Document:

<Page>

                                                                Exhibit 10.14(c)

                AMENDMENT NUMBER 3 TO LETTER AGREEMENT GCT-026/98

This Amendment Number 3 to Letter Agreement GCT-026/98, dated as of March 28,
2000 ("Amendment No. 3") relates to the Letter Agreement GCT-026/98 (the "Letter
Agreement"), dated June 17, 1998, as amended from time to time, between EMBRAER
- Empresa Brasileira de Aeronautica S.A. ("Embraer") and Solitair Corp.
("Buyer"), which concerns the Purchase Agreement GCT-025/98 (the "Purchase
Agreement"), as amended from time to time (collectively referred to herein as
the "Agreement"). This Amendment No. 3 is between Embraer and Buyer,
collectively referred to herein as the "Parties".

This Amendment No. 3 sets forth further agreements between Embraer and Buyer
relative to the modification of the definition of Arranging Commitment and the
extension of the date for effectiveness of Amendment No. 1 to the Letter
Agreement and Amendment No. 7 to the Purchase Agreement.

This Amendment No. 3 constitutes an amendment and modification of the Letter
Agreement. All terms defined in the Agreement and not defined herein shall have
the meaning given in the Agreement when used herein, and in case of any conflict
between this Amendment No. 3 and the Agreement, the terms of this Amendment No.
3 shall control.

NOW, THEREFORE, for good and valuable consideration, receipt of which is hereby
acknowledged, Embraer and Buyer do hereby agree as follows:

1.    In Article 6.B.4 the definition of Arranging Commitment shall be deleted
      and replaced with the following:

                                     [*]

-------------------
* Confidential

<Page>

2.    Articles 12.1 and 12.2 of Amendment No. 1 to Letter Agreement shall be
      deleted and replaced with the following:

      "12.1 The effectiveness of this Amendment No. 1 and Amendment No. 7 to the
            Purchase Agreement shall be subject to Embraer and Buyer reaching
            agreement with regards to the terms and conditions of the  [*]

      12.2  As a consequence of such condition, all deposits and progress
            payments otherwise due on or before March 29, 2000 shall be due on
            that day, or on the day Embraer and Buyer agree on the [*]
            whichever occurs first. "

-------------------
* Confidential

<Page>

IN WITNESS WHEREOF, Embraer and Buyer, by their duly authorized officers, have
entered into and executed this Amendment No. 3 to be effective as of the date
first written above.

EMBRAER - Empresa Brasileira de Aeronautica S.A.      Solitair Corp.

By    /s/ Carlos Rocha Villela                   By    /s/ Douglas J. Lambert
    -----------------------------                     -------------------------
Name:  Carlos Rocha Villela                      Name:  Douglas J. Lambert
Title: E.V.P and General Counsel                 Title: V.P.

By   /s/ Flavio Rimoli
    -----------------------------
Name:  Flavio Rimoli                             Date:
Title: Director of Contracts                     Place:

Date:  3/28/2000
Place: Sao Jose dos Campos, Brazil<Page>

                                                                Exhibit 10.14(d)

                AMENDMENT NUMBER 4 TO LETTER AGREEMENT GCT-026/98

This Amendment Number 4 to Letter Agreement GCT-026/98, dated as of June 1st,
2000 ("Amendment No. 4") relates to the Letter Agreement GCT-026/98 (the "Letter
Agreement") between EMBRAER - Empresa Brasileira de Aeronautica S.A. ("Embraer")
and Solitair Corp. ("Buyer") dated June 17, 1998, which concerns the Purchase
Agreement GCT-025/98 (the "Purchase Agreement"), as amended from time to time
(collectively referred to herein as the "Agreement"). This Amendment No. 4 is
between Embraer and Buyer, collectively referred to herein as the "Parties".

This Amendment No. 4 sets forth further agreements between Embraer and Buyer
relative to Embraer's support in the financing structure of Aircraft #6, 8, 9,
10, 11 and 12 to be provided by General Electric Capital Corporation ("GE
Capital").

This Amendment No. 4 constitutes an amendment and modification of the Letter
Agreement. All terms defined in the Agreement and not defined herein shall have
the meaning given in the Agreement when used herein, and in case of any conflict
between this Amendment No. 4 and the Agreement, the terms of this Amendment No.
4 shall control.

WHEREAS, in connection with the Parties' agreements as described above, the
Parties have agreed to modify some conditions described in the Letter Agreement
as provided below;

NOW, THEREFORE, for good and valuable consideration, receipt of which is hereby
acknowledged, Embraer and Buyer do hereby agree as follows:

1.    [*]

2.    [*]

---------
* Confidential

<Page>

      As a consequence of the [*] described in Article 1 above, the Basic
      Price of each of the Aircraft referred to in Section 1 shall be [*].
      In addition, referred to in Article 3 of the Amendment No. 1 to the
      Letter Agreement, shall be [*]. Due to such change, paragraph "B" of
      Article 3 of the Amendment No. 1 to the Letter Agreement shall be
      deleted and replaced with the following:

      "B.   [*]

3.    MISCELLANEOUS

      All other provisions of the Agreement which have not been specifically
      amended or modified by this Amendment No. 4 shall remain valid in full
      force and effect without any change.

IN WITNESS WHEREOF, Embraer and Buyer, by their duly authorized officers, have
entered into and executed this Amendment No. 4 to be effective as of the date
first written above.

---------
Confidential
<Page>

EMBRAER - Empresa Brasileira de Aeronautica S.A.      Solitair Corp.

By  /s/ Carlos Rocha Villela                      By  /s/ Douglas J. Lambert
    ------------------------------                    -------------------------
Name: Carlos Rocha Villela                             Name: Douglas J. Lambert
Title: E.V.P. and General Counsel                      Title: V.P.

By  /s/ Paulo Cesar Silva
    ------------------------------
Name: Paulo Cesar Silva                               Date:
Title: Director of Sales Financing                    Place:

Date:
Place:<Page>

                                                                Exhibit 10.14(e)

                AMENDMENT NUMBER 5 TO LETTER AGREEMENT GCT-026/98

This Amendment Number 5 to Letter Agreement GCT-026/98, dated as of October ___,
2000 ("Amendment No. 5") relates to the Letter Agreement GCT-026/98 (the "Letter
Agreement") between EMBRAER - Empresa Brasileira de Aeronautica S.A. ("Embraer")
and Solitair Corp. ("Buyer") dated June 17, 1998, which concerns the Purchase
Agreement GCT-025/98 (the "Purchase Agreement"), as amended from time to time
(collectively referred to herein as the "Agreement"). This Amendment No. 5 is
between Embraer and Buyer, collectively referred to herein as the "Parties".

This Amendment No. 5 sets forth further agreements between Embraer and Buyer
[*] of Aircraft #13 through 22 to be provided by General Electric Capital
Corporation ("GE Capital").

This Amendment No. 5 constitutes an amendment and modification of the Letter
Agreement. All terms defined in the Agreement and not defined herein shall have
the meaning given in the Agreement when used herein, and in case of any conflict
between this Amendment No. 5 and the Agreement, the terms of this Amendment No.
5 shall control.

WHEREAS, in connection with the Parties' agreements as described above, the
Parties have agreed to modify some conditions described in the Letter Agreement
as provided below;

NOW, THEREFORE, for good and valuable consideration, receipt of which is hereby
acknowledged, Embraer and Buyer do hereby agree as follows:

1.    [*]

2.    [*]

------------
* Confidential

<Page>

3.    MISCELLANEOUS

      All other provisions of the Agreement which have not been specifically
      amended or modified by this Amendment No. 5 shall remain valid in full
      force and effect without any change.

IN WITNESS WHEREOF, Embraer and Buyer, by their duly authorized officers, have
entered into and executed this Amendment No. 5 to be effective as of the date
first written above.

EMBRAER - Empresa Brasileira de Aeronautica S.A.    Solitair Corp.

By  /s/ Frederico Fleury Curado                     By  /s/ Doug Lambert
    ----------------------------                       -----------------------
Name: Frederico Fleury Curado                       Name: Doug Lambert
Title: E.V.P.                                       Title: V.P.

By  /s/ Romualdo Monteiro de Barros
    -------------------------------
Name: Romualdo Monteiro de Barros                   Date:  10/18/00
Title: E.V.P.--Defense Market                       Place: Greenwich, CT USA

Date:  10-18-00
Place: Sao Jose dos Campos, Brazil<Page>

                                                                Exhibit 10.14(f)

                AMENDMENT NUMBER 6 TO LETTER AGREEMENT GCT-026/98

This Amendment Number 6 to Letter Agreement GCT-026/98, dated as of June ___,
2001 ("Amendment No. 6") relates to the Letter Agreement GCT-026/98 (the "Letter
Agreement") between EMBRAER - Empresa Brasileira de Aeronautica S.A. ("Embraer")
and Solitair Corp. ("Buyer") dated June 17, 1998, which concerns the Purchase
Agreement GCT-025/98 (the "Purchase Agreement"), as amended from time to time
(collectively referred to herein as the "Agreement"). This Amendment No. 6 is
between Embraer and Buyer, collectively referred to herein as the "Parties".

This Amendment No. 6 sets forth further agreements between Embraer and Buyer
[*] Firm and Option Aircraft to be acquired by Buyer.

This Amendment No. 6 constitutes an amendment and modification of the Letter
Agreement. All terms defined in the Agreement and not defined herein shall have
the meaning given in the Agreement when used herein, and in case of any conflict
between this Amendment No. 6 and the Agreement, the terms of this Amendment No.
6 shall control.

WHEREAS, in connection with the Parties' agreements as described above, the
Parties have agreed to include new agreements and conditions described in the
Letter Agreement as provided below;

NOW, THEREFORE, for good and valuable consideration, receipt of which is hereby
acknowledged, Embraer and Buyer do hereby agree as follows:

1.    PROGRESS PAYMENTS

      1.1.  FIRM AIRCRAFT

      A)    The progress payments for Aircraft #23 and all subsequent Firm
            Aircraft pursuant to Articles 4.a.2, 4.a.3 and 4.a.4 of the Purchase
            Agreement [*]

      B)    In order to compensate [*] from the date such progress payment is
            due until the Actual Delivery Date for each Aircraft. To the extent
            that Buyer has already made progress payments in respect of
            Aircraft#23 to #30 in excess of the amounts required under the
            provisions hereof, Embraer and Buyer agree that Embraer has
            retroactively credited the amount of such excess in satisfaction
            of Buyer's obligations to provide overdue progress payments to
            Embraer related to Aircraft

----------
* Confidential

<Page>

            #23 to 45.

      C)    [*] referred to in items A and B above shall begin on January
            31, 2001, for each progress payment due on or before such date.

      1.2.  OPTION AIRCRAFT

      A)    Notwithstanding anything to the contrary in the Purchase Agreement,
            Buyer shall not be obligated to make any progress payments for an
            Option Aircraft until Buyer has confirmed its purchase of such
            Option Aircraft.

      B)    The progress payments for the Option Aircraft pursuant to Articles
            24.d.2, 24.d.3 and 24.d.4 of the Purchase Agreement [*] subject to
            Buyer's payment of interest pursuant to item B below.

      C)    [*] from the date such progress payment is due until the Actual
            Delivery Date for each Aircraft.

      D)    Items A and B shall not apply to Option Aircraft exercised by or for
            the benefit of any person other than Buyer.

      1.3.  GENERAL TERMS FOR INTEREST ON [*]

      A)    Amounts owed by Buyer pursuant to Articles 1.1 and 1.2 [*] and
            shall be paid by Buyer directly to Embraer upon delivery of each
            Aircraft through a separate invoice to be presented by Embraer.

      B)    Buyer shall not withhold or deduct any portion of [*] or, if it
            must do so, shall fully gross up such amounts; provided that
            Embraer shall cooperate reasonably with Buyer in executing any
            exemption forms requested by Buyer.

      1.4.  RETURN OF PROGRESS PAYMENTS

            Upon receipt of the Purchase Price for each Firm Aircraft, Embraer
            shall return the progress payments for such Aircraft, minus the
            amount of any progress payments due during the same calendar month
            for undelivered Firm Aircraft. Embraer shall apply this retained
            amount to the due progress payments.

-----------
* Confidential
<Page>

2.    CONVERSION OF THE OPTION AIRCRAFT

      2.1.  The first paragraph of item 13.a of Amendment No. 1 to Letter
            Agreement shall be deleted and replaced with the following:

            "a.   DECISION TO CONVERT

            Buyer may at Buyer's option, elect to convert each of the Firm
            Aircraft #31-45 and each of the Option Aircraft to EMB-145 model
            EMB-140 LR aircraft (the "EMB-140 Aircraft") in groups of two (2)
            Aircraft ("Conversion Group"), provided that Buyer informs Embraer
            by means of a written notice ("Election Notice") no later than
            fifteen (15) months prior to the Contractual Delivery Date of the
            first Aircraft of each relevant Conversion Group, of its intention
            to exercise such conversion right. Buyer may elect to convert any
            number of Aircraft within each Conversion Group to EMB-140
            Aircraft."

3.    [*]

      3.1.  [*]

      3.2.  [*]

4.    MISCELLANEOUS

      All other provisions of the Agreement, which have not been specifically
      amended or modified by this Amendment No. 6 shall remain valid in full
      force and effect without any change.

---------------
* Confidential
<Page>

IN WITNESS WHEREOF, Embraer and Buyer, by their duly authorized officers, have
entered into and executed this Amendment No. 6 to be effective as of the date
first written above.

EMBRAER - Empresa Brasileira de Aeronautica S.A.      Solitair Corp.

By /s/ Frederico Fleury Curado                        By /s/ Jay Maymudes
   ----------------------------                          -----------------
Name: Frederico Fleury Curado                         Name: Jay Maymudes
Title: E.V.P.--Airline Market                         Title: V.P.

By /s/ Flavio Rimoli
  ----------------------------
Name: Flavio Rimoli                                   Date: 10/22/01
Title: Director of Contracts                          Place: Greenwich, CT

Date:  10/22/01
Place: Sao Jose dos Campos, Brazil

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00034-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00034-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00034-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00034-of-00352.parquet"}]]