AERIAL COMMUNICATIONS INC
SC 13D, 1999-10-05
RADIOTELEPHONE COMMUNICATIONS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)

                               (Amendment No. 2)1


                           Aerial Communications, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                         Common Shares ($1.00 par value)
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    007655103
                       -----------------------------------
                                 (CUSIP Number)

                      LeRoy T. Carlson, Jr. (312) 630-1900
                      President and Chief Executive Officer
                        Telephone and Data Systems, Inc.
            30 N. LaSalle Street, Suite 4000, Chicago, Illinois 60602
- --------------------------------------------------------------------------------
 (Name, Address and Telephone Number of Person Authorized to Receive
                          Notices and Communications)

                               September 17, 1999
             -------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


     If the filing  person has  previously  filed a statement on Schedule 13G to
report the  acquisition  that is the subject of this Schedule 13D, and is filing
this  schedule  because  of Rule  13d-1(e),  13d-1(f)  or  13d-1(g),  check  the
following box |_|.


     Note:  Schedules  filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other
parties to whom copies are to be sent.

                         (Continued on following pages)

                               (Page 1 of 8 Pages)
- ---------------------
     1The  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.

     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 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.  007655103                 13D       Page     2     of     9     Pages
           ---------                                ---------    ---------
- --------------------------------------------------------------------------------



     1         NAME OF REPORTING PERSONS
               I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                 Telephone and Data Systems, Inc.

      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*      (a)   |_|
                                                                      (b)   |_|

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*

                 00

      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEM 2(d) or 2(e)                                         |_|

      6        CITIZENSHIP OR PLACE OF ORGANIZATION

                 Delaware

                                    7       SOLE  VOTING   POWER  -   78,176,909
                                            shares - Includes  52,924,151 Series
                                            A Common  Shares  which have fifteen
                                            votes per share on all  matters  and
                                            are convertible on a share-for-share
                                            basis   into   Common   Shares   and
                                            25,252,758 Common Shares.  See Item
                                            5 for further explanation.  See also
            NUMBER OF                       Item 4.
               SHARES
            BENEFICIALLY
              OWNED BY
                EACH
              REPORTING
               PERSON
                WITH

                                    8       SHARED VOTING POWER

                                              -0-

                                    9       SOLE DISPOSITIVE POWER

                                              Same as 7 above.

                                   10       SHARED DISPOSITIVE POWER

                                              -0-

     11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 Same as 7 above.

     12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                             |_|

     13   PERCENT OF CLASS  REPRESENTED BY AMOUNT IN ROW (11)  Reporting  person
          beneficially  owns 100% of the  outstanding  Series A Common Shares of
          the Issuer and approximately 60.8% of the outstanding Common Shares of
          the Issuer for a combined total of approximately 82.8% of the Issuer's
          outstanding  classes of capital stock and approximately 98.0% of their
          combined voting power.**

     14   TYPE OF REPORTING PERSON*

                 HC, CO
- --------------------------------------------------------------------------------
                    *SEE INSTRUCTIONS BEFORE FILLING OUT!

     **Based on 31,930,588  Common Shares and 40,000,000  Series A Common Shares
outstanding  on September  17, 1999 and 9,575,849  Common Shares and  12,924,151
Series  A  Common  Shares  issuable  pursuant  to  the  Debt/Equity  Replacement
Agreement and Settlement Agreement and Release referred to herein.


<PAGE>


                                  SCHEDULE 13D
- --------------------------------------------------------------------------------

CUSIP No.  007655103                13D       Page     3     of     9     Pages
           ---------                              ---------    ---------
- --------------------------------------------------------------------------------



      1        NAME OF REPORTING PERSONS
               I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

               The Trustees of the Voting Trust under  Agreement  dated June 30,
               1989

      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*       (a)  |X|
                                                                       (b)  |_|

      3        SEC USE ONLY

      4        SOURCE OF FUNDS*

                 00

      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEM 2(d) or 2(e) o


      6        CITIZENSHIP OR PLACE OF ORGANIZATION

                 United States
                                    7       SOLE VOTING POWER
              NUMBER OF
               SHARES                                  -0-
            BENEFICIALLY
              OWNED BY
                EACH
              REPORTING
               PERSON
                WITH

                                    8       SHARED  VOTING  POWER  -  78,176,909
                                            shares - Includes  52,924,151 Series
                                            A Common  Shares  which have fifteen
                                            votes per share on all  matters  and
                                            are convertible on a share-for-share
                                            basis   into   Common   Shares   and
                                            25,252,758 Common Shares. See Item 5
                                            for  further  explanation.  See also
                                            Item 4.

                                    9       SOLE DISPOSITIVE POWER

                                              -0-

                                   10       SHARED DISPOSITIVE POWER

                                              Same as 8 above.

     11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                 Same as 8 above.

     12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
          |_|


     13   PERCENT OF CLASS  REPRESENTED BY AMOUNT IN ROW (11) Reporting  persons
          may be deemed to  beneficially  own 100% of the  outstanding  Series A
          Common Shares of the Issuer and approximately 60.8% of the outstanding
          Common  Shares of the  Issuer for a  combined  total of  approximately
          82.8%  of the  Issuer's  outstanding  classes  of  capital  stock  and
          approximately 98.0% of their combined voting power.**

     14   TYPE OF REPORTING PERSON*

                 00
- -------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

      **Based on 31,930,588  Common Shares and 40,000,000 Series A Common Shares
outstanding  on September  17, 1999 and 9,575,849  Common Shares and  12,924,151
Series  A  Common  Shares  issuable  pursuant  to  the  Debt/Equity  Replacement
Agreement and Settlement Agreement and Release referred to herein.


<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 4 of 9 Pages


         This Amendment  Number 2 to the Schedule 13D is being filed pursuant to
Section 13(d)(2) of the Securities Exchange Act of 1934, as amended (the "Act"),
by Telephone  and Data  Systems,  Inc.,  a Delaware  corporation  ("TDS").  This
amended Schedule 13D relates to the ownership by TDS of Common Shares, par value
$1.00 per share  ("Common  Shares"),  and/or Series A Common  Shares,  par value
$1.00 per share ("Series A Common Shares" and,  together with the Common Shares,
"Common Stock"),  of Aerial  Communications,  Inc., a Delaware  corporation (the
"Issuer").


     Item 1.      Security and Issuer.
                  -------------------
         This statement relates to the Common Shares, par value $1.00 per share,
and Series A Common  Shares,  par value  $1.00 per  share,  of the  Issuer.  The
principal  executive  office of the  Issuer is  located  at 8410 West Bryn Mawr,
Suite 700, Chicago, Illinois 60631.


     Item 2.      Identity and Background.
                  -----------------------
         TDS and the Trustees of the Voting Trust under Agreement dated June 30,
1989 (the "Voting  Trust"),  are filing this Schedule 13D  amendment  concerning
their direct and indirect  beneficial  ownership of Common Shares. The following
sets forth  information  with respect to Items 2(a) through 2(f) for TDS and the
Trustees of the TDS Voting Trust.

         TDS. TDS is a Delaware  corporation.  The principal business and office
address of TDS, is 30 North LaSalle Street, Suite 4000, Chicago, Illinois 60602.
TDS's  principal  business is that of providing  diversified  telecommunications
services.  TDS, directly and through its subsidiaries,  has established cellular
telephone,  local telephone and personal communications services operations. The
information  with respect to the directors and executive  officers of TDS is set
forth  on  Appendices  A and B  attached  hereto,  and  incorporated  herein  by
reference.

         The Trustees of the Voting Trust. The principal business address of the
Voting Trust is c/o TDS, 30 North LaSalle Street, Suite 4000, Chicago,  Illinois
60602.  The Voting  Trust  holds TDS Series A Common  Shares and was  created to
facilitate  long-standing  relationships among the trust's certificate  holders.
Under the terms of the Voting Trust, the trustees hold and vote the TDS Series A
Common Shares held in the trust. The information with respect to the trustees of
the Voting Trust is set forth in Appendix C hereto,  and incorporated  herein by
reference.

         To the  knowledge of LeRoy T.  Carlson,  Jr.,  during the last five (5)
years, none of TDS, the Voting Trust, nor any of the persons named in Appendices
A, B and C hereto has been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors).

         To the  knowledge of LeRoy T.  Carlson,  Jr.,  during the last five (5)
years, none of TDS, The Voting Trust, nor any of the persons named in Appendices
A,  B and  C  hereto  was  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.


     Item 3.  Source and Amount of Funds or Other Consideration.
              --------------------------------------------------
              See Item 4.


     Item 4.  Purpose of Transaction.
              ----------------------
         As previously reported, on December 18, 1998, TDS announced that it was
pursuing a tax-free spin-off of its interest in the Issuer, as well as reviewing
other alternatives.

         On  September  20,  1999,  TDS and the Issuer  announced  that they had
entered into an Agreement and Plan of Reorganization  with VoiceStream  Wireless
Corporation   ("VoiceStream")   ,  VoiceStream   Wireless  Holding   Corporation
("Holding"  and,  together  with  VoiceStream,  "Parent"),  and a subsidiary  of
Holding  ("Merger  Sub C"),  pursuant to which  Merger Sub C will merge with and
into the Issuer, with the Issuer surviving the merger (the "Reorganization").
 In the  Reorganization,  each outstanding  share of Common Stock of the Issuer,
including  all  shares  of  Common  Stock  beneficially  owned  by TDS,  will be
converted  into the right to  receive  0.455  shares  of common  stock of Parent
("Parent


<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 5 of 9 Pages


Common Stock").  Based on this exchange  ratio,  and considering the issuance of
19,090,909  additional  shares of Issuer Common Stock to TDS as described below,
TDS would receive, in the  Reorganization,  an aggregate of 35,570,493 shares of
Parent Common Stock in exchange for an aggregate of 78,176,909  shares of Issuer
Common Stock.  This exchange ratio may be adjusted under certain  circumstances.
Alternatively,  shareholders  of the Issuer  other than TDS or Sonera Ltd.  will
have the option to elect to receive $18.00 in cash for each Common Share.

         In connection with the  Reorganization,  TDS entered into a Stockholder
Agreement with  VoiceStream and Holding  pursuant to which,  among other things,
TDS agreed to vote in favor of the  Reorganization at a stockholders  meeting of
the Issuer called for that purpose, and against other competing transactions.

         Pursuant to a  Debt/Equity  Replacement  Agreement  among the  Company,
Aerial Operating  Company,  Inc,  ("AOC"),  TDS and Parent, as supplemented by a
Settlement  Agreement and Release among Sonera,  Ltd. Sonera  Corporation  U.S.,
TDS, the Company and AOC,  which were entered  into  contemporaneously  with the
execution  of  the  Agreement  and  Plan  of  Reorganization,  $420  million  of
additional  equity of the  Company  will be issued  to TDS and $230  million  of
additional  equity of the  Company  and/or AOC will be issued to  Sonera,  at an
equivalent price of $22.00 per share of Company Common Stock.  Accordingly,  the
Company will issue to TDS 19,090,909  additional  shares of Company Common Stock
on November 1, 1999.

         Under  a  Parent   Stockholder   Agreement  (the  "Parent   Stockholder
Agreement"), entered into in connection with the Reorganization Agreement, among
the Issuer,  Parent,  TDS and certain  stockholders of Parent (identified on the
signature page to the Parent Stockholder Agreement) (the "Parent Stockholders"),
the Parent  Stockholders  and TDS have  agreed to enter into a Voting  Agreement
(together with the  stockholders  of Omnipoint  Corporation  if Parent  acquires
Omnipoint  Corp. and such  stockholders  agree to enter into such  agreement) on
terms  mutually  agreeable to the parties  thereto,  which will provide that the
parties  thereto will vote their shares of Parent  Common Stock for the election
to the board of  directors  of Parent in the  manner  specified  in such  Voting
Agreement. The Parent Stockholders and TDS have agreed that the Voting Agreement
shall  provide,  among other things,  that so long as TDS  beneficially  owns at
least 4,500,000 shares of Parent Common Stock, one member of the Parent board of
directors shall be an individual designated by TDS (the "TDS Designee"),  except
that the TDS Designee may not be an officer, director, management level employee
or affiliate  of TDS, or of any person in which TDS or any  affiliate of TDS has
an "attributable interest" (as defined by applicable FCC rules and regulations);
provided, however, that Parent shall have the right to approve the TDS Designee,
which  approval  shall  not be  unreasonably  withheld;  and  provided  further,
however,  that if TDS owns more than 9,800,000 shares of Parent Common Stock and
Sonera Ltd. and its affiliates  own less than 4,500,000  shares of Parent Common
Stock,  then TDS  shall  have the right to two TDS  Designees  as  directors  of
Parent.

         At the closing of the  Reorganization,  pursuant to the  Agreement  and
Plan of  Reorganization,  TDS and Parent will enter into an  Investor  Agreement
which will limit certain  actions by TDS as a stockholder of Parent for a period
of five (5)  years.  Subject to  certain  exceptions,  TDS will agree not to (i)
acquire any  additional  shares of Parent  Common Stock which would cause TDS to
own in excess of 24.9% of the  voting  securities  of Parent  (except  that this
percentage  will  be  28% if  the  Reorganization  occurs  at a  time  that  the
Omnipoint-VoiceStream Reorganization has not occurred); (ii) solicit proxies for
shares of Parent Common Stock or  participate in an election  contest;  or (iii)
join a group or take any action to initiate, encourage or otherwise facilitate a
tender or exchange  offer for Parent  which would result in change of control of
Parent. In addition,  TDS would agree to certain  restrictions on its ability to
transfer its shares of Parent Common Stock.  In particular,  if TDS sells Parent
Common Stock, it would agree to take reasonable care to preclude the acquisition
of more than 5% of the voting power of the Parent  Common Stock by any person or
group, except Sonera Ltd. and certain other affiliated parties.

         Pursuant  to  the  Stockholder   Agreement,   at  the  closing  of  the
Reorganization,  TDS and Parent will enter into a Registration  Rights Agreement
pursuant to which TDS will receive demand and piggyback  registration rights for
the shares of Parent  common stock  received by TDS in the  Reorganization.  The
Registration  Rights Agreement will permit four (4) demand  registration  rights
(one every nine (9) months) and permit unlimited piggyback  registration rights.
The registration  rights would survive only as long as TDS is unable to sell the
shares of Parent common stock without registration.

         The foregoing  descriptions of the above  agreements is subject to, and
qualified in their entirety by reference to, the text of such agreements,  which
are incorporated by reference as exhibits hereto.



<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 6 of 9 Pages


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

         (I)      TDS.
                  ---
                  (a)      As of  September  17,  1999,  TDS  may be  deemed  to
                           beneficially  own,  pursuant to Rule 13d- 3(d)(1)(i),
                           an aggregate of 78,176,909  shares of common stock of
                           the Issuer.  This includes  25,252,758  Common Shares
                           and 52,924,151 Series A Common Shares.

                  (b)      (i)      Sole Power to Vote or Direct the Vote:
                                    -------------------------------------
                                    TDS  is  the  direct   beneficial  owner  of
                                    25,252,758   Common  Shares  and  52,924,151
                                    Series  A  Common   Shares  of  the   Issuer
                                    representing   approximately  82.8%  of  all
                                    classes of common  stock of the Issuer.  The
                                    Series A Common  Shares  have  fifteen  (15)
                                    votes  per  share  on all  matters  and  are
                                    convertible on a share-for-share  basis into
                                    Common  Shares.  TDS has sole  voting  power
                                    with respect to an  aggregate of  25,252,758
                                    Common Shares and 52,924,151 Series A Common
                                    Shares  representing  approximately 98.0% of
                                    the  combined  voting  power  of the  Common
                                    Shares and the Series A Common Shares.  As a
                                    result of such ownership, TDS has the voting
                                    power to elect all of the  directors  of the
                                    Issuer.

                           (ii)     Shared Power to Vote or Direct the Vote:
                                    ---------------------------------------
                                    None.

                           (iii)    Sole   Power  to   Dispose   or  Direct  the
                                    --------------------------------------------
                                    Disposition:
                                    -----------
                                    TDS has sole power to dispose of  25,252,758
                                    Common Shares and 52,924,151 Series A Common
                                    Shares,  representing approximately 82.8% of
                                    all classes of capital stock outstanding.

                           (iv)     Shared   Power  to  Dispose  or  Direct  the
                                    --------------------------------------------
                                    Disposition:
                                    -----------
                                    None.

                  (c)      To  the  knowledge  of  LeRoy  T.  Carlson,  Jr.,  no
                           transactions were effected during the past sixty (60)
                           days in Common Shares by TDS,  except as disclosed in
                           Item 4,  and  except  as may be  attributable  to TDS
                           pursuant to transactions in the ordinary course under
                           employee benefit plans.

                  (d)      To the knowledge of LeRoy T.  Carlson,  Jr., no other
                           person is known to have the right of dividends  from,
                           or the proceeds from the sale of the shares of Common
                           Shares beneficially owned by TDS.

                  (e)      Not Applicable.


         (II) Directors and Executive Officers of TDS.
              ---------------------------------------
                  (a) - (b)See  Appendix  D  attached  hereto  and  incorporated
                           herein by reference.

                  (c)      To  the  knowledge  of  LeRoy  T.  Carlson,  Jr.,  no
                           transactions were effected during the past sixty (60)
                           days  in  the  Common   Shares  by  any  Director  or
                           Executive  Officer  of  TDS,  and  except  as  may be
                           attributable  to TDS pursuant to  transactions in the
                           ordinary course under employee benefit plans.

                  (d)      To the knowledge of LeRoy T. Carlson,  Jr., no person
                           other than the persons listed in Appendix D are known
                           to have the right to  receive  or the power to direct
                           the receipt of dividends from, or other proceeds from
                           the sale of Common Shares  beneficially  owned by the
                           persons listed in Appendix D.



<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 7 of 9 Pages


                  (e)      Not applicable.


         (III) The Voting Trust.
               ----------------
                  (a)      As  of   September   17,   1999,   pursuant  to  Rule
                           13d-3(d)(1)(i),  the  Voting  Trust  may be deemed to
                           beneficially own an aggregate of 78,176,909 shares of
                           common stock of the Issuer.  This includes 25,252,758
                           Common Shares and 52,924,151 Series A Common Shares.

                  (b)      (i)      Sole Power to Vote or Direct the Vote:
                                    --------------------------------------
                                    None.

                           (ii)     Shared Power to Vote or Direct the Vote:
                                    ---------------------------------------
                                    The Voting  Trust is the  direct  beneficial
                                    owner of TDS  Series A  Common  Shares.  The
                                    Voting  Trust  holds and the  trustees  vote
                                    6,355,216  Series  A Common  Shares  of TDS,
                                    representing   approximately  91.4%  of  the
                                    outstanding TDS Series A Common Shares,  and
                                    approximately  51.2% of the combined  voting
                                    power of TDS Series A Common  Shares and TDS
                                    Common Shares.2 Therefore,  the Voting Trust
                                    may be deemed to  direct a  majority  of the
                                    combined  voting power of TDS, which has the
                                    voting  power to elect all  directors of the
                                    Issuer  and has  approximately  98.0% of the
                                    combined  voting  power of the  Issuer  with
                                    respect to matters  other than the  election
                                    of directors.

                           (iii)    Sole   Power  to   Dispose   or  Direct  the
                                    --------------------------------------------
                                    Disposition:
                                    -----------
                                    None.

                           (iv)     Shared   Power  to  Dispose  or  Direct  the
                                    --------------------------------------------
                                    Disposition:
                                    ------------
                                    The    information    contained    in   Item
                                    5.III(b)(ii) above is incorporated herein by
                                    reference.  Through  the  deemed  ability to
                                    direct a  majority  of the  combined  voting
                                    power  of TDS,  the  Voting  Trust  trustees
                                    share the power to direct the disposition of
                                    25,252,758   Common  Shares  and  52,924,151
                                    Series  A  Common   Shares  of  the  Issuer,
                                    representing 82.8% of all classes of capital
                                    stock outstanding of the Issuer.

                  (c)      To  the  knowledge  of  LeRoy  T.  Carlson,  Jr.,  no
                           transactions were effected during the past sixty (60)
                           days in Common  Shares  or Series A Common  Shares of
                           the Issuer by the Voting  Trust  except to the extent
                           disclosed herein.

                  (d)      To the knowledge of LeRoy T. Carlson,  Jr., no person
                           other  than TDS is known to have the right to receive
                           or the power to direct the receipt of dividends from,
                           or the proceeds  from the sale of,  Common  Shares or
                           Series A Common  Shares  of the  Issuer  beneficially
                           owned by the Voting Trust.

                  (e)      Not Applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to
        ------------------------------------------------------------------------
        Securities of the Issuer.
        -------------------------
         See Item 4.

The Voting Trust holds TDS Series A Common  Shares and was created to facilitate
long-standing  relationships  among the trust's certificate  holders.  Under the
terms of the Voting  Trust,  the trustees  hold and vote the TDS Series A Common
Shares held in the trust.  The Voting Trust trustees hold and vote 6,355,216 TDS
Series A Common Shares
- ------------------------------------
2 Based on 54,500,433  Common Shares of TDS and 6,954,058 Series A Common Shares
outstanding on August 31, 1999.


<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 8 of 9 Pages


held in the Voting Trust,  representing  91.4% of the  outstanding  TDS Series A
Common Shares,  and approximately  51.2% of the combined voting power of the TDS
Series A Common  Shares  and TDS Common  Shares.  Therefore,  the  Voting  Trust
trustees may be deemed to direct a majority of the combined voting power of TDS,
which has the sole  voting  power  with  respect to  approximately  98.0% of the
combined voting power of the Issuer.

     Item 7.      Material to be Filed as Exhibits.
                  --------------------------------
         1.       Agreement and Plan of Reorganization dated as of September 17,
                  1999, among VoiceStream, Holding, Sub, the Issuer and TDS*

         2.       Stockholder  Agreement  dated as of September 17, 1999,  among
                  TDS, VoiceStream and Holding *

         3.       Parent  Stockholder  Agreement dated as of September 17, 1999,
                  among the  Issuer,  TDS,  VoiceStream  and Holding and certain
                  stockholders of VoiceStream*

         4.       Debt/Equity  Replacement  Agreement  dated as of September 17,
                  1999, among TDS, the Issuer,  Aerial Operating Company,  Inc.,
                  VoiceStream and Holding*

         5.       Settlement  Agreement  and Release  dated as of September  17,
                  1999, among TDS, the Issuer,  Aerial Operating Company,  Inc.,
                  and Sonera, as agreed to by VoiceStream and Holding*

     -----------------

     *  Incorporated  herein by reference to the TDS Form 8-K filed on September
28, 1999.


     In addition, the Voting Trust Agreement dated June 30, 1989, as amended, is
hereby  incorporated  by reference  to Exhibit 9.1 to the Annual  Report on Form
10-K for the year ended December 31, 1997 of Aerial Communications, Inc.

                                   * * * * * *




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 9 of 9 Pages


                             JOINT FILING AGREEMENT

                  The  undersigned  hereby agree and  consent,  pursuant to Rule
13d-1(f)(1),  to the joint  filing of all  Schedules  13D and/or  Schedules  13G
(including any amendments thereto) on behalf of such parties with respect to the
Issuer.


                                   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 as of October 4, 1999.

     TELEPHONE AND DATA SYSTEMS, INC.        THE VOTING TRUST



     By: /s/ LeRoy T. Carlson, Jr.           By:  /s/ LeRoy T. Carlson, Jr.
         --------------------------               -----------------------------
         LeRoy T. Carlson, Jr.                   LeRoy T. Carlson, Jr.
         President and Chief Executive Officer   As Trustee and Attorney-in-Fact
                                                 for other Trustees*




                                   *Pursuant to Joint Filing Agreement and Power
                                    of Attorney  previously filed with the
                                    Securities and Exchange Commission and
                                    incorporated by reference herein.


































             Signature Page to the 2nd Amendment to the Schedule 13D
         relating to the direct and indirect beneficial ownership of the
                 Common Shares of Aerial Communications, Inc. by
      Telephone and Data Systems, Inc., and The Voting Trust, respectively.






<PAGE>


Schedule 13D
Issuer:      Aerial Communications, Inc.
Page 1 of 5 of Appendix A


                                   APPENDIX A

                                DIRECTORS OF TDS
                                ----------------

     (I)          (a)      Name:
                           -----
                           LeRoy T. Carlson

                  (b)      Business Address:
                           ----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Chairman of Telephone and Data Systems, Inc.
                           Director of Issuer

                  (d)      Citizenship:
                           -----------
                           United States


     (II)         (a)      Name:
                           ----
                           LeRoy T. Carlson, Jr.

                  (b)      Business Address:
                           ----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           President  and Chief  Executive  Officer of Telephone
                           and Data  Systems,  Inc.
                           Director  and  Chairman  of Issuer

                  (d)      Citizenship:
                           -----------
                           United States




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 2 of 5 of Appendix A

     (III)        (a)      Name:
                           -----
                           Sandra L. Helton

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Executive   Vice  President  -  Finance  and  CFO  of
                           Telephone and Data Systems, Inc.
                           Director of Issuer

                  (d)      Citizenship:
                           ------------
                           United States


     (IV)         (a)      Name:
                           -----
                           James Barr III

                  (b)      Business Address:
                           ----------------
                           TDS Telecommunications Corporation
                           301 South Westfield Road
                           Madison, Wisconsin  53705-0158

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           President of TDS  Telecommunications  Corporation,  a
                           wholly-owned   subsidiary   of  Telephone   and  Data
                           Systems, Inc.
                           Director of Issuer

                  (d)      Citizenship:
                           -----------
                           United States


     (V)          (a)      Name:
                           -----
                           Walter C.D. Carlson

                  (b)      Business Address:
                           ----------------
                           Sidley & Austin
                           Bank One Plaza
                           10 South Dearborn Street
                           Chicago, Illinois  60603

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Partner of the law firm of Sidley & Austin
                           Director of Issuer

                  (d)      Citizenship:
                           -----------
                           United States


<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 3 of 5 of Appendix A





     (VI)         (a)      Name:
                           ----
                           Letitia G.C. Carlson

                  (b)      Residence Address:
                           -----------------
                           7604 Fairfax Road
                           Bethesda, Maryland  20814

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Medical Doctor

                  (d)      Citizenship:
                           -----------
                           United States


     (VII)        (a)      Name:
                           ----
                           Donald C. Nebergall

                  (b)      Residence Address:
                           -----------------
                           2919 Applewood Place, N.E.
                           Cedar Rapids, Iowa  52402

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Consultant to Telephone and Data Systems, Inc.

                  (d)      Citizenship:
                           -----------
                           United States


     (VIII)       (a)      Name:
                           -----
                           Herbert S. Wander

                  (b)      Business Address:
                           -----------------
                           Katten, Muchin & Zavis
                           525 West Monroe Street
                           Suite 1600
                           Chicago, Illinois 60606-3693

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Partner of the law firm of Katten, Muchin & Zavis

                  (d)      Citizenship
                           -----------
                           United States





<PAGE>


Schedule 13D
Issuer: Aerial Communications, Inc.
Page 4 of 5 of Appendix A





     (IX)         (a)      Name:
                           -----
                           George W. Off

                  (b)      Business Address:
                           -----------------
                           Catalina Marketing Group
                           11300 Ninth Street North
                           St. Petersburg, Florida  33716

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           President  and Chief  Executive  Officer of  Catalina
                           Marketing Corporation

                  (d)      Citizenship:
                           ------------
                           United States


     (X)          (a)      Name:
                           -----
                           Martin L. Solomon

                  (b)      Business Address:
                           -----------------
                           2665 South Bayshore Drive, Suite 906
                           Coconut Grove, Florida 33133

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Chairman and CEO of American Country Holdings, Inc.

                  (d)      Citizenship:
                           -----------
                           United States


     (XI)         (a)      Name:
                           ------
                           Kevin A. Mundt

                  (b)      Business Address:
                           -----------------
                           Mercer Management Consulting, Inc.
                           33 Hayden Avenue
                           Lexington, MA  02173

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Vice   President  -  Retail   Group  Head  of  Mercer
                           Management Consulting, Inc.

                  (d)      Citizenship:
                           ------------
                           United States





<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 5 of 5 of Appendix A





     (XII)       (a)       Name:
                           -----
                           Murray L. Swanson

                  (b)      Business Address:
                           ----------------
                           1118 Sheridan Road
                           Evanston, Illinois 60202

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Managing Director and CEO of Sonera Corporation U.S.

                  (d)      Citizenship:
                           -----------
                           United States





<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 1 of 7 of Appendix B

                                        APPENDIX B

                                 EXECUTIVE OFFICERS OF TDS
                                 --------------------------

     (I)          (a)      Name:
                           ----
                           LeRoy T. Carlson

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Director Chairman of Telephone and Data Systems, Inc.
                           Director of Issuer

                  (d)      Citizenship:
                           -----------
                           United States


     (II)         (a)      Name:
                           ----
                           LeRoy T. Carlson, Jr.

                  (b)      Business Address:
                           ----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Director,  President and Chief  Executive  Officer of
                           Telephone  and  Data  Systems,   Inc.
                           Director and Chairman of Issuer

                  (d)      Citizenship:
                           -----------
                           United States



<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 2 of 7 of Appendix B

     (III)        (a)      Name:
                           ----
                           Sandra L. Helton

                  (b)      Business Address:
                           ----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois 60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Director and Executive  Vice  President - Finance and
                           CFO of Telephone and Data Systems,  Inc.
                           Director of Issuer

                  (d)      Citizenship:
                           -----------
                           United States


     (IV)         (a)      Name:
                           ----
                           Rudolph E. Hornacek

                  (b)      Business Address:
                           ----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Vice  President -  Engineering  of Telephone and Data
                           Systems, Inc.
                           Director of Issuer

                  (d)      Citizenship:
                           -----------
                           United States




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 3 of 7 of Appendix B

     (V)          (a)      Name:
                           ----
                           H. Donald Nelson

                  (b)      Business Address:
                           -----------------
                           United States Cellular Corporation
                           8410 West Bryn Mawr
                           Suite 700
                           Chicago, Illinois  60631

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           President  and  Chief  Executive  Officer  of  United
                           States  Cellular  Corporation,  an  over  80%-  owned
                           subsidiary of Telephone and Data Systems, Inc.

                  (d)      Citizenship:
                           -----------
                           United States

     (VI)         (a)      Name:
                           -----
                           James Barr III

                  (b)      Business Address:
                           ----------------
                           TDS Telecommunications Corporation
                           301 South Westfield Road
                           Madison, Wisconsin  53705-0158

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Director  and  President  of  TDS  Telecommunications
                           Corporation,  a wholly-owned  subsidiary of Telephone
                           and Data Systems, Inc.
                           Director of Telephone and Data Systems, Inc.
                           and Issuer

                  (d)      Citizenship:
                           -----------
                           United States


     (VII)        (a)      Name:
                           -----
                           Donald W. Warkentin

                  (b)      Business Address:
                           -----------------
                           Aerial Communications, Inc.
                           8410 West Bryn Mawr Avenue
                           Suite 1100
                           Chicago, Illinois  60631

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Director and President of Issuer

                  (d)      Citizenship:
                           ------------
                           United States




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 4 of 7 of Appendix B

     (VIII)       (a)      Name:
                           -----
                           Scott H. Williamson

                  (b)      Business Address:
                           -----------------
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           ------------------------------------------
                           Senior Vice President - Acquisitions of Telephone and
                           Data Systems, Inc.

                  (d)      Citizenship:
                           -----------
                           United States




     (IX)         (a)      Name:
                           -----
                           Michael K. Chesney

                  (b)      Business Address:
                           -----------------
                           1014 South Briarcliffe Circle
                           Maryville, Tennessee 37803

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice  President - Corporate  Development of Telephone
                           and Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States


     (X)          (a)      Name:
                           -----
                           George L. Dienes

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois   60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice President-Corporate Development of Telephone and
                           Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 5 of 7 of Appendix B

     (XI)         (a)      Name:
                           -----
                           C. Theodore Herbert

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice President-Human  Resources of Telephone and Data
                           Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States

     (XII)        (a)      Name:
                           -----
                           Peter L. Sereda

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice  President  and  Treasurer of Telephone and Data
                           Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States


     (XIII)       (a)      Name:
                           -----
                           Mark A. Steinkrauss

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois   60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice  President-Corporate  Relations of Telephone and
                           Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 6 of 7 of Appendix B

     (XIV)        (a)      Name:
                           -----
                           Edward W. Towers

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois   60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice  President-Corporate  Development and Operations
                           of Telephone and Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States

     (XV)         (a)      Name:
                           -----
                           James W. Twesme

                  (b)      Business Address:
                           -----------------
                           TDS Corporate Madison
                           8401 Greenway Boulevard
                           P.O. Box 628010
                           Middleton, Wisconsin  53562-8010

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice  President - Corporate  Finance - Telephone  and
                           Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States


     (XVI)        (a)      Name:
                           -----
                           Byron A. Wertz

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           8000 West 78th Street, Suite 400
                           Minneapolis, Minnesota  55439

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice  President - Corporate  Development of Telephone
                           and Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States




<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 7 of 7 of Appendix B

     (XVII)       (a)      Name:
                           -----
                           Gregory J. Wilkinson

                  (b)      Business Address:
                           -----------------
                           TDS Corporate Madison
                           8401 Greenway Boulevard
                           P.O. Box 628010
                           Middleton, Wisconsin  53562-8010

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Vice President and Corporate  Controller of Telephone
                           and Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States


     (XVIII)      (a)      Name:
                           -----
                           Michael G. Hron

                  (b)      Business Address:
                           -----------------
                           Sidley & Austin
                           Bank One Plaza
                           10 South Dearborn Street
                           Chicago, Illinois  60603

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Partner  of the  law  firm of  Sidley  &  Austin  and
                           Secretary of  Telephone  and Data  Systems,  Inc. and
                           Issuer

                  (d)      Citizenship:
                           ------------
                           United States



<PAGE>


Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 1 of 2 of Appendix C


                                   APPENDIX C

                          TRUSTEES OF THE VOTING TRUST
                          -----------------------------

     (I)          (a)      Name:
                           -----
                           LeRoy T. Carlson, Jr.

                  (b)      Business Address:
                           -----------------
                           Telephone and Data Systems, Inc.
                           30 North LaSalle Street
                           Suite 4000
                           Chicago, Illinois  60602

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Director,  President and Chief  Executive  Officer of
                           Telephone  and  Data  Systems, Inc.
                           Director and Chairman of Issuer

                  (d)      Citizenship:
                           -----------
                           United States

     (II)         (a)      Name:
                           -----
                           Walter C.D. Carlson

                  (b)      Business Address:
                           -----------------
                           Sidley & Austin
                           Bank One Plaza
                           10 South Dearborn Street
                           Chicago, Illinois  60603

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Partner  of the law firm of Sidley & Austin
                           Director of Telephone and Data Systems, Inc.
                           and Issuer

                  (d)      Citizenship:
                           ------------
                           United States



<PAGE>


     Schedule 13D
     Issuer:  Aerial Communications, Inc.
     Page 2 of 2 of Appendix C

     (III)        (a)      Name:
                           -----
                           Letitia G.C. Carlson
                           --------------------
                  (b)      Business Address:
                           -----------------
                           7604 Fairfax Road
                           Bethesda, Maryland 20814

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Medical Doctor
                           Director of Telephone and Data Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States

     (IV)         (a)      Name:
                           -----
                           Donald C. Nebergall

                  (b)      Residence Address:
                           ------------------
                           2919 Applewood Place, N.E.
                           Cedar Rapids, Iowa  52402

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Director  of and  Consultant  to  Telephone  and Data
                           Systems, Inc.

                  (d)      Citizenship:
                           ------------
                           United States

     (V)          (a)      Name:
                           -----
                           Melanie J. Heald

                  (b)      Business Address:
                           -----------------
                           7410 Longmeadow Road
                           Madison, Wisconsin  53717

                  (c)      Present Principal Occupation or Employment:
                           -------------------------------------------
                           Homemaker

                  (d)      Citizenship:
                           ------------
                           United States




<PAGE>



Schedule 13D
Issuer:  Aerial Communications, Inc.
Page 1 of 1 of Appendix D

                                        APPENDIX D


                                             Number of
                                         Common Shares           Percentage of
                                            Beneficially           Class
                                         Owned as of Latest      of the Issuer's
                  Name                    Practicable Date        Common Shares
                  ----                    ----------------       ---------------
     James Barr, III                                     --            --

     LeRoy T. Carlson                                 1,000            *

     LeRoy T. Carlson, Jr. (1)                        8,400            *

     Letitia G. C.  Carlson                              --            --

     Walter C. D. Carlson                             4,848            *

     Michael K. Chesney                                  --            --

     George L. Dienes                                    --            --

     Sandra L. Helton                                    --            --

     C. Theodore Herbert (1)                          6,419            *

     Rudolph E. Hornacek                                 --            --

     Michael G. Hron (1)                                 --            --

     Donald C. Nebergall                                 --            --

     H. Donald Nelson                                   200            *

     George W. Off                                    1,000            *

     Peter L. Sereda                                     --            --

     Martin L. Solomon                                   --            --

     Mark A. Steinkrauss                                500            --

     Murray L. Swanson                               10,100            *

     Edward W. Towers                                    --            --

     James W. Twesme                                  4,311            *

     Herbert S. Wander                                   --            --

     Donald W. Warkentin                            208,094            *

     Byron A. Wertz                                     300            *

     Gregory J. Wilkinson                             2,118            *
                                    ----------------------- -------------------

         Total                                      247,290            *
                                                    -------          -----
     ---------------                                -------          -----
     * Less than 1%

     1 Messrs.  Carlson,  Jr.,  Herbert and Hron are  members of the  investment
management  committee of the  Telephone  and Data  Systems,  Inc.,  Tax-Deferred
Savings  Plan  (the  "Plan").  As of  the  latest  practicable  date  for  which
information  was  available,  the Plan was the record  holder of 281,828  Aerial
Communications, Inc. Common Shares. In accordance with the position of the SEC's
Division of Corporation Finance,  such persons may be deemed to beneficially own
Common Shares held by the Plan because they may be deemed to have  investment or
voting power over such shares.  Such persons  disclaim  beneficial  ownership of
such shares, except as reported herein.


<PAGE>


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