________________
                                    Name

                                    __________________________________________
                                    Address

                                    __________________________________________

*The original  Debenture  and this Notice of Conversion  must be received by the
Company within five business days following the date of Conversion.

                                       13

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