J O HAMBRO CAPITAL MANAGEMENT LTD
SC 13D, 2000-04-13
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<PAGE>

                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

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



                             AIRNET SYSTEMS, INC.
                             --------------------
                               (Name of Issuer)


                    Common Stock, par value $.01 per share
                         (Title of Class of Securities)


                                   009417106
                                (CUSIP Number)


                                    COPY TO:
                                Faith Pengelly
                     J O Hambro Capital Management Limited
                                 10 Park Place
                           London SW1A 1LP, England
                              011-44-171-222-2020
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
                                Communications)

                                March 24, 2000
           (Dates of Events which Require Filing of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [_]

Note:  Six copies of this statement, including all exhibits, should be filed
with the Commission. See Rule 13d-1(a) for other parties to whom copies are to
be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 2 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      J O Hambro Capital Management Limited
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      England
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             800,800
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          800,800
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      800,800

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                        [_]
12

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      7.0%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IA, CO
- ------------------------------------------------------------------------------

<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 3 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      J O Hambro Capital Management (Holdings) Limited
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      England
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             800,800
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          800,800
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      800,800

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                      [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      7.0%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IA, CO
- ------------------------------------------------------------------------------


<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 4 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      American Opportunity Trust plc
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      England
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             300,000
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          300,000
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      300,000

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                      [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      2.6%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IV, CO
- ------------------------------------------------------------------------------


<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 5 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      Christopher Harwood Bernard Mills
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      England
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             800,800
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          800,800
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      800,000

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                      [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      7.0%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IN
- ------------------------------------------------------------------------------


<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 6 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      Oryx International Growth Fund Limited
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Guernsey (Channel Islands)
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             150,000
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          150,000
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      150,000

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                      [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      1.3%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IV, CO
- ------------------------------------------------------------------------------


<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 810022301                                       Page 7 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      Consulta (Channel Islands) Limited
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Guernsey (Channel Islands)
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             150,000
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          150,000
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      150,000

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                      [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      1.3%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IA, CO
- ------------------------------------------------------------------------------

<PAGE>

- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 8 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      Trident North Atlantic Fund
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Cayman Islands
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             50,000
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          50,000
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      50,000

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                      [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.3%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IV, CO
- ------------------------------------------------------------------------------

<PAGE>


- ---------------------            SCHEDULE 13D             -------------------
CUSIP No. 009417106                                       Page 9 of 50 Pages
- ---------------------                                     -------------------

- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSONS
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

      Premier North Atlantic
      No IRS Identification Number

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4
       WC
- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEM 2(d) or 2(e)                                              [_]
 5
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6
      Luxembourg
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7
     NUMBER OF
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8

     OWNED BY             9,700
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9
    REPORTING
                          0
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          9,700
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
      9,700

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
12                                                                       [_]

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
      0.1%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON
14
      IV, CO
- ------------------------------------------------------------------------------

<PAGE>

Item 1.   Security Issuer.

     The class of equity securities to which this Statement on Schedule 13D (the
"Statement") relates is the Common Stock, par value $.01 per share (the "Common
Stock") of Airnet Systems, Inc., an Ohio corporation (the "Issuer"). The
principal executive offices of the Issuer are located at 3939 International
Gateway, Columbus, Ohio 43219.

Item 2.    Identity and Background.

          2 (a-c,f).

          I.  Filing Parties:
              --------------

     This Statement is filed on behalf of the following eight persons, who are
collectively referred to as the "Filing Parties":

1.   J O Hambro Capital Management (Holdings) Limited ("Holdings") is a
     corporation organized under the laws of England with its principal office
     and business at 10 Park Place, London SW1A 1LP England. Holdings functions
     as the ultimate holding company for J O Hambro Capital Management Limited.

2.   J O Hambro Capital Management Limited ("J O Hambro Capital Management"),
     formerly named J O Hambro & Partners Limited, is a corporation organized
     under the laws of England with its principal office and business at 10 Park
     Place, London SW1A 1LP England. J O Hambro Capital Management is
     principally engaged in the business of investment management and advising.
     It serves as co-investment adviser to NASCIT and as investment adviser to
     Oryx as well as private clients.

3.   Christopher Harwood Bernard Mills is a British citizen whose business
     address is 10 Park Place, London SW1A 1LP England. His principal employment
     includes service as executive director of NASCIT, as a director of J O
     Hambro Capital Management and Oryx, and as co-investment adviser to NASCIT.

4.   American Opportunity Trust plc ("American Opportunity Trust"), formerly
     named Leveraged Opportunity Trust plc, is a corporation organized under the
     laws of England with its principal office and business at 10 Park Place,
     London SW1A 1LP England. American Opportunity Trust is a publicly-held
     investment trust company. Christopher Harwood Bernard Mills and J O Hambro
     Capital Management serve as co-investment advisers to American Opportunity
     Trust.

5.   Oryx International Growth Fund Limited ("Oryx") is a corporation organized
     under the laws of the Island of Guernsey with its principal office and
     business at Bermuda House, St. Julian's Avenue, St. Peter Port, Guernsey.
     Oryx is a closed-end investment

                              Page 10 of 50 Pages
<PAGE>

     company. J O Hambro Capital Management and Consulta serve as investment
     advisers to Oryx.

6.   Consulta (Channel Islands) Limited ("Consulta") is a corporation organized
     under the laws of the Island of Guernsey with its principal office and
     business at Bermuda House, St. Julian's Avenue, St Peter Port, Guernsey.
     Consulta is principally engaged in the business of investment management
     and advising and serving as investment manager of Oryx.

7.   The Trident North Atlantic Fund ("Trident North Atlantic") is an open-ended
     investment Company incorporated in the Cayman Islands with its principal
     office and business at P. O. Box 309, Ugland House, George Town, Grand
     Cayman, Cayman Islands. Trident North Atlantic is a publicly-held regulated
     Mutual Fund. Christopher Harwood Bernard Mills serves as a director of
     Trident North Atlantic and J O Hambro Capital Management serves as an
     investment adviser to Trident North Atlantic.

8.   Premier North Atlantic ("Premier") is a sub-fund of Premier International
     Investments, an open-ended investment company incorporated in Luxembourg
     with its principal offices at European Bank and Business Centre, 6D route
     de Treves, L-2633, Luxembourg. J O Hambro Capital Management Limited is
     investment advisor to the fund.

II.  Control Relationships:
     ---------------------

     J O Hambro Capital Management is a wholly owned subsidiary of J O Hambro
Capital Management (Holdings) Limited.

III.  Executive Officers and Directors:
      --------------------------------

     In accordance with the provisions of General Instruction C to Schedule 13D,
information concerning the executive officers and directors of the Filing
Parties is included in Schedule A hereto and is incorporated by reference
herein.

     (d)  Criminal Proceedings
          --------------------

     During the last five years, neither the Filing Parties (or a controlling
entity thereof) nor any executive officer or director of any of the Filing
Parties (or a controlling entity thereof) has been convicted in a criminal
proceeding (excluding traffic violations or similar misdemeanors).

     (e)  Civil Securities Law Proceedings
          --------------------------------

     During the last five years, neither the Filing Parties (or a controlling
entity thereof) nor any executive officer or director of any of the Filing
Parties (or a controlling entity thereof) has been a party to a civil proceeding
of a judicial or administrative body of competent jurisdiction and as a result
of such proceeding was or is subject to a judgment, decree or final order
enjoining future violations of, or prohibiting or mandating activities subject
to, federal or state securities laws or finding any violation with respect to
such laws.

                              Page 11 of 50 Pages
<PAGE>

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

         The Filing Parties used their working capital funds to purchase the
shares of Common Stock of the Company (the "Shares") to which this statement
relates.

         The amount of funds used to date to acquire the Shares is approximately
$5,943,139 (exclusive of brokerage fees and commissions).

Item 4.   Purpose of Transaction.

         The Reporting Person has no present plans or proposals which relate to
or would result in any of the actions specified in clauses (a) through (j) of
Item 4 of Schedule 13D.

Item 5.   Interest in Securities of the Issuer.

         (a)-(b) The aggregate number and percentage of the outstanding Common
Stock of the Company beneficially owned (i) by each of the Filing Parties, and
(ii) to the knowledge of the Filing Parties, by each other person who may be
deemed to be a member of the Group, is as follows:

<TABLE>
<CAPTION>
                                                                                    Number of
                                                                     Number of       Shares:
                                                    Number of         Shares:        Sole or
                                  Aggregate         Shares: Sole      Shared         Shared
           Filing                 Number of           Power to       Power to       Power to     Approximate
           Party                  Shares:               Vote            Vote        Dispose      Percentage*
- ---------------------------     -------------     -------------     -----------    ----------   ------------
<S>                             <C>               <C>               <C>            <C>          <C>
Holdings                           800,800               0             800,800       800,800           7.0%
J O Hambro                         800,800               0             800,800       800,800           7.0%
Capital Management
Christopher H.B. Mills             800,800               0             800,800       800,800           7.0%
American Opportunity Trust         300,000               0             300,000       300,000           2.6%
Oryx                               150,000               0             150,000       150,000           1.3%
Consulta                           150,000               0             150,000       150,000           1.3%
Trident North Atlantic              50,000               0              50,000        50,000           0.3%
Premier                              9,700               0               9,700         9,700           0.1%
- -------------------------------------------------------------------------------------------------------------
</TABLE>

     *  Based on 11,393,362 shares of Common Stock, par value $.10 per share,
outstanding as of March 3, 2000, which is based on information reported in the
Company's Annual Report on Form 10-K for the fiscal year ended December 31,
1999.

     (c) In the 60 days prior to the date of the filing of this Statement, the
Filing Parties effected no transactions in the Common Stock other than those set
forth in the following table:

                              Page 12 of 50 Pages
<PAGE>

<TABLE>
<CAPTION>
              Airnet Systems, Inc.                       Trades in 60 days prior to filing

                                                                       Price              Broker
Date          Filing Party                        No of shares         (US$)

<S>           <C>                                 <C>                  <C>             <C>
02/28/00      J O Hambro Capital Management           115,000            3.1           Raymond James

02/10/00      Trident North Atlantc                       700            5.13          Raymond James
2/28/00       Trident North Atlantic                    5,500            5.94          Raymond James

2/28/00       J O Hambro Capital Management          (120,500)           4.94          Raymond James
13/03/00      J O Hambro Capital Management             3,400            5.4           Raymond James
14/03/00      J O Hambro Capital Management             1,400            5.63          Raymond James
15/03/00      J O Hambro Capital Management            19,200            5.75          Raymond James
</TABLE>

          All of the above transactions were effected in the open market and
were purchases except for the transaction on February 28, 2000 (for 120,500
shares), which was a sale.

          (d) The private clients of J O Hambro Capital Management have an
economic interest in the dividends from, and the proceeds of sales of, Common
Stock beneficially owned by J O Hambro Capital Management. The shareholders of
American Opportunity Trust have an economic interest in the dividends from, and
the proceeds of sales of, Common Stock beneficially owned by American
Opportunity Trust.

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

        As co-investment advisers to American Opportunity Trust, Christopher
Harwood Bernard Mills and J O Hambro Capital Management share the right to
transfer and vote the shares of Common Stock of the Company pursuant to an
agreement dated as of January 7, 1993 between American Opportunity Trust and J O
Hambro Capital Management.

Item 7.   Material to be Filed as Exhibits.

        The following documents are filed herewith:

        (a)    Administration, Management and Custody Management Agreement dated
               as of January 7, 1993 between J O Hambro Capital Management
               (formerly named J O Hambro & Partners Limited) and American
               Opportunity Trust.

        (b)    Power of Attorney of Christopher Harwood Bernard Mills dated July
               9, 1997.

        (c)    Joint Filing Agreement dated April 13, 2000 among J O Hambro
               Capital Management (Holdings) Limited, J O Hambro Capital
               Management Limited, American Opportunity Trust plc, Christopher
               Mills, The Trident North Atlantic Fund, Oryx International Growth
               Fund Limited, Consulta (Channel Islands) Limited and Premier
               North Atlantic.

                              Page 13 of 50 Pages
<PAGE>

                                   SIGNATURES

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

Dated:  April 13, 2000

                             J O HAMBRO CAPITAL MANAGEMENT LIMITED



                             By: /s/ R. G. Barrett
                                -----------------------
                                Name: R.G. Barrett
                                Title:  Director
                                Executed on behalf of the parties hereto
                                pursuant to the Joint Filing Agreement filed
                                herewith.

                              Page 14 of 50 Pages
<PAGE>

                                  Schedule A



The following table sets forth certain information concerning each of the
directors and executive officers of J O Hambro Capital Management (Holdings)
Limited ("Holdings") as of the date hereof.


Name:                                  James Daryl Hambro
                                       (Chairman)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Chairman, J O Hambro Capital Management
                                       Limited


 Name:                                 Christopher Harwood Bernard Mills
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Executive Director, NASCIT
                                       Executive Director, American Opportunity
                                       Trust
                                       Director, J O Hambro Capital Management
                                       Limited

Name:                                  Nichola Pease
                                       (Director and Chief Executive)

Citizenship:                           British

                              Page 15 of 50 Pages
<PAGE>

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director and Chief Executive, J O
                                       Hambro Capital Management Limited

Name:                                  Basil Postan
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management
                                       Limited

Name:                                  Malcolm Robert King
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management
                                       Limited

Name:                                  Lisa Marie Rowland
                                       (Director)

Citizenship:                           American

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

                              Page 16 of 50 Pages
<PAGE>

Principal Occupation:                  Director, J O Hambro Capital Management
                                       Limited

Name:                                  Robert George Barrett
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management
                                       Limited

Name:                                  Claudia Margaret Cecil Perkins
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management
                                       Limited

                              Page 17 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
directors and executive officers of J O Hambro Capital Management Limited ("J O
Hambro Capital Management") as of the date hereof.

Name:                                  James Daryl Hambro
                                       (Managing Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Managing Director, J O Hambro Capital
                                       Management Limited

Name:                                  Christopher Harwood Bernard Mills
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Executive Director, NASCIT
                                       Executive Director, American Opportunity
                                       Trust
                                       Director, J O Hambro Capital Management

Name:                                  Claudia Margaret Cecil Perkins
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management


                              Page 18 of 50 Pages
<PAGE>

Name:                                  Malcolm Robert King
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management


Name:                                  Nichola Pease
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director and Chief Executive, J O Hambro
                                       Capital Management

Name:                                  Basil Postan
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management

Name:                                  Lisa Marie Rowland
                                       (Director)

Citizenship:                           American

                              Page 19 of 50 Pages
<PAGE>

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management

Name:                                  Robert George Barrett
                                       (Director)

Citizenship:                           British


Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Director, J O Hambro Capital Management

                              Page 20 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
directors and executive officers of American Opportunity Trust plc ("American
Opportunity Trust") as of the date hereof.

Name:                                  R. Alexander Hammond-Chambers
                                       (Chairman)

Citizenship:                           British

Business Address:                      29 Rutland Square
                                       Edinburgh
                                       EH1 2BW

Principal Occupation:                  Non-executive director

Name:                                  Christopher Harwood Bernard Mills

Citizenship:                           British

Business Address:                      10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Executive Director, American Opportunity
                                       Trust
                                       Executive Director, NASCIT
                                       Director, J O Hambro Capital Management


Name:                                  John Gildea
                                       (Director)

Citizenship:                           USA

Business Address:                      Gildea Management Company/1/
                                       115 East Putnam Avenue
                                       3rd Floor
                                       Greenwich, Connecticut 06830

Principal Occupation:                  President, Gildea Management Company


________________________________

     /1/  Gildea Management Company is principally engaged in the investment
management business.

                              Page 21 of 50 Pages
<PAGE>

Name:                                  The Hon. James J. Nelson
                                       (Director)
Citizenship:                           British

Business Address:                      Foreign & Colonial Ventures/2/
                                       4th Floor
                                       Berkeley Square House
                                       Berkeley Square
                                       London W1X 5PA
                                       England
Principal Occupation:                  Director, Foreign & Colonial Ventures

Name:                                  Iain Tulloch
                                       (Director)

Citizenship:                           British

Business Address:                      Murray Johnstone Ltd./3/
                                       7 West Nile Street
                                       Glasgow G2 2PX
                                       Scotland

Principal Occupation:                  Director, Murray Johnstone Ltd.

Name:                                  Philip Ehrman
                                       (Director)
Citizenship:                           British


____________________________

     /2/  Foreign & Colonial Ventures is principally engaged in the investment
management business.

     /3/  Murray Johnstone Ltd. is principally engaged in the investment
management business.

                              Page 22 of 50 Pages
<PAGE>

Business Address:                      Gartmore Investment Management Ltd./4/
                                       Gartmore House
                                       16-18 Monument Street
                                       London EC3R 8AJ
                                       England

Principal Occupation:                  Investment Manager, Gartmore Investment
                                       Management Ltd.


__________________

     /4/ Gartmore Investment Management Limited is principally engaged in the
investment management business.

                              Page 23 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
directors and executive officers of Oryx International Growth Fund Limited
("Oryx") as of the date hereof.

Name:                                  Nigel Kenneth Cayzer
                                       (Chairman)

Citizenship:                           British

Business Address:                      Kinpurnie Estate
                                       Smiddy Road
                                       Newtyle
                                       Perthshire
                                       PH12 8TB

Principal Occupation:                  Non-executive director


Name:                                  His Excellency Salim Hassan Macki
                                       (Director)

Citizenship:                           Omani

Business Address:                      P.O. Box 4160
                                       Postal Code 112
                                       Ruwi
                                       Sultanate of Oman

Principal Occupation:                  Non-executive director


Name:                                  Patrick John McAfee
                                       (Director)

Citizenship:                           British

Business Address:                      Deutche, Morgan Grenfell/5/
                                       4 Eagle Valley
                                       Power Court
                                       Ennis Kerry County
                                       Wicklow
                                       Ireland

___________________________

     /5/ Deutche, Morgan Grenfell is a merchant bank.

                              Page 24 of 50 Pages
<PAGE>

Principal Occupation:                  Company Director


Name:                                  Christopher Harwood Bernard Mills
                                       (Director)

Citizenship:                           British

Business Address:                      10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Executive Director, NASCIT
                                       Executive Director, American Opportunity
                                       Trust
                                       Director, J O Hambro & Partners
                                       Director, Oryx

Name:                                  Harald Lungershausen
                                       (Director)

Citizenship:                           German

Business Address:                      Seestrasse 240
                                       P.O. Box 0802
                                       Kilchberg
                                       Zurich
                                       Switzerland

Principal Occupation:                  Company Director


Name:                                  Mohamed Hassan Ghurlam Habib
                                       (Director)

Citizenship:                           Omani

Business Address:                      Oman National Insurance Company/6/
                                       PO Box 2254
                                       Postal Code 112
                                       Ruwi
                                       Sultanate of Oman
____________________________

     /6/ Oman National Insurance Company is principally engaged in the insurance
business.

                              Page 25 of 50 Pages
<PAGE>

Principal Occupation:                  Chief Executive, Oman National Insurance
                                       Company, SAOG


Name:                                  Rupert Arthur Rees Evans
                                       (Director)

Citizenship:                           British

Business Address:                      Ozannes/7/
                                       PO Box 186
                                       1 Le Marchant Street
                                       St. Peter Port
                                       Guernsey
                                       Channel Islands

Principal Occupation:                  Guernsey Advocate
                                       Partner, Ozanne van Leuven Perrot & Evans


Name:                                  Hussan Al Nowais

Citizenship:                           United Arab Emirates

Business Address:                      Emirate Holdings
                                       P.O. Box 984
                                       Abu Dhabi
                                       United Arab Emirates

Principal Occupation:                  Chairman and Managing Director, Emirate
                                       Holdings


_________________________

     /7/ Ozannes is a law firm.

                              Page 26 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
directors and executive officers of Consulta (Channel Islands) Limited
("Consulta") as of the date hereof.


Name:                             Gary Michael Brass
                                  (Director)

Citizenship:                      British

Business Address:                 20 St. James's Street
                                  London SW1A 1ES
                                  England

Principal Occupation:             Managing Director, Consulta


Name:                             Jeremy Caplan
                                  (Director)

Citizenship:                      British

Business Address:                 1 Britannia Place
                                  Bath Street
                                  St. Helier
                                  Jersey

Principal Occupation:             English Solicitor


Name:                             Barry Carroll
                                  (Director)

Citizenship:                      British

Business Address:                 Management International (Guernsey) Limited/8/
                                  Bermuda House
                                  St. Julian's Avenue
                                  St. Peter Port
                                  Guernsey

Principal Occupation:             Managing Director
                                  Management International (Guernsey) Limited

________________________

          /8/ Management International (Guernsey) Limited is principally engaged
in the investment management business.

                               Page 27 of 50 Pages
<PAGE>

Name:                                  Rupert Arthur Rees Evans
                                       (Director)

Citizenship:                           British

Business Address:                      P.O. Box 186
                                       1 Le Marchant Street
                                       St. Peter Port
                                       Guernsey

Principal Occupation:                  Guernsey Advocate
                                       Partner, Ozanne van Leuven
                                       Perrot & Evans

                               Page 28 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
directors and executive officers of Consulta Limited, the parent of Consulta
(Channel Islands) Limited.

Name:                         Harald Alejandro Lamotte
                              (Director)

Citizenship:                  British

Business Address:             20 St. James's Street
                              London SW1A 1ES
                              England

Principal Occupation:         Investment Fund Manager,
                              Consulta Limited


Name:                         Gary Michael Brass
                              (Director)

Citizenship:                  British

Business Address:             20 St. James's Street
                              London SW1A 1ES
                              England

Principal Occupation:         Investment Fund Manager,
                              Consulta Limited


Name:                         Paul David Ashburner Nix
                              (Director)

Citizenship:                  British

Business Address:             20 St. James's Street
                              London SW1A 1ES

Principal Occupation:         Investment Fund Manager,
                              Consulta Limited

                              Page 29 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
 directors and executive officers of Trident North Atlantic Fund ("Trident North
 Atlantic") as of the date hereof.

Name:                                  Niamh Meenan
                                       (Director)

Citizenship:                           Irish

Business Address:                      RSM Robson Rhodes
                                       Fitzwilton House
                                       Wilton Place
                                       Dublin 2

Principal Occupation:                  Senior Manager, RSM Robson Rhodes


Name:                                  Christopher Harwood Bernard Mills
                                       (Director)

Citizenship:                           British

Business Address:                      J O Hambro Capital Management Limited
                                       10 Park Place
                                       London SW1A 1LP
                                       England

Principal Occupation:                  Executive Director, NASCIT
                                       Executive Director, American Opportunity
                                       Trust
                                       Director, J O Hambro Capital Management
                                       Limited


Name:                                  David Sargison
                                       (Director)

Citizenship:                           British

Business Address:                      Caledonian Bank & Trust Limited
                                       Caledonian House
                                       George Town, Grand Cayman
                                       Cayman Islands

Principal Occupation:                  Managing Director, Caledonian Bank &
                                       Trust Limited

                              Page 30 of 50 Pages
<PAGE>

The following table sets forth certain information concerning each of the
directors and executive officers of Premier North Atlantic ("Premier") as of
the date hereof.


Name:                                  Jonathan P.H. Fry

Citizenship:                           British

Business Address:                      Premier Asst Managment
                                       Chertsey Street
                                       Guilford
                                       Surry
                                       GU1 4HG
                                       England

Principal Occupation:                  Joint Managing Director, Premier House


Name:                                  David G. Smith

Citizenship:                           British

Business Address:                      Clay Consultants
                                       Kurangarira
                                       St. Savior's Hill
                                       St. Saviour
                                       Jersey
                                       Channel Island
                                       JE2 7LG

Principal Occupation:                  Company Director, Clay Consultants


Name:                                  Duncan Smith

Citizenship:                           British

Business Address:                      Cogent Investment Operations
                                       European Bank and Business Centre
                                       6D Route de Treves
                                       L-2633
                                       Luxembourg

                              Page 31 of 50 Pages
<PAGE>

Principal Occupation:                  Operations Director - Cogent Investment
                                       Operations

                              Page 32 of 50 Pages
<PAGE>

                                 Exhibit Index
                                 -------------
Document
- --------

     The following documents are filed herewith:

     (a)  Administration, Management and Custody Management Agreement dated as
          of January 7, 1993 between J O Hambro Capital Management (formerly
          named J O Hambro & Partners Limited) and American Opportunity Trust.

     (b)  Power of Attorney of Christopher Harwood Bernard Mills dated July 9,
          1997.

     (c)  Joint Filing Agreement dated as of April 13, 2000 among J O Hambro
          Capital Management (Holdings) Limited, J O Hambro Capital Management
          Limited, American Opportunity Trust PLC, Christopher Mills, The
          Trident North Atlantic Fund, Oryx International Growth Fund Limited,
          Consulta (Channel Islands) Limited and Premier North Atlantic.

                              Page 33 of 50 Pages

<PAGE>

                          ADMINISTRATION, MANAGEMENT
                             AND CUSTODY AGREEMENT

                                    BETWEEN
                          AMERICAN OPPORTUNITY TRUST
                           AND J O HAMBRO & PARTNERS


                              Page 34 of 50 Pages
<PAGE>

                            Dated 7th January 1993
                            ----------------------


                        LEVERAGED OPPORTUNITY TRUST PLC

                                      and

                         J O HAMBRO & PARTNERS LIMITED



               ADMINISTRATION,  MANAGEMENT AND CUSTODY AGREEMENT



                                 Allen & Overy
                                     London


                              Page 35 of 50 Pages
<PAGE>

THIS AGREEMENT is made on 7th January 1993 BETWEEN:

(1)  LEVERAGED OPPORTUNITY TRUST PLC of 11 Devonshire Square, London EC2M 4YR
     (the "Company"); and
           -------

(2)  J O HAMBRO & PARTNERS LIMITED of 30 Queen Anne's Gate, London SW1H 9AL (the
     "Manager").
      -------

NOW IT IS HEREBY AGREED as follows:

1.  Interpretation
    --------------

(1)  In this Agreement:

     "Board"
      -----

     means the Board of Directors of the Company, or a committee thereof or
     (where the context so admits) a Director of the Company, duly authorized;

     "IMRO"
      ----

     means the Investment Management Regulatory Organization Limited or its
     successors from time to time;

     "IMRO Rules"
      ----------

     means the rules of IMRO from time to time applicable;

     "Investments"
      -----------

     includes any asset, right or interest falling within any paragraph in Part
     I of Schedule I to the Financial Services Act 1986 and any other asset,
     right or interest in respect of property of any kind and, without prejudice
     to the foregoing, wherever situate and whether or not producing income;

     "Portfolio"
      ---------

     means the Investments from time to time owned by the Company;

     "Stock Exchange"
      --------------

     means The International Stock Exchange of the United Kingdom and the
     Republic of Ireland Limited;

                              Page 36 of 50 Pages
<PAGE>

     "subsidiary"
      ----------

     shall have the meaning ascribed thereto by Section 736 of the Companies Act
     1985.

(2)  References to persons include bodies corporate and unincorporated
     associations and references to companies include any bodies corporate.

(3)  Any reference to a statutory provision includes any statutory modification
     or re-enactment of it for the time being in force.

(4)  Subclauses (1) to (3) above apply unless the contrary intention appears.

(5)  The headings in this Agreement do not affect its construction.

(6)  References to amounts payable by the Company shall be exclusive of value
     added tax thereon so that value added tax shall be payable in addition if
     and to the extent chargeable.

2.   Appointment
     -----------

     The Company hereby appoints the Manager to be the investment manager and
     administrator of the Company to provide the services and facilities
     mentioned below with effect from the date of execution of this Agreement,
     such appointment to continue (unless previously terminated under Clause 11
     below) until terminated by either party upon the expiry of not less than
     two years' written notice given to the other.

3.   Investment Management
     ---------------------

(1)  The Manager shall undertake with regard to such Investments as may from
     time to time be notified to and agreed with the Manager (the "Relevant
     Investments"), the duties normally performed by investment managers,
     subject to the policy directions and overall guidelines from time to time
     notified to the Manager by the Board, and in particular but without in any
     way prejudicing the generality of the foregoing shall on behalf of the
     Company:

     (a)  keep under constant review the Relevant Investments from time to time
          held by the Company;

     (b)  be entitled (at its absolute discretion and without obtaining the
          prior written permission of the Company) to withdraw deposits, to
          effect purchases and sales and other transactions in respect of
          Relevant Investments and subscriptions to issues of Relevant
          Investments, to enter into underwriting commitments in relation to
          Relevant Investments on behalf of the Company and otherwise to invest,
          realise and re-invest the Portfolio in relation to Relevant
          Instruments and

                              Page 37 of 50 Pages
<PAGE>

          exercise all rights attaching to Relevant Investments comprised
          therein and in each such case to charge the amounts payable to the
          Portfolio;

     (c)  search out and evaluate investment opportunities in Relevant
          Investments for the Company;

     (d)  analyse the progress of companies in which the Company has made
          Relevant Investments;

     (e)  submit to the Board such reports and information regarding Relevant
          Investments as the Board shall reasonably require; and

     (f)  recommend to the Board any future developments or changes to the
          investment policy of the Company which the Manager may consider to be
          advisable.

(2)  The Board shall procure that Christopher Mills consults with the Manager
     prior to making investment decisions on behalf of the Company relating to
     unlisted investments. If the Manager objects to any such investment
     decisions proposed by Christopher Mills it may notify the Board and the
     Board shall use reasonable endeavours to convene a Board meeting to
     consider the matter prior to the proposed investment decision being
     implemented.

4.   Administration and other facilities
     -----------------------------------

     The Manager shall provide the Company with the following services and
     facilities:

     (a)  office facilities at 30 Queen Anne's Gate, London SW1H 9AL or such
          other office as may be agreed by the Company with the Manager and such
          office shall be used as the registered and principal office of the
          Company and there shall be available there a suitable room (upon the
          giving of not less than five days' prior notice or such shorter notice
          as may be agreed from time to time) for the holding of meetings of the
          Board but nothing in this Agreement shall be construed or have effect
          as constituting the relationship of landlord and tenant between the
          Manger and the Company and the Company shall be a bare licensee of the
          Manager;

     (b)  all financial, accountancy, secretarial, clerical and other
          administrative services of any kind necessary for the conduct of the
          affairs of the Company;

     (c)  keeping on behalf of the Company such books, records and statements to
          give a complete record of all transactions carried out by the Company
          in relation to the investment, realisation and re-investment of the
          Portfolio and such other books, records and statements as may be
          required to give a complete record of all other transactions carried
          out by the Company and as will enable the Company to


                              Page 38 of 50 Pages
<PAGE>

          publish yearly and half-yearly the report and accounts of the Company
          as required by the regulations of The Stock Exchange;

     (d)  acting as Secretary to the Company, attending all meetings of the
          Board and performing all the duties reasonably expected of a Company
          Secretary including liaison with The Stock Exchange, preparation and
          delivery of returns of The Registrar of Companies and the maintenance
          of all statutory books other than the register of members;

     (e)  all necessary equipment and personnel with a proper and adequate
          standard of proficiency and experience to enable the Manger to carry
          out its functions under this Agreement; and

     (f)  the Manager shall permit such of its employees (if any) as the Company
          may reasonably request to be Directors of the Company.

5.   Ancillary Powers of Manager
     ---------------------------

     The Manager may on behalf of the Company in respect of Relevant
     Investments:

     (a)  issue orders and instructions to the Company's bankers and custodians
          with respect to the disposition of securities and moneys of the
          Company provided always that any such disposition shall at all times
          be subject to and effected in accordance with the arrangements for the
          time being in force between the Company and its bankers and
          custodians;

     (b)  exercise any voting rights attached to the securities included in the
          Investments in pursuance of the policy agreed and established by the
          Board from time to time; and

     (c)  issue instructions to and consult the auditors and legal advisers of
          the Company regarding any matter or thing relating to Investments
          including (where the Board thinks fit) institution of legal
          proceedings.

6.   Further obligations of the Manager
     ----------------------------------

(1)  The Manager shall, and shall procure that its representatives, employees
     and delegates shall, obey and comply with all lawful orders and directions
     in relation to the Manager's obligations under this Agreement given to it
     or them from time to time by the Board and shall observe and comply with
     the Memorandum and Articles of Association of the Company as from time to
     time amended and with all resolutions of the Board or the Company of which
     they are informed.

                              Page 39 of 50 Pages
<PAGE>

(2)  In particular, all activities engaged in by the Manager or any
     representative, employee or delegate of the Manager on behalf of the
     Company shall at all times be subject to the overall control of and review
     by the Board and without limiting the generality of the foregoing the Board
     shall set out the investment policy of the Company specifying the manner in
     which it wishes the Manger to give effect to such policies.

(3)  The Board shall instruct the Manager as to the exercise of the voting
     rights attached to the securities in the Portfolio and may:

     (a)  prohibit the Manager from investing for the account of the Company in
          any particular security or class of securities;

     (b)  require the Manager to sell any security or class of securities or
          (subject to the availability of funds) to purchase any security or
          class of securities; and

     (c)  withdraw any part of the assets of the Company from the management of
          the Manager (but without thereby reducing the fee payable to the
          Manager under this Agreement) for any reason whatsoever.

7.   Custody
     -------

(1)  Unless it receives contrary instructions from the Company, the Manager
     shall make arrangements for the safekeeping of all cash, securities or
     other assets in the Portfolio for the account of the Company in accordance
     with this Clause 7 provided that the obligations of the Manager under this
     Clause 7 shall not apply in relation to any cash or other assets of the
     Company until the cash or assets concerned have been made available to the
     Manager following execution of this Agreement.  Insofar as the Manager
     holds assets comprised in the Portfolio (or documents of title relating to
     such assets), it shall do so separately from its own assets and on trust
     for the Company.

(2)  The Manager shall arrange for (i) any uninvested cash to be held in the
     Company's name in one or more accounts with Bank of Scotland or other first
     class banks approved by the Company and (ii) all securities to be held in
     custody accounts in the Company's name at Bank of Scotland or other
     reputable custodians approved by the Company.

(3)  The Manager shall make arrangements for:

     (a)  the collection of all income and principal with respect to the
          Portfolio and credit cash receipts to the bank accounts referred to
          above;

     (b)  the exchange of securities where the exchange is purely ministerial
          (including the exchange of temporary securities for those in
          definitive form and the exchange of warrants for, or other documents
          of entitlement to securities for, the securities themselves);


                              Page 40 of 50 Pages
<PAGE>

     (c)  the surrender of securities at maturity or when called for redemption
          against payment therefor.

(4)  The Manager shall notify any bank or custodian holding property comprised
     in the Portfolio that it is not the Manager's property.

(5)  The Manager shall have no right of lien or set-off or any right of
     retention with respect to any Investments held in the Portfolio.

(6)  All proxies or similar requests for consent and all notices (other than of
     a routine or immaterial nature) received by the Manager relating to
     securities held in the Portfolio are to be forwarded to the Company or are
     to be dealt with in accordance with instructions given by the Company from
     time to time.

8.   Management charge and expenses
     ------------------------------

(1)  The Company shall pay to the Manager as remuneration for the provision of
     its services hereunder a fee payable annually in arrears on 31st December
     in each year and calculated at the rate of 0.25 per cent per annum (plus
     value added tax) by reference to the Net Asset Value (calculated on a gross
     assets basis) as at 30th September, the first such payment, being a pro
     rata part of the annual fee, to be made on 31st December 1993 in respect of
     the period from the date of this Agreement to 30th September, 1993. On
     termination of this Agreement a pro rata fee shall be payable for any part
     of the year to 30th September for which this Agreement is in force, payable
     on the 31st December next following termination.

(2)  The Company shall bear the expenses of any kind incurred by or on behalf of
     the Manager in the carrying out of its duties and the provision of services
     and facilities hereunder, save for telex, telephone and other routine
     communication charges and the costs of providing normal office
     accommodation and secretarial and clerical staff for the normal performance
     of those duties.

(3)  The Manager shall also be entitled to additional fees, calculated on a time
     basis, for services provided in connection with any transactions involving
     the Company and/or any of its subsidiaries outside the ordinary course of
     business including in particular any issue of shares, debentures or other
     securities or any reorganization, redemption, consolidation, sub-division
     or other alteration of capital or any takeover, acquisition or disposal of
     or by the Company and/or any of its subsidiaries.

(4)  An amount equal to any amount payable to the Manager pursuant to this
     Clause shall be paid by the Company to the Manager promptly after delivery
     to the Company by the Manager of an invoice giving reasonable details in
     respect thereof. Notwithstanding the foregoing, the Manager shall be
     entitled, without delivery of an invoice as aforesaid, to

                              Page 41 of 50 Pages
<PAGE>

     charge any such amount to the Portfolio subject to notifying the Company in
     writing of the amount promptly thereafter.

(5)  For the purpose of this Clause 8 "Net Asset Value" shall mean the amount of
     the fixed and current tangible assets of the Company (other than shares in
     its subsidiaries) and its subsidiaries after deducting therefrom an amount
     equal to the current liabilities and the borrowings or other indebtedness
     in the nature of borrowings (except for borrowings repayable after an
     initial term of more than three years) of the Company and its subsidiaries
     as reasonably determined by the Manager.

9.   Subsidiaries
     ------------

     If the Company has at any time one or more subsidiaries then, unless
     otherwise directed by the Board, the Manager shall in addition provide the
     same services to such subsidiaries as it provides hereunder to the Company.

10.  Freedom to act
     --------------

     The services of the Manager to the Company under this Agreement shall not
     be exclusive and the Manager shall be free to render similar services to
     others and nothing in this Agreement shall preclude the Manager from having
     dealings with or on behalf of the Company either on its own account or on
     account of its clients or others or make it accountable to the Company in
     respect of any profit or commission from any such dealings.

11.  Termination
     -----------

(1)  If:

     (a)  either party shall commit any substantial or continuing material
          breach of this Agreement and (where such breach is capable of remedy)
          fail to remedy such a breach within thirty days of being given written
          notice of it by the other party; or

     (b)  either party shall have a receiver or administrator appointed over the
          whole or any part of their assets or a resolution is passed or an
          order made for the winding-up of such party other than as mentioned in
          sub-clause (2) below,

     the other party shall be entitled to terminate the appointment under this
     Agreement forthwith by giving written notice of termination to such party.

(2)  On termination of the appointment of the Manager, the Manager shall be
     entitled to receive all fees and other money accrued due up to the date of
     such termination but shall not be entitled to compensation in respect of
     termination (except where such

                              Page 42 of 50 Pages
<PAGE>

     appointment is terminated by the Manager in accordance with sub-clause
     (1)(a) of this Clause or by the Company in breach of Clause 2) and the
     Manager shall deliver to the Company or as it shall direct, all books of
     account, records, registers, correspondence, documents and assets belonging
     to the Company or any subsidiary in possession of or under the control of
     the Manager and take all necessary steps to vest in the Company any assets
     previously held in the name of or to the order of the Manager on behalf of
     the Company or any subsidiary.

(3)  The Manager shall also be entitled to terminate its appointment on giving
     four months' notice to the Company if either the Board fails to procure
     that Christopher Mills consults with the Manager in accordance with Clause
     3(2) or if the Manager has objected to an investment proposed by
     Christopher Mills and has given notice to the Board under Clause 3(2), but
     the Board has approved the proposal.

12.  Confidentiality and records
     ---------------------------

(1)  Neither party shall during the continuance of this Agreement or after its
     termination disclose to any person, firm or company whatsoever (except with
     the authority of the other party or unless ordered to do so by The Stock
     Exchange, the Panel on Takeovers and Mergers or by a regulatory body or
     court of competent jurisdiction) any information relating to the business,
     Portfolio, finances or other matters of a confidential nature of the other
     party of which it may in the course of its duties under this Agreement or
     otherwise become possessed and each party shall use all reasonable
     endeavors to prevent any such disclosure.

(2)  All books, statistical records, accounts, contract notes, correspondence
     and other documents relating to the business and affairs of the Company
     shall be the exclusive property of the Company and the Manager shall when
     reasonably requested produce the same to the Company or its employees,
     agents or auditors together with any information within the knowledge of
     the Manager in relation thereto.

13.  Reports and valuations
     ----------------------

(1)  The Manager shall provide the Company with regular monthly statements and
     valuations in respect of the Portfolio as at dates selected by the Company
     provided that the Company shall supply valuations to the Manager in respect
     of unlisted investments (not being Relevant Investments). The valuations
     provided by the Manager shall be in accordance with procedures and on a
     basis reviewed by the Company's auditors and as required by law or the
     regulations of The Stock Exchange. The reference currency will be pounds
     sterling for such documents.

(2)  Statements of the contents for the Portfolio prepared in accordance with
     the IMRO Rules will be provided on a quarterly basis in respect of
     quarterly periods of account.

                              Page 43 of 50 Pages
<PAGE>

14.  Notices
     -------

     Any notice to be given under this Agreement may be served personally or by
     post at the registered office of the party to be served and in the case of
     service of first class post shall be deemed duly served twenty-four hours
     after posting and proof of posting shall be proof of delivery.

15.  Liability and Indemnity
     -----------------------

(1)  Subject to the terms of this Agreement, the Manager shall be under no
     liability to the Company for any loss, costs or damages which may arise in
     connection with the conduct of its duties hereunder or the custody of the
     Investments or for any depreciation in the value of any Investments or
     their safe custody unless due to wilful default or negligence on its part.

(2)  The Company shall indemnify the Manager and keep it indemnified against any
     costs, claims, demands or proceedings made by any person and in any way
     arising from its appointment hereunder unless due to wilful default or
     negligence on its part.  The Manager agrees promptly to inform the Company
     in writing of any event which comes to its notice as a result of which the
     Company might become liable to indemnify the Manager under this Clause.

                              Page 44 of 50 Pages
<PAGE>

16.  Assignment
     ----------

     Neither party hereto shall be entitled to assign or otherwise part with any
     interest in this Agreement unless the prior written consent of the other
     has been obtained except that, if either party transfers the whole or a
     substantial part of its undertaking and property to another company as part
     of a reconstruction or amalgamation, that party may by written notice to
     the other transfer all its rights and obligations under this Agreement to
     that other company.

17.  Governing law
     -------------

     This Agreement is governed by and shall be construed in accordance with the
     laws of England to the jurisdiction of whose Courts the parties irrevocably
     submit.

IN WITNESS of which each of the parties has executed this Agreement on the date
first mentioned on page 1.

SIGNED by  J.J. Nelson                   )
                                         ) /s/ James J. Nelson
on behalf of                             )
LEVERAGED OPPORTUNITY TRUST PLC          )
in the presence of:                      )




SIGNED by R.C.O. Hellyer                 )
                                         ) /s/ R.C.O. Hellyer
on behalf of                             )
J O HAMBRO & PARTNERS LIMITED            )
in the presence of:                      )

                              Page 45 of 50 Pages

<PAGE>

                               POWER OF ATTORNEY


                              Page 46 of 50 Pages
<PAGE>

                               POWER OF ATTORNEY
                               -----------------

This general Power of Attorney is made this ninth day of July 1997 by
Christopher Harwood Bernard Mills.

I hereby appoint Claudia Margaret Cecil Perkins of 10 Park Place, London SW1A
1LP to be my attorney whereby she is empowered to sign on my behalf all
documents required for the proper conduct of the businesses of J O Hambro &
Partners Limited, North Atlantic Smaller Companies Investment Trust Plc and its
subsidiaries, American Opportunity Trust PLC and its subsidiaries, Growth
Financial Services Limited and Eveswise Ltd Retirement & Death Scheme. This
Power shall include but not be limited to authorising all statutory, regulatory
and other legal submissions which may be required to be made by any of the above
companies.

IN WITNESS WHEREOF I have hereunto set my hand and seal the day and year first
above written:



Signed, Sealed and Delivered     )
By the above named               )  /s/ Christopher Harwood Bernard Mills
CHRISTOPHER HARWOOD BERNARD MILLS)
in the presence of:              )

                                 Maureen O'Hara
                                 10 Park Place
                                 London
                                 SW1A 1LP


                              Page 47 of 50 Pages

<PAGE>

                             JOINT FILING AGREEMENT


                              Page 48 of 50 Pages
<PAGE>

                             JOINT FILING AGREEMENT
                             ----------------------


     The undersigned hereby agree to the Statement on Schedule 13D dated April
13, 2000 with respect to the shares of common stock, par value $.01, of Airnet
Systems, Inc. and any further amendments thereto executed by each or any of us
shall be filed on behalf of each of us pursuant to and in accordance with the
provisions of Rule 13d-1(f) under the Securities Exchange Act of 1934, as
amended.

     This Agreement may be executed in separate counterparts, each of which
shall be deemed an original, but all of which shall constitute one and the same
instrument.


Date:  April 13, 2000              J O HAMBRO CAPITAL MANAGEMENT
                                   (HOLDINGS) LIMITED

                                   By: /s/ R.G. Barrett
                                      --------------------------------------
                                      Name:  R.G. Barrett
                                      Title:  Director

Date:  April 13, 2000              J O HAMBRO CAPITAL MANAGEMENT
                                   LIMITED

                                   By: /s/ R.G. Barrett
                                      --------------------------------------
                                      Name:  R.G. Barrett
                                      Title:  Director

Date:  April 13, 2000              AMERICAN OPPORTUNITY TRUST PLC

                                   By: J O Hambro Capital Management Limited,
                                              Its investment advisor


                                   By: /s/ R.G. Barrett
                                      --------------------------------------
                                      Name:  R.G. Barrett
                                      Title:  Director

Date:  April 13, 2000              CHRISTOPHER MILLS


                                   By: /s/ C.H.B. Mills
                                      --------------------------------------
                                      Name:  C.H.B. Mills

                              Page 49 of 50 Pages
<PAGE>

Date:  April 13, 2000         THE TRIDENT NORTH ATLANTIC FUND

                              By:  J O Hambro Capital Management Limited,
                                         Its investment advisor


                              By: /s/ R.G. Barrett
                                 --------------------------------------
                                 Name:  R.G. Barrett
                                 Title:  Director


Date:  April 13, 2000         ORYX INTERNATIONAL GROWTH FUND
                              LIMITED

                              By:  J O Hambro Capital Management Limited,
                                         Its investment advisor

                              By: /s/ R.G. Barrett
                                 --------------------------------------
                                 Name:  R.G. Barrett
                                 Title:  Director


Date: April 13, 2000          CONSULTA (CHANNEL ISLANDS) LIMITED

                              By: /s/ Barry Carroll
                                 --------------------------------------
                                 Name:  Barry Carroll
                                 Title:  Director


Date:  April 13, 2000         PREMIER NORTH ATLANTIC

                              By:  J O Hambro Capital Management Limited,
                                         Its investment advisor


                              By: /s/ R.G. Barrett
                                 --------------------------------------
                                 Name:  R.G. Barrett
                                 Title:  Director

                              Page 50 of 50 Pages


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