Document:

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                                                                   Exhibit 10.14

                              AMENDED AND RESTATED
                           LETTER AGREEMENT GCT-026/98

This Amended and Restated Letter of Agreement GCT-026/98 ("Agreement") dated
April 19, 2002, is an agreement between Republic Airways Holdings, Inc.
("Buyer") with its principal place of business at 2500 S. High School Road,
Indianapolis, Indiana 46241, United States, and EMBRAER - EMPRESA BRASILEIRA DE
AERONAUTICA S.A. ("Embraer"), with its principal place of business at Sao Jose
dos Campos, Sao Paulo, Brazil, relating to the Amended and Restated Purchase
Agreement GCT-025/98 dated April __, 2002 (the "Purchase Agreement") for the
purchase by Buyer of up to thirty-seven (37) new EMB-145 LR aircraft (the
"Aircraft").

This Agreement constitutes an amendment and modification of the Purchase
Agreement, and it sets forth additional agreements of the Parties with respect
to the matters set forth in the Purchase Agreement. All terms defined in the
Purchase Agreement shall have the same meaning when used herein, and in case of
any conflict between this Agreement and the Purchase Agreement, this Agreement
shall govern.

Solitair Corp. ("Solitair") has assigned to Buyer all of Solitair's rights and
obligations under the Purchase Agreement DCT-025/98 between Embraer and Solitair
(as amended before the date of the Purchase Agreement, the "Original Purchase
Agreement") and Letter Agreement GCT-026/98 dated as of June 17, 1998 between
Embraer and Solitair (as amended before the date of this Agreement, the
"Original Letter Agreement") with respect to the sale of certain unexercised
option aircraft, and in connection with such assignment, Solitair has also
assigned to Buyer its remaining rights with respect to the aircraft delivered
and to be delivered under the Original Purchase Agreement.

Buyer and Embraer now desire to amend and restate certain agreements relating to
such Aircraft, as previously provided in the Original Letter Agreement.

At the time this Agreement becomes effective, neither Buyer nor Embraer shall
have any rights against or obligations to the other pursuant to the Original
Letter Agreement.

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

1.    BRAZILIAN EXPORT SUPPORT

      A.    Securing Availability of [*] Benefits

            [*] shall secure availability of Brazilian Export Financing Program
            [*] on behalf of and for the benefit of Buyer for the Aircraft by
            obtaining [*] for those Aircraft.

      B.    Amount of [*] Benefits

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*Confidential

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Certain portions of this exhibit have been omitted pursuant to a request for
confidential treatment under Rule 406 of the Securities Act of 1933. The
omitted materials have been filed separately with the Securities and Exchange
Commission.

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            The [*] Benefits [*] of [*] of [*] which may be charged by a
            permitted financier of the Aircraft.

            To the extent that the [*] Benefits are reduced below the level
            referred to above, withdrawn or canceled, [*] , either:

            B.1. when and if permitted by the then existing governmental rules
            and regulations, [*] or

            B.2. [*]
            [*]

2.    SPARE PARTS CREDITS

      Embraer will provide Buyer a spare parts (except engines, engine related
      parts and APU) and ground support equipment credit of [*] . This spare
      parts credit shall be made available to Buyer upon [*] If for any reason
      the Purchase Agreement is partially terminated in relation to any
      Aircraft, then Buyer shall pay [*] per each applicable terminated EMB-145
      Aircraft and/or [*] per each EMB-140 Aircraft for which such Spare Parts
      Credit for any reason has already been provided to Buyer. Each Spare Part
      Credit shall only be made available to Buyer in the event there is [*] .
      If any such credit is not so made available to Buyer because [*] , such
      credit shall be made available [*] . Any portion of such credit which
      remains unused [*] shall be deemed to have been waived by Buyer, and no
      further compensation shall be due [*] for such Spare Parts Credit. Such
      Spare Parts Credit shall be applied against [*]

3.    ADDITIONAL SPARES

      Notwithstanding the value of Spares stated in Article 3.A.2 of the
      Purchase Agreement, the Buyer may acquire Spares in excess of such stated
      value, subject to availability of such additional Spares, from Embraer
      ("Additional Spares"). However, such Additional Spares [*] .

4.    FINANCING

      A.    In the event Buyer elects to assign its rights to an Aircraft to a
            financing institution as provided for in Article 16.a of the
            Purchase Agreement, it shall provide Embraer with written notice of
            the name, address, telephone number and contact person of such
            financing institution within [*] prior to intended date of the
            assignment; provided that Buyer shall make reasonable efforts to
            provide earlier notice. Buyer shall also timely provide Embraer with
            any other information Embraer may reasonably request in regard to
            such financing institution. Embraer

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            shall inform Buyer whether such financing institution has been
            approved by Embraer to the extent required pursuant to Article 16 of
            the Purchase Agreement within [*] after its receipt of such notice.

      B.    Notwithstanding anything to the contrary in Article 3 or 24 of the
            Purchase Agreement, the Basic Prices for the Aircraft shall [*] if
            Buyer does not [*] The Basic Prices for the Aircraft shall also [*]

      C.    For each Aircraft (excluding Aircraft for which [*] issued), Embraer
            shall offer a [*] Such [*] will be based on the determination of [*]
            using [*] The Buyer will use commercially reasonable efforts to
            provide Embraer with reasonable notice of [*] provided, however, any
            failure to provide such notice shall [*] in accordance with the
            terms of this Agreement.

            C.1   The obligation of Embraer to grant [*] contingent upon Buyer's
                  [*]

            C.2   If Buyer has made the determination set forth above, Embraer
                  shall then [*] provided however, that Buyer shall make
                  reasonable efforts to minimize [*]

            C.3   If, on a case by case basis, Buyer is unable to use an [*] in
                  the financing of an Aircraft after making reasonable efforts
                  to do so, and the Buyer believes in good faith that such
                  failure is due to [*] Buyer may request that Embraer [*] In
                  such situation, Embraer shall [*]

            C.4   The terms of the [*] shall apply to [*] pursuant to this
                  Section 4.C.

      D.    Embraer shall make [*] to assist Buyer's efforts to[*] Embraer shall
            not be obliged to assist Buyer in efforts to [*]

      E.    For the avoidance of doubt, Embraer shall not be deemed to have [*]

5.    AIRCRAFT ESCALATION PRICE

      A.    The Basic Prices are subject to Embraer's standard escalation
            formula contained in Attachment "D" (the "Escalation Formula") to
            the Purchase Agreement.

      B.    The Escalation Formula applied to each Aircraft [*] for each of such
            Aircraft. However, in the event that the delivery date provided for
            any of such Aircraft is delayed for any reason not attributable to
            Embraer [*] and the Basic Price of the such relevant Aircraft shall
            be [*] in accordance with the Escalation Formula.

      C.    The calculation of [*] shall be made for the [*] applicable for each
            relevant Aircraft [*], and the result so obtained [*] shall be [*].

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      D.    The Purchase Price for such Aircraft shall be determined as follows:

            (i)   If [*], the Aircraft Purchase Price shall be equal to [*], or:

            (ii)  If [*], but [*], the [*] shall be [*] and the applicable
                  Aircraft Purchase Price shall be equal to [*], or:

            (iii) If [*], the applicable Aircraft Purchase Price shall be equal
                  to [*], and the result so obtained shall be [*].

      E.    The conditions described above shall only be applicable in the event
            [*]. In the event, in any of the situations described above, [*],
            the applicable Aircraft Purchase Price will be equal to the
            applicable Aircraft Basic Price [*]."

6.    SPARE PARTS [*]

      Embraer shall at all times provide Buyer [*] its published base spare
      parts catalogue price list which includes only Embraer-made parts. This
      [*] shall be applicable for the [*] . . Such [*] shall be applicable for
      spare parts purchase orders to be placed at Embraer after the signature of
      this Agreement.

7.    ADDITIONAL AIRCRAFT [*]

      Embraer shall provide an [*] in accordance with the terms and conditions
      specified in Schedule "3-A" to this Agreement.

      Embraer shall provide a [*] and [*] in accordance with the terms and
      conditions specified in Schedules "4" and "5", respectively. These [*]
      shall apply to [*].

8.    [*]

      A.    DECISION TO [*]

            Buyer may at Buyer's option, elect to [*] (as defined below) [*] ,
            provided that Buyer informs Embraer by means of a written notice
            ("Election Notice") no later than the date which Buyer confirms the
            exercise of its option to purchase such Option Aircraft, according
            to Article 24 of the Purchase Agreement, of its intention to
            exercise such [*] right. Buyer may elect to [*] .

            EMB-140 Aircraft - shall mean the EMB-145, Model EMB-135 [*]
            Aircraft, or, where there is more than one of such Aircraft, each of
            such Aircraft, manufactured by Embraer, for sale to Buyer pursuant
            to the Purchase Agreement, according to Technical Description
            TD-140/002, dated April 2000, the Aircraft Specific Configuration,
            Finishing and Registration Marks described in Schedule "6" to this
            Letter Agreement, as may be amended from time to time by Buyer at
            its expense as specified in Article 11 of the Purchase Agreement.
            The Aircraft is composed entirely of vendor parts and parts

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            manufactured by Embraer and Embraer subcontractors, and the parts
            manufactured by Embraer and Embraer subcontractors shall have
            Embraer part numbers.

            Any initial deposit or progress payment paid by Buyer pursuant to
            Articles 4.a or 24.d of the Purchase Agreement with respect to any
            Aircraft [*] , shall be [*] in the same manner as [*] .

      B.    APPLICATION OF PURCHASE AGREEMENT [*] :

            Except as provided in this paragraph "b", all terms and conditions
            applicable for the Aircraft shall also be applicable MUTATIS MUTANDI
            [*] .

            B.1.  The unit Basic Price [*] shall be [*] in [*] economic
                  conditions in the configuration, specification and
                  installations specified in Schedule "6", provided that there
                  will be [*] as described in Section 4.c of this Agreement and
                  any other [*] agreed to in writing between Embraer and Buyer.
                  In the event Buyer enters into a [*] for [*] , the [*] Basic
                  Price shall be [*]

            B.2.  Schedule "3-B" shall apply to the [*] Aircraft in lieu of
                  Schedule "3-A".

9.    [*] PAYMENTS

9.1   FIRM AIRCRAFT

      A.    [*] payments for the Firm Aircraft pursuant to Articles [*] of the
            Purchase Agreement shall be [*], subject to [*] pursuant to [*]
            below.

      B.    In order to [*], from the date such [*] payment is due until the
            Actual Delivery Date for each Aircraft.

9.2   OPTION AIRCRAFT

      A.    Notwithstanding anything to the contrary in the Purchase Agreement,
            Buyer shall [*] until [*].

      B.    The [*] payments for the Option Aircraft pursuant to Articles [*] of
            the Purchase Agreement shall be [*], subject to [*] pursuant to [*]
            below.

      C.    In order to [*], from the date such [*] payment is due until the
            Actual Delivery Date for each Aircraft.

      D.    Items A and B shall not apply to Option Aircraft [*].

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9.3   GENERAL TERMS FOR [*] PROGRESS PAYMENTS

      A.    Amounts owed by Buyer pursuant to this Article 9 shall not [*] and
            shall be paid by Buyer directly to Embraer upon [*]

      B.    Buyer shall not withhold or deduct any portion of [*] ; provided
            that Embraer shall cooperate reasonably with Buyer in executing any
            [*] forms requested by Buyer.

9.4   [*] PROGRESS PAYMENTS

      Upon  receipt  of the  Purchase  Price for each Firm  Aircraft,  Embraer
      shall [*] Embraer shall [*]

10.   BRIDGE FINANCING

      Embraer has provided a temporary financing structure ("Bridge Financing")
      for six (6) EMB-135 [*] model aircraft to Chautauqua in accordance with
      the terms of the letter agreement, interim loan agreement, aircraft
      security agreement and security agreement supplement agreed between
      Embraer and Chautauqua for each such Aircraft. Any breach, default or
      failure to perform under the Bridge Financings by Chautauqua shall be a
      breach of the Purchase Agreement. Any breach, default or failure to
      perform by Buyer under the Purchase Agreement shall be an "Event of
      Default" under the Bridge Financings, as such term is defined in the
      Bridge Financing agreements.

11.   [*]

      Buyer is entitled to [*] spare parts [*] per each Aircraft for Chautauqua,
      up to a maximum of [*] A portion of such [*] spare parts [*] shall be made
      available to Buyer in [*] , with additional [*] to be made available on a
      schedule agreed by Embraer and Buyer that increases [*] after the first
      delivery of [*] spare parts.

      The identification of the parts which will be included [*] shall be
      mutually agreed upon by the Parties. During [*] , Embraer shall have the
      right to [*] , however, keeping the [*] level.

      Availability of [*] is conditioned upon Buyer, Chautauqua and Embraer's
      designee in the United States of America entering into a [*] agreement to
      be negotiated by Buyer and Embraer's designee in good faith within [*]
      days following execution of this Agreement and Embraer's and Buyer's
      performance of their obligations thereunder. Nevertheless, the following
      conditions precedent shall be fulfilled to the reasonable satisfaction of
      Embraer and its designee:

      a.    Buyer/Chautauqua  has  provided  the  appropriate  fillings of [*]
      and any other filings  reasonably  requested by Embraer,  as to evidence
      [*]; and

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      b.    Buyer/Chautauqua  has provided  evidence of appropriate  insurance
      coverage for [*]. Such insurance shall, among other  stipulations,  [*].

      The Parties furthermore agree that Buyer/Chautauqua shall pay Embraer a
      [*], based upon [*] The [*] will be [*] for a period of [*] and shall
      decrease during the [*] according to the same schedule by which it
      increased during the first [*] Upon expiration of such [*], Chautauqua
      may [*] or [*].

      Buyer/Chautauqua shall pay Embraer the purchase price of [*] spare part
      within [*] days of Chautauqua's [*] of the [*] spare [*]. The price for
      the [*] spare parts shall be based upon [*] Embraer shall [*] as to be
      provided for in the [*] Agreement in order to [*] through the [*], except
      as provided to the contrary in this Section 10.

      In the event,  for any reason the Purchase  Agreement is terminated with
      respect to any Aircraft, [*] .

12.   SIMULATOR DATA PACKAGE

      If, on or before [*] , (i) Buyer elects to acquire its own flight
      simulator, (ii) Buyer requests from Embraer [*] , (iii) Embraer and Buyer
      have entered into a [*] agreement [*] , and (iv) Embraer, Buyer and the
      simulator vendor have entered into an agreement with respect to [*] ; then
      Embraer shall [*] , which shall include [*] . Such [*] shall be provided
      to Buyer within [*] after Buyer's notification to Embraer [*] . Buyer may
      [*] ; provided that, subject to [*] provided Embraer and [*] have entered
      into an agreement with Buyer for [*] , in form and substance satisfactory
      to Buyer.

13.   MISCELLANEOUS

      All terms and conditions of the Purchase Agreement that have not been
      specifically altered or modified hereunder shall remain in full force and
      effect and time is of the essence under this Agreement.

      [The remainder of this page has been left blank intentionally.]

[*]

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IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed
and delivered by their proper and duly authorized officers and to be effective
as of the day and year first above written.

EMBRAER - EMPRESA BRASILEIRA            REPUBLIC AIRWAYS HOLDINGS, INC.
DE AERONAUTICA S.A.

By:                                     By:
   ---------------------------             -------------------------------
Name:                                   Name:
     -------------------------               -----------------------------
Title:                                  Title:
      ------------------------                ----------------------------

By:
   ---------------------------
Name:
     -------------------------
Title:
      ------------------------

Witness:                                Witness:
        ------------------------                --------------------------

Name:                                   Name:
     ---------------------------             -----------------------------

                                                                     Page 8 of 8

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                       SCHEDULE "1" - [*] BASIC CONDITIONS

Subject to the terms and conditions of Article 4.c of [*] Embraer agrees to
provide [*] for each Aircraft [*] actual sale of the Aircraft [*], as
applicable.

1.    Embraer will [*] of the Aircraft [*] means the actual delivery date of the
      relevant Aircraft, [*]months after the Actual Delivery Date.

2.    [*] with respect to an Aircraft, [*] or such lesser amount as the Buyer
      may elect [*]

3.    [*] means the greater [*] Embraer will negotiate in good faith
      [*]Notwithstanding anything above to the contrary, in the event that the
      Buyer [*]

4.    [*] means the actual cost of [*] determined as [*] as shown on the [*]
      with respect to [*]

5.    [*] means the [*] amount payable by [*] such amount determined to be the
      difference between [*]

6.    [*] means [*]contemplating [*] between [*] Embraer shall be informed of
      all such [*] as soon as available.

7.    [*] means the period commencing on the date which is [*] of the relevant
      Aircraft and ending on the date [*] of the relevant Aircraft.

8.    Embraer shall be [*] as soon as such are received and in any event at [*]
      If Embraer and Buyer fail to agree that [*]

9.    The Aircraft shall comply in full with, [*]

10.   Embraer shall have [*] but no obligation, [*]

11.   Each Party shall bear its own costs [*]

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                       SCHEDULE "2" - [*] BASIC CONDITIONS

Subject to the terms and conditions of Article 4.c of [*] Embraer agrees to
provide [*] for each Aircraft [*] actual sale of the Aircraft [*], as
applicable.

1.    Embraer will [*] of the relevant Aircraft, [*] of the relevant Aircraft,
      [*] months after the Actual Delivery Date.

2.    [*] with respect to an Aircraft, [*] or such lesser amount as the Buyer
      may elect [*]

3.    [*] means the greater [*] Embraer may, but will not be under the
      obligation to, [*]

4.    [*] means [*] provided, however, [*] Embraer shall be informed of [*]

5.    [*] means [*]

6.    Embraer shall be informed of [*] as soon as such [*]

7.    [*] means the actual [*] determined as[*] as shown on the [*], reduced by
      [*] further reduced by [*]

8.    [*] means the maximum amount payable [*] as the case may be, [*] such
      amount determined to be the difference between [*]

9.    Embraer shall have [*] but no obligation, [*]

10.   The Aircraft shall comply in full with, or exceed, the [*] Buyer shall
      provide Embraer with an [*]

11.   Each Party shall bear its own costs [*]

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                     SCHEDULE "3-A" - EMB-145 AIRCRAFT [*]

1.    [*]

      Embraer, subject to the conditions and limitations hereby expressed, and
      considering the Aircraft with a maximum takeoff weight of [*] pounds ([*]
      kg) and equipped with EMBRAER furnished Rolls-Royce Allison AE 3007A1
      engines, [*] each Aircraft as follows:

      a.    On the Aircraft Actual Delivery Date, the Aircraft will [*]

            a.1   [*]

                  [*] a gross weight of [*] pounds ([*] Kg) in a standard day
                  (ISA), at an altitude of [*] feet, at [*] KTAS using not more
                  than [*] :

                  [*]

            A.2   [*]

                  a.2.1 The [*] for a stage length of [*] nautical miles in
                        still air, shall [*]

                  [*]

                        Note: the above [*] is subject to the same tolerance
                        applicable to the M.E.W. pursuant to Paragraph a.3
                        below.

                        The above [*] is based on the following conditions and
                        operating rules:

                        Stage Length:
                        The stage is defined as [*] .

                        Takeoff: [*]

                        Climbout Maneuver:
                        Following the takeoff [*] , the Aircraft [*] while
                        climbing to [*] feet above the departure airport
                        altitude and [*] .

                        Climb:
                        The Aircraft climbs from [*] feet above the departure
                        airport altitude to [*] feet altitude [*] . The Aircraft
                        then accelerates [*] . The climb continues at [*] until
                        [*] feet is reached. The climb continues at [*] to
                        cruise altitude. The temperature is [*] during the
                        climb.

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                        [*] is used throughout the climb.

                        Cruise:
                        The Aircraft cruises at [*] .
                        The cruise altitude is [*]  feet.
                        The temperature is [*]  during cruise.
                        The cruise thrust [*] .

                        Descent:
                        The Aircraft descends [*] .
                        The descent continues [*] to an altitude of [*] feet.
                        The temperature is [*] during descent.

                        Approach and Landing Maneuver:
                        The Aircraft [*] while [*], then descends and lands. The
                        destination airport elevation is at sea level.

                        Fixed Allowances:
                        For the  purpose  of [*] and  for the  purpose  of [*],
                        the following shall be used [*]:

                        Taxi-out fuel:    [*].

                        Takeoff and Climbout Maneuver fuel:  [*] .

                        Approach and Landing Maneuver fuel: [*] .

                        Taxi-in fuel (shall be consumed from the reserve fuel):
                        [*] .

                        The usable reserve fuel remaining upon completion of the
                        landing: [*] .

                  A.2.2 OPERATIONAL EMPTY WEIGHT BASIS

                        Operational empty weight (OEW) derived in accordance
                        with Paragraph a.2.3 shall be used as the basis for [*].

                  A.2.3 EMB-145 WEIGHT SUMMARY

<Table>
<Caption>

         --------------------------------------------------------------------
                              ITEMS                    WEIGHT      WEIGHT
                                                        (KG)        (LB)
         --------------------------------------------------------------------

         --------------------------------------------------------------------
<S>                                                      <C>         <C>
         [*] - M.E.W. Std. EMB-145 Aircraft              [*]         [*]
             Configuration
         --------------------------------------------------------------------
         [*] - Option to std EMB-145 Aircraft (*)        [*]         [*]
         --------------------------------------------------------------------
         [*] - M.E.W.  Customer Configuration            [*]         [*]
         --------------------------------------------------------------------

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<Caption>

         [*] - Operating Items                           [*]         [*]
         --------------------------------------------------------------------
<S>                                                           <C>        <C>

         [*] - Pilot and Copilot (180 Lb each) (**)           [*]        [*]
         --------------------------------------------------------------------
         [*] - Stewardess (140 Lb each) (**)                  [*]        [*]
         --------------------------------------------------------------------
         [*] - Engine oil                                     [*]        [*]
         --------------------------------------------------------------------
         [*] - Hydraulic Fluid                                [*]        [*]
         --------------------------------------------------------------------
         [*] - Unusable Fuel                                  [*]        [*]
         --------------------------------------------------------------------
         [*] - Apu Oil                                        [*]        [*]
         --------------------------------------------------------------------
         [*] - Toilet Fluid                                   [*]        [*]
         --------------------------------------------------------------------
         [*] - Water                                          [*]        [*]
         --------------------------------------------------------------------
         [*] - Flight Kit                                     [*]        [*]
         --------------------------------------------------------------------
         [*] - Crew Baggage                                   [*]        [*]
         --------------------------------------------------------------------
         [*] - Catering Standard                              [*]        [*]
         --------------------------------------------------------------------
         [*] - Pass. Serv. Equip.                             [*]        [*]
         --------------------------------------------------------------------
         [*] - 2nd Attendant                                  [*]        [*]
         --------------------------------------------------------------------
         [*] - O. E. W.  Customer Configuration          [*]         [*]
         --------------------------------------------------------------------
</Table>

            REMARKS:

            (*) See [*] .
            (**) In accordance with [*]

                  A.2.4 CUSTOMER OPTIONS TABLE:

     ---------------------------------------------------------------------------
                               ITEMS                      OPT  WEIGHT     WEIGHT
                                                                (KG)       (LB)
     ---------------------------------------------------------------------------

        A) OPTIONS TO STD AVIONIC CONFIGURATION
     ---------------------------------------------------------------------------
           [*]
           ---------------------------------------------------------------------

        B) OPTIONAL SYSTEM / OTHER EQUIPMENT
           ---------------------------------------------------------------------
           [*]
           ---------------------------------------------------------------------

        C) INTERIOR OPTIONAL ITEMS
           ---------------------------------------------------------------------
           [*]
           ---------------------------------------------------------------------

     ---------------------------------------------------------------------------
                                SUB-TOTAL  (OPTIONS STD A/C)    [*]        [*]

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

            [*]

      A.3   [*]

2.    AIRCRAFT CONFIGURATION

      2.1   The [*] are based on the EMB-145 Basic Aircraft configuration as
            defined

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            in the Technical Description TD-145/010 dated January 1998, plus
            specific Buyer configuration options as defined in Attachment "A" to
            the Purchase Agreement, (hereinafter referred to as the Detail
            Specification). Appropriate adjustment [*] for changes in such
            Detail Specification approved in writing by the Buyer and Embraer.
            Such adjustments shall be accounted for by Embraer in its evidence
            [*].

            In the event a change is made to any law, governmental regulation or
            requirement, or in the interpretation of any such law, governmental
            regulation or requirement that affects the certification basis for
            the Aircraft, and as a result thereof, a change is made to the
            configuration [*].

      2.2   The [*] of Paragraph 1.a.2.1 and the Manufacturer's Empty Weight [*]
            of Section 1.a.3 shall be adjusted by Embraer for the following in
            its evidence [*]:

            (1)   Changes to the Detail Specification including Change Requests,
                  Master Changes, Change Orders or any other changes mutually
                  agreed upon between the Buyer and Embraer.

            (2)   The difference between the component weight allowances given
                  in the appropriate section of the Detail Specification and the
                  actual weights.

3.    [*]  CONDITIONS

      3.1   [*] performance data are based on the ICAO International Standard
            Atmosphere (ISA) and specified variations therefrom; altitudes are
            pressure altitudes.

      3.2   The FAA Regulations (FAR) referred to in this Schedule are, unless
            otherwise specified, the EMB-145 Certification Basis regulations
            specified in the Type Certificate Data Sheet. [*] .

      3.3   The cruise specific air range, [*] include allowances for normal
            electrical power extraction and normal operation of the air
            conditioning system. Normal power extraction shall be defined as not
            less than a [*] total electrical and hydraulic loads. Normal
            operation of the air conditioning system shall be defined as
            operation in the automatic mode, with the temperature control set to
            maintain a nominal cabin temperature of 75(Degree)F, and all air
            conditioning systems operating normally. This operation nominally
            allows a sea level cabin altitude to be maintained up to [*] feet
            and a maximum cabin pressure differential of [*] pounds per square
            inch at higher altitudes, with a nominal Aircraft cabin ventilation
            rate of [*] cubic feet per minute at [*] ft including passenger
            cabin recirculation (nominal recirculation is [*] percent not
            considering gasper flow). The APU is turned off unless otherwise
            specified.

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      3.4   The cruise specific air range, speed [*] are based on [*].

      3.5   Performance, where applicable, is based on a fuel Lower Heating
            Value (LHV) of [*] BTU per pound and a fuel density of [*] pounds
            per U.S. gallon.

4.    PARTIES' OBLIGATIONS [*]

      RELATIVE TO THE [*]  STATED IN PARAGRAPH 1.a above:

      4.1   During the [*] in accordance with Article [*] of the Purchase
            Agreement, Buyer shall check the Aircraft [*] , by using the EMB-145
            Aircraft Flight Manual (AFM) and by comparing the flight test data,
            at the atmospheric conditions prevailing during the flight, with the
            information presented in the EMB-145 Supplementary Performance
            Manual (SPM). [*] are in accordance with both manuals above
            mentioned, taking into consideration the established tolerances.

      4.2   [*] obligations in respect to the [*] , are limited to [*] should it
            be reasonably verified that [*]

      4.3   In case during the above mentioned [*] , it is proven that the
            Aircraft  [*] does [*] , but  Buyer [*] , then  Embraer  shall [*]
            with respect to such [*].

      4.4   Upon [*] , all obligations of Embraer regarding the Aircraft [*].

5.    [*]

      5.1   [*] Section 1.a shall be based on the conditions specified in that
            section, the Aircraft configuration of Section 2 and the [*]
            conditions of Section 3.

      5.2   [*] the takeoff, landing, [*] shall be based on the FAA-approved
            Airplane Flight Manual for the EMB-145.

      5.3   [*] shall be established by calculations based on the comparison
            mentioned in Section 4.1 above.

      5.4   The data derived from tests shall be adjusted as required by
            conventional methods of correction, interpolation or extrapolation
            in accordance with established engineering practices to show
            compliance with provisions of Section 1.a.

      5.5   [*] shall be based on information in the appropriate approved weight
            and balance manual, or associated document or report.

      5.6   [*] set forth in this Schedule does not depend on the engine meeting
            [*] contained in the engine specification.

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6.    [*]

      6.1   [*] applicable to the Aircraft are those set forth in this document.
            The [*] set forth herein are established between Buyer and Embraer
            and may not be transferred or assigned to others, unless by previous
            written consent of Embraer.

      6.2   THE [*] BUYER HEREBY WAIVES, RELEASES AND RENOUNCES, ALL OTHER
            RIGHTS, CLAIMS, DAMAGES AND REMEDIES OF BUYER AGAINST EMBRAER OR ANY
            ASSIGNED OF EMBRAER, EXPRESS OR IMPLIED, ARISING BY LAW OR
            OTHERWISE[*] .

      6.3   The terms and conditions [*] do not alter, modify or impair, in any
            way, the terms and conditions of Attachment C (EMB-145 AIRCRAFT
            WARRANTY CERTIFICATE) to the Purchase Agreement.

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                                 SCHEDULE "3-B"
                             EMB 140 - AIRCRAFT [*]

1.    [*]

      Embraer, subject to the conditions and limitations hereby expressed, and
      considering the Aircraft with a maximum takeoff weight of [*] pounds ([*]
      kg) and equipped with EMBRAER furnished Rolls-Royce Allison AE 3007A1/3
      engines, [*] each Aircraft as follows:

      A.    On the Aircraft Actual Delivery Date, the Aircraft will [*]:

            A.1   [*]

                        [*] a gross weight of [*]pounds ([*]Kg) in a standard
                        day (ISA), at an altitude of [*]feet, at [*]KTAS using
                        not more than [*]:

                        [*]
                        [*]
                        [*]

            A.2   [*]

                  A.2.1 The [*] for a stage length of [*]nautical miles in still
                        air, shall [*]:

                        [*]

                        Note: The above [*] is subject to the same tolerance
                              applicable to the MEW pursuant to Paragraph a.3
                              below.

                        The above [*] is based on the following conditions and
                        operating rules:

                        Stage Length:
                        The stage is defined as [*].

                        Takeoff:
                        [*].
                        [*].
                        [*].

                        Climbout Maneuver:
                        Following the takeoff [*], the EMB-140 Aircraft [*]
                        while climbing to [*] feet above the departure airport
                        altitude and [*].

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                        Climb:
                        The EMB-140 Aircraft climbs from [*] feet above the
                        departure airport altitude to [*]feet altitude at [*].
                        The EMB-140 Aircraft then accelerates [*]. The climb
                        continues at [*] until [*] feet is reached. The climb
                        continues at [*] to cruise altitude. The temperature is
                        [*] during the climb. [*] is used throughout the climb.

                        Cruise:
                        The EMB-140 Aircraft cruises at [*].
                        The cruise altitude is [*] feet.
                        The temperature is [*] during cruise.
                        The cruise thrust [*].

                        Descent:
                        The EMB-140 Aircraft descends [*]. The descent continues
                        [*] to an altitude of [*] feet. The temperature is [*]
                        during descent.

                        Approach and Landing Maneuver:
                        The EMB-140 Aircraft [*] while [*], then descends and
                        lands. The destination airport elevation is at sea
                        level.

                        Fixed Allowances:
                        For the purpose of [*] and for the purpose of [*], the
                        following shall be used [*]:

                        Taxi-out fuel:    [*].

                        Takeoff and Climbout Maneuver fuel:  [*].

                        Approach and Landing Maneuver fuel: [*].

                        Taxi-in fuel (shall be consumed from the reserve fuel):
                        [*].

                        The usable reserve fuel remaining upon completion of the
                        landing: [*].

                  A.2.2 OPERATIONAL EMPTY WEIGHT BASIS

                        Operational empty weight (OEW) derived in accordance
                        with Paragraph a.2.3 shall be used as the basis [*].

                  A.2.3 EMB-140 WEIGHT SUMMARY

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<Table>
<Caption>

         --------------------------------------------------------------------
                               ITEMS                       [*]       [*]
         --------------------------------------------------------------------
<S>                                                        <C>       <C>
           1 - M.E.W Std. EMB-140 Aircraft                 [*]       [*]
               Configuration(*)
         --------------------------------------------------------------------

         --------------------------------------------------------------------
           2 - Option to std EMB-140 Aircraft (**)         [*]       [*]
         --------------------------------------------------------------------

         --------------------------------------------------------------------
           3 - M.E.W.  Customer Configuration LR           [*]       [*]
               version
         --------------------------------------------------------------------

         --------------------------------------------------------------------
           4 - Operating Items                             [*]       [*]
         --------------------------------------------------------------------
           a - Pilot and Copilot (180 Lb each) (***)          [*]        [*]
         --------------------------------------------------------------------
           b - Stewardess (140 Lb each) (***)                 [*]        [*]
         --------------------------------------------------------------------
           c - Engine oil                                     [*]        [*]
         --------------------------------------------------------------------
           d - Hydraulic Fluid                                [*]        [*]
         --------------------------------------------------------------------
           e - Unusable Fuel                                  [*]        [*]
         --------------------------------------------------------------------
           f - Apu Oil                                        [*]        [*]
         --------------------------------------------------------------------
           g - Toilet Fluid                                   [*]        [*]
         --------------------------------------------------------------------
           h - Water                                          [*]        [*]
         --------------------------------------------------------------------
           i - Flight Kit                                     [*]        [*]
         --------------------------------------------------------------------
           j - Crew Baggage                                   [*]        [*]
         --------------------------------------------------------------------
           k - Catering Standard                              [*]        [*]
         --------------------------------------------------------------------
           l - Pass. Serv. Equip.                             [*]        [*]
         --------------------------------------------------------------------
           m - 2nd Attendant                                  [*]        [*]
         --------------------------------------------------------------------

         --------------------------------------------------------------------
           5 - O. E. W.  Customer Configuration LR         [*]       [*]
               version
         --------------------------------------------------------------------

         --------------------------------------------------------------------
</Table>

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            REMARKS:

            (*) See [*].
            (**) In accordance with [*]

            A.2.4 CUSTOMER OPTIONS TABLE:

<Table>
<Caption>

     ------------------------------------------------------------------------------
                               ITEMS                      OPT     WEIGHT     WEIGHT
                                                                   (KG)       (LB)
     ------------------------------------------------------------------------------
        A) OPTIONS TO STD AVIONIC CONFIGURATION

     ------------------------------------------------------------------------------
<S>                                                       <C>       <C>        <C>
           [*]                                            [*]       [*]        [*]
           ------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------

<Caption>
        B) OPTIONAL SYSTEM / OTHER EQUIPMENT
     ------------------------------------------------------------------------------
<S>                                                       <C>       <C>        <C>
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------

<Caption>

        C) INTERIOR OPTIONAL ITEMS
     ------------------------------------------------------------------------------
<S>                                                       <C>       <C>        <C>
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------

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     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------
           [*]                                            [*]       [*]        [*]
     ------------------------------------------------------------------------------

     ------------------------------------------------------------------------------
                     SUB-TOTAL (OPTIONS STD A/C)          [*]       [*]        [*]
     ------------------------------------------------------------------------------
</Table>
            [*]

      A.3   [*]

            a.3.1 [*]:

                  [*]
                  [*]
                  [*]

2.    EMB-140 AIRCRAFT CONFIGURATION

      2.1   The [*] are based on the EMB-140 Basic Aircraft configuration as
            defined in the Technical Description TD-140/002 dated April 2000,
            plus specific Buyer configuration options as defined in Attachment
            "A" to the Purchase Agreement, (hereinafter referred to as the
            Detail Specification). Appropriate adjustment [*] for changes in
            such Detail Specification approved in writing by the Buyer and
            Embraer. Such adjustments shall be accounted for by Embraer in its
            evidence [*].

            In the event a change is made to any law, governmental regulation or
            requirement, or in the interpretation of any such law, governmental
            regulation or requirement that affects the certification basis for
            the EMB-140 Aircraft, and as a result thereof, a change is made to
            the configuration [*].

      2.2   The [*] of Paragraph 1.a.5 and the Manufacturer's Empty Weight [*]
            of Section 1.a.6 shall be adjusted by Embraer for the following in
            its evidence [*]:

            (1)   Changes to the Detail Specification including Change Requests,
                  Master Changes, Change Orders or any other changes mutually
                  agreed upon between the Buyer and Embraer.

            (2)   The difference between the component weight allowances given
                  in the appropriate section of the Detail Specification and the
                  actual weights.

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3.    [*] CONDITIONS

      3.1   [*] performance data are based on the ICAO International Standard
            Atmosphere (ISA) and specified variations therefrom; altitudes are
            pressure altitudes.

      3.2   The FAA Regulations (FAR) referred to in this Schedule are, unless
            otherwise specified, the EMB-140 Certification Basis regulations
            specified in the Type Certificate Data Sheet. [*].

      3.3   The [*] are based on [*] unless otherwise specified. The [*] is
            based on [*] unless otherwise specified. The [*] procedure will be
            used [*] as required. The [*] data is based on the use of [*].

      3.4   The cruise specific air range, speed [*] include allowances for
            normal electrical power extraction and normal operation of the air
            conditioning system. Normal power extraction shall be defined as not
            less than a[*] total electrical and hydraulic loads. Normal
            operation of the air conditioning system shall be defined as
            operation in the automatic mode, with the temperature control set to
            maintain a nominal cabin temperature of 75(DEGREE)F, and all air
            conditioning systems operating normally. This operation nominally
            allows a sea level cabin altitude to be maintained up to [*] feet
            and a maximum cabin pressure differential of [*] pounds per square
            inch at higher altitudes, with a nominal EMB-140 Aircraft cabin
            ventilation rate of [*]cubic feet per minute at [*] ft including
            passenger cabin recirculation (nominal recirculation is [*] percent
            not considering gasper flow). The APU is turned off unless otherwise
            specified.

      3.5   The cruise specific air range, speed [*] are based on an EMB-140
            Aircraft [*].

      3.6   Performance, where applicable, is based on a fuel Lower Heating
            Value (LHV) of [*] BTU per pound and a fuel density of [*] pounds
            per U.S. gallon.

4.    PARTIES' OBLIGATIONS [*]

      RELATIVE TO THE [*] STATED IN PARAGRAPH 1.a above:

      4.1   During the [*] in accordance with Article [*] of the Purchase
            Agreement, Buyer shall check the EMB-140 Aircraft [*], by using the
            EMB-140 Aircraft Flight Manual (AFM) and by comparing the flight
            test data, at the atmospheric conditions prevailing during the
            flight, with the information presented in the EMB-140 Supplementary
            Performance Manual (SPM). [*] are in accordance with both manuals

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            above mentioned, taking into consideration the established
            tolerances.

      4.2   [*]  obligations  in respect to the [*], are limited to [*] should
            it be reasonably verified that [*]

      4.3   In case during the above mentioned [*], it is proven that the
            EMB-140 Aircraft [*] does [*], but Buyer [*], then Embraer shall [*]
            with respect to such [*].

      4.4   Upon [*], all obligations of Embraer regarding the Aircraft [*].

5.    [*]

      5.1   [*] Section 1.a shall be based on the conditions specified in that
            section, the EMB-140 Aircraft configuration of Section 2 and the [*]
            conditions of Section 3.

      5.2   [*] the takeoff, landing, [*] shall be based on the FAA-approved
            Airplane Flight Manual for the EMB-140.

      5.3   [*] shall be established by calculations based on the comparison
            mentioned in Section 4.1 above.

      5.4   The data derived from tests shall be adjusted as required by
            conventional methods of correction, interpolation or extrapolation
            in accordance with established engineering practices to show
            compliance with provisions of Section 1.a.

      5.5   [*] shall be based on information in the appropriate approved weight
            and balance manual, or associated document or report.

      5.6   [*] set forth in this Schedule does not depend on the engine meeting
            [*] contained in the engine specification.

6.    [*]

      6.1   [*] applicable to the EMB-140 Aircraft are those set forth in this
            document. The [*] set forth herein are established between Buyer and
            Embraer and may not be transferred or assigned to others, unless by
            previous written consent of Embraer.

      6.2   THE [*] BUYER HEREBY WAIVES, RELEASES AND RENOUNCES, ALL OTHER
            RIGHTS, CLAIMS, DAMAGES AND REMEDIES OF BUYER AGAINST EMBRAER OR ANY
            ASSIGNED OF EMBRAER, EXPRESS OR IMPLIED, ARISING BY LAW OR
            OTHERWISE[*].

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      6.3   The terms and conditions [*] do not alter, modify or impair, in any
            way, the terms and conditions of Attachment C (AIRCRAFT WARRANTY
            CERTIFICATE) to the Purchase Agreement.

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                               SCHEDULE "5" - [*]

References to "Aircraft" in this [*] shall be deemed to include all EMB-145 and
EMB-135KL model aircraft delivered (or to be delivered) to Chautauqua as
operator pursuant to Purchase Agreement DCT-025/98 between Embraer and Solitair
Corp., and all aircraft to be delivered to Chautauqua as operator pursuant to
the Amended and Restated Purchase Agreement DCT-025/98 between Embraer and
Republic Airways Holdings, Inc. The first [*] period under [*] shall be deemed
[*]

I.    Definitions

      a.    Available for [*]

            An [*] which is [*] and [*] by signature of the responsible
            maintenance personnel of Chautauqua, as defined in Article II.a of
            this Schedule "5", at least [*] shall be deemed to be[*] .

      b.    [*]

            1.    A [*] occurs when the malfunction of an item, or necessary
                  checking and/or corrective actions, cause a [*] not to be
                  available [*] , or a [*] .

            2.    [*]

            3.    To be accounted as [*] , any [*] , either verbal or written,
                  must result in [*] corrective action.

            4.    A repetitive [*] shall not be counted as [*] . [*] .

      c.    [*]

            [*] is the actual [*] obtained by the Chautauqua's [*] .

            [*] computed monthly commencing with[*] by Chautauqua, as follows

            [*]

II.   Embraer, subject to the conditions and limitations expressed in this
      Schedule "5", will [*] :

      a.    This [*] will be applicable only for Aircraft first operated by
            Chautauqua and only so long as the Aircraft are operated by
            Chautauqua.

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      b.    The [*] for the first [*] period after [*] shall be [*] The [*] for
            the second [*] period [*] shall be [*] The [*] for the third [*]
            period after commencement of commercial operations [*] shall be [*]
            The [*] for the [*] period [*] (the "Final Period") shall be [*]
            (collectively "GDR").

      c.    In the event that [*] any [*] period referred to above is lower than
            [*] , Embraer shall diligently, after notification by Buyer:

            1.    [*] mutually agreed to by the Parties;

            2.    Make recommendations concerning Chautauqua's programs, [*] ;
                  and

            3.    Take all measures, as deemed necessary and appropriate by
                  Embraer when [*] does not provide the [*] .

      d.    In the event that the [*] described in paragraph II.b. above is [*]
            than the [*] , Embraer shall [*] :

            [*]

            [*]

            In the event the [*] described in paragraph II.b. above is [*] ,
            then [*] Buyer or Chautauqua shall calculate measurements and submit
            them to Embraer within [*] after the end of each [*] period referred
            to in Article II a. of this Schedule "5". [*] shall attempt to reach
            an agreement over the data within [*] of the submission. [*]

      e.    This [*] is based upon the following assumptions [*] , and any
            change to the assumptions shall be cause for reevaluation or
            adjustments of [*] in Embraer's sole discretion.

            [*] , plus or minus [*] with a minimum average flight hours per
            flight cycle, of [*]

      f.    The following elements are not [*] :

            [*] due to reasons other than Aircraft mechanical failures,
            including without limitation:

            -     Air Traffic Control

            -     Weather

            -     Acts of God (i.e. natural disasters, floods and earthquakes,
                  lightning strikes, bird strikes etc.).

            -     Accidents

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            -     Incidents

            -     Negligence

            -     Force majeure

            -     [*]

            -     Optional equipment other than that identified on Attachment
                  "A" to the Purchase Agreement

            -     [*]

            -     [*] - Non-availability of spares or equipment, [*] as provided
                  for in paragraph [*] ;

            -     [*] ;

            -     [*] which could have been prevented if the Minimum Equipment
                  List ("MEL") issued and/or approved by the local regulatory
                  authority was followed

            -     [*] ,

            -     [*] caused by Chautauqua's negligence or misuse of parts or
                  Chautauqua's failure to take all maintenance actions on the
                  Aircraft as recommended in all applicable maintenance manuals

            -     [*] or parts that has/have been involved in an accident, or
                  when parts either defective or not complying to manufacturer's
                  design or specification have been used;

            -     [*] parts that have had their identification marks,
                  designation, seal or serial number altered or removed

            -     [*].

            -     [*] which lead to a [*] (including but not limited to worn,
                  flat and cut tires, servicing (ATA Chapter 12), hard landing,
                  dead batteries, and worn brakes).

III.  The foregoing [*] is provided subject to Chautauqua's adherence in all
      material respects to the following general conditions:

      a.    Airplane Operation

            Aircraft shall be operated in airline service in accordance with FAA
            regulations and as recommended by Embraer through the official and
            most updated Operations and Airplane Flight Manual. Chautauqua shall
            have available [*] spare aircraft for each [*] Aircraft at all
            times.

      b.    Inspection Program

            The Aircraft shall be maintained in accordance with the most current
            EMB-145 MRB document and using [*] Chautauqua's program must [*].
            Chautauqua's program should also include [*].

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      c.    Aircraft Manuals

            [*]

      d.    MEL

            [*]

      e.    Stocking Levels

            Chautauqua shall stock and maintain [*] reasonable recommended [*],
            throughout [*]. There shall be a [*] at each line maintenance base
            along with [*] Chautauqua shall annually provide an [*] to [*] which
            shows [*].

      f.    Parts Repair

            [*]

      g.    Staff Levels

            Chautauqua shall have [*] to properly [*] during [*] . This shall
            include, but not be limited to, [*] .

      h.    Training

            Chautauqua shall put and keep in place a training program approved
            by the FAA, [*] :

            [*]

      i.    [*] Cleaning

            Chautauqua shall keep the [*] reasonably clean, [*] at all times.
            This includes without limitation, [*] -

      j.    Service Bulletins

            When Embraer recommends that Chautauqua implement a service bulletin
            which improves [*] , Embraer Customer Support Department shall
            contact Chautauqua's Vice President of Maintenance, in writing, with
            recommendations that the service bulletin be complied with.
            Chautauqua will schedule the Aircraft for incorporation of such
            service bulletin [*]

      k.    Ground Support Equipment

            Embraer shall provide Chautauqua two lists of tooling and ground
            support equipment required to maintain the Aircraft which lists
            shall be subject to Chautauqua's reasonable approval. [*] Chautauqua
            will be required to maintain these levels of required tooling and
            ground support equipment in good working order at all times.

      l.    [*] Reporting

                                                                     Page 4 of 6

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            Chautauqua shall provide [*] to Embraer a [*] . This report shall
            include [*] and part number and serial number of the components
            removed and installed shall be maintained by [*]

      m.    Rejection

            Chautauqua shall not unreasonably reject [*] Any such rejection
            shall [*] .

      n.    Certification or Regulatory Changes

            [*].

      o.    [*] Meeting

            An [*] Meeting shall be scheduled, if necessary, and at the end of
            [*] of Chautauqua's Aircraft operation. Representatives of
            Chautauqua and Embraer shall participate in the meetings and will:

            1.    [*];

            2.    Eliminate irrelevant or non-Aircraft-intrinsic [*] from
                  computed [*]; and

            3.    Review Chautauqua's compliance with Service Bulletins as
                  required by Article III.j of this Schedule "5", [*].

            Chautauqua shall permit Embraer access to all of its data which can
            be used in understanding and analyzing the dispatch reliability
            failure.

IV.   Suspension

      [*] automatically suspended and shall not apply during the period of any
      labor disruption or dispute involving [*] which affects in whole or in
      part [*] .

V.    Chautauqua will not include in the calculation [*]

      a.    When the Aircraft has been used in an attempt to break records, [*]
            or in any other way not in conformity with [*] ; and

      b.    When the Aircraft or any of its parts has/have been altered or
            modified by Chautauqua, [*] .

VI.   [*] ARE EXCLUSIVE AND IN SUBSTITUTION FOR, AND BUYER HEREBY WAIVES,
      RELEASES AND RENOUNCES, ALL OTHER RIGHTS, CLAIMS, DAMAGES AND REMEDIES OF
      BUYER AGAINST EMBRAER OR ANY ASSIGNEE OF EMBRAER, EXPRESS OR IMPLIED,
      ARISING BY LAW OR OTHERWISE, [*] .

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VII.  The terms and conditions of this [*] do not alter, modify or impair, in
      any way, the terms and conditions of [*] to the Purchase Agreement.

VIII. The [*] is established between Embraer and Buyer and it cannot be
      transferred or assigned to others, unless by previous written consent of
      Embraer.

IX.   [*] Chautauqua shall execute a waiver consistent with Section VI of this
      Schedule "5", in a form acceptable to Embraer.

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                                  SCHEDULE "6"
                    EMB-140 AIRCRAFT UNDER [*] CONFIGURATION

                 AIRCRAFT SPECIFIC CONFIGURATION, FINISHING AND
                               REGISTRATION MARKS

                              STANDARD 140 AIRCRAFT

   THE AIRCRAFT SHALL BE MANUFACTURED ACCORDING TO THE STANDARD CONFIGURATION
    SPECIFIED IN EMBRAER'S TECHNICAL DESCRIPTION TD-140/002 DATED AS OF APRIL
    2000, TYPE CERTIFICATION FAA, AND INCLUDING THE FOLLOWING OPTIONAL ITEMS:

                               OPTIONAL EQUIPMENT:
                 2.1 OPTIONS TO STANDARD AVIONICS CONFIGURATION
                                       [*]

                       2.2 OPTIONAL SYSTEM/OTHER EQUIPMENT
                                       [*]

                             INTERIOR OPTIONAL ITEMS
                                       [*]

                                  3. FINISHING

                             a. EXTERIOR FINISHING:

       THE AIRCRAFT SHALL BE PAINTED ACCORDING TO THE AMR EAGLE COLOR AND
           PAINT SCHEME, WHICH HAS BEEN SUPPLIED TO EMBRAER BY BUYER.

                             b. INTERIOR FINISHING:

   Buyer has informed Embraer of its choice of materials and colors of all and
   any item of interior finishing such as seat covers, carpet, floor lining on
   galley areas, side walls and overhead lining, galley lining and curtain. If
          Buyer opts to use different materials and or patterns, such
                  schedule shall be agreed between the Parties.

                              4. REGISTRATION MARKS

 The Aircraft shall be delivered to Buyer with the registration marks painted on
   them, which shall be supplied to Embraer by Buyer no later than [*] before
                each relevant Aircraft Contractual Delivery Date.

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IF THERE IS ANY CONFLICT BETWEEN THE TERMS OF THIS SCHEDULE "6" AND THE TERMS
 OF THE TECHNICAL DESCRIPTION TD-140/002, DATED APRIL 2000, THE TERMS OF THIS
                           SCHEDULE "6" SHALL PREVAIL.

                                                                     Page 2 of 2<Page>

                                                                Exhibit 10.14(a)

                                  CONFIDENTIAL

                          AMENDMENT NUMBER 1 TO AMENDED
                    AND RESTATED LETTER AGREEMENT GCT-026/98
                    ----------------------------------------

This Amendment Number 1 to Amended and Restated Letter Agreement GCT-026/98,
dated as of June 7, 2002 ("Amendment No. 1") relates to the Amended and Restated
Letter Agreement GCT-026/98 (the "Letter Agreement") between Embraer - Empresa
Brasileira de Aeronautica S.A. ("Embraer") and Republic Airways Holdings, Inc.
("Buyer") dated April 19, 2002, which concerns the Amended and Restated Purchase
Agreement GCT-025/98 (the "Purchase Agreement"), as amended from time to time
(collectively referred to herein as the "Agreement"). This Amendment No. 1 is
between Embraer and Buyer, collectively referred to herein as the "Parties".

This Amendment No. 1 sets forth further agreements between Embraer and Buyer
relative to the incorporation of 22 firm aircraft and 30 option aircraft to the
Purchase Agreement with certain specifics and exclusives conditions, as provided
in Amendment No. 1 to the Purchase Agreement, dated as of the date hereof.

This Amendment No. 1 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. 1 and the Agreement, the terms of this Amendment No.
1 shall control.

WHEREAS, in connection with the Parties' agreements as described above, the
Parties have agreed to modify 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. LETTER AGREEMENT APPLIES TO DELTA AIRCRAFT: The terms of the Letter Agreement
shall apply to the Delta Aircraft except as otherwise provided in this Amendment
No. 1 to the Letter Agreement.

2. [*]

3. SPARE PARTS CREDIT: Article 2 of the Letter Agreement is hereby deleted and
replaced with the following:

      "Embraer will provide Buyer a spare parts (except engines, engine related
      parts and APU) and ground support equipment credit of [*] This spare parts
      credit shall be made available to Buyer upon [*] If for any reason the
      Purchase Agreement is partially terminated in relation to any Aircraft,
      then Buyer shall pay [*] per each applicable terminated EMB-145 Aircraft
      and/or [*] per each EMB-140 Aircraft and/or [*] per each EMB-135 Aircraft
      for which such Spare Parts Credit for any reason has already been provided
      to Buyer. Each Spare Part Credit shall only be made available to Buyer in
      the event there is [*] If any such credit is not so made available to
      Buyer because [*] , such credit shall be made

                                                                     Page 1 of 4

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Certain portions of this exhibit have been omitted pursuant to a request for
confidential treatment under Rule 406 of the Securities Act of 1933. The
omitted materials have been filed separately with the Securities and Exchange
Commission.

*Confidential

<Page>

                                  CONFIDENTIAL

      available [*]. Any portion of such credit which remains unused [*] shall
      be deemed to have been waived by Buyer, and no further compensation shall
      be due [*] for such Spare Parts Credit. Such Spare Parts Credit shall be
      applied against [*]

4. FINANCING: Article 4 of the Letter Agreement shall not apply to the Delta
Aircraft. Embraer shall provide financing assistance for the Delta Aircraft
pursuant to the Finance Term Sheet attached hereto as Schedule "7" to the Letter
Agreement.

5. AIRCRAFT ESCALATION PRICE: Article 5 of the Letter Agreement shall not apply
to the Delta Aircraft. The following escalation limits shall apply to the Delta
Aircraft:

      A.    The Delta Aircraft Basic Prices are subject to Embraer's standard
            escalation formula [*] .

      B.    The result of the Escalation Formula application to each Delta
            Aircraft delivery is [*] The Delta Aircraft Purchase Price shall be
            the result of the [*] times [*] of the Escalation Factor [*] .
            However, in the event that [*] shall be fully [*] .

      C.    The conditions described in this Article 10 shall only be applicable
            in the event the [*] In the event the [*] the Delta Aircraft
            Purchase Price will be equal to the Delta Aircraft Basic Price [*]

In the event any Delta Aircraft shall be delivered after December 2007, the
Parties agree to, in addition to the Escalation Formula, enter into good faith
negotiations for the revision of the Aircraft Basic Prices for the Delta
Aircraft not yet delivered. Should the Parties not succeed in the negotiation
for revision of the relevant Basic Prices, then Embraer may terminate the
Purchase Agreement in regard to the Delta Aircraft not yet delivered. [*]

6. ADDITIONAL AIRCRAFT [*] : Article 7 of the Letter Agreement shall be deleted
and replaced with the following text:

      "Embraer shall provide a [*] in accordance with the terms and conditions
      specified in Schedules "4" and "5", respectively. These [*] shall apply to
      [*]."

7. [*] : Article 8 of the Letter Agreement shall not apply to the Delta
Aircraft. However, Buyer may, at Buyer's option, [*] , provided that Buyer
informs Embraer by means of a written notice no later than the date which Buyer
confirms the exercise of its option to purchase [*] , according to Article 24 of
the Purchase Agreement, of its intention to exercise [*] . Upon [*] all relevant
provisions of the Purchase Agreement and Letter Agreement shall apply MUTATIS
MUTANDI.

8. [*] PAYMENTS: Article 9 of the Letter Agreement shall apply for all Aircraft,
except that Buyers obligations thereunder shall be limited as follows:

                                                                     Page 2 of 4

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                                  CONFIDENTIAL

      Notwithstanding anything to the contrary in the Purchase Agreement, Buyers
      obligations to make [*] payment and deposits shall be [*] as provided in
      this Section 8.

      [*] Buyer shall make (by wire transfer) [*] payments in an amount of [*]
      for each Aircraft with a Contractual Delivery Date on or before [*] , and
      [*] for each Aircraft with a Contractual Delivery Date between [*] After
      making such payments, Buyer shall not be obligated to make [*] until [*]

      [*] Buyer shall make all additional [*] payments and all [*] and the
      provisions of the Purchase Agreement. In order to compensate Embraer for
      the [*] on the amount of each [*] payment and deposit that has been [*]
      shall be made in accordance with the provisions of Article 9.3 of the
      Letter Agreement, except that they shall be paid [*] .

9. OTHER AGREEMENTS: Article 10 of the Letter Agreement is hereby deleted and
replaced with the following:

      "Any breach, default or failure to perform by Chautauqua or Buyer under
      any other agreement between one or both of them and Embraer shall be a
      breach of the Purchase Agreement. Any breach, default or failure to
      perform by Buyer under the Purchase Agreement shall be a breach and event
      of default by Buyer and Chautauqua under all other agreements between one
      or both of them and Embraer.

10. [*].

11. MISCELLANEOUS: All other provisions of the Agreement which have not been
specifically amended or modified by this Amendment No. 1 shall remain valid in
full force and effect without any change.

                                                                     Page 3 of 4

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*Confidential

<Page>

                                  CONFIDENTIAL

IN WITNESS WHEREOF, Embraer and Buyer, by their duly authorized officers, have
entered into and executed this Amendment No. 1 to be effective as of the date
first written above.

EMBRAER - Empresa  Brasileira  de         Republic Airways Holdings, Inc.
Aeronautica S.A.

By:                                       By:
   ---------------------------               ------------------------------
Name:                                     Name:
Title:                                    Title:

By                                        Date:
   ---------------------------
Name:                                     Place:
Title:

Date:
Place:

Witness:                                  Witness:
        ----------------------                    -------------------------
Name:                                     Name:
     -------------------------                 ----------------------------

                                                                     Page 4 of 4

<Page>

                                  CONFIDENTIAL

                                  SCHEDULE "7"
                              FINANCING TERM SHEET

Pursuant to negotiations between Embraer - Empresa Brasileira de Aeronautica
S.A. ("Embraer"), Republic Airways Holdings, Inc. ("Buyer") and Delta Air Lines,
Inc. ("Delta"), Embraer is pleased to present this Financing Term Sheet which
describes the general terms and conditions of the financing assistance to be
offered [*] . (References to Buyer in this Financing Term Sheet shall be deemed
to include Chautauqua).

Embraer will use commercially reasonable efforts to obtain [*] financing for the
Delta Aircraft based on the following basic terms and conditions:

AIRCRAFT:               The Delta Aircraft (i.e. 22 Firm Aircraft and 30 Option
                        Aircraft).

AIRCRAFT PRICE:         The Purchase Prices for the Delta Aircraft.

[*]

FINANCING TRANSACTION:  The Delta Aircraft Interim or permanent financing
                        assistance will be provided in the form of [*]
                        financing (the "[*] Financing") and will be provided by
                        Embraer [*] to the benefit of Buyer, which may require
                        the utilization of special purpose corporation(s) and/or
                        trust arrangements, and shall consist of following
                        financial main terms and conditions:

DEBT PROVIDER:          [*] ;

FINANCED AMOUNT:        Up to [*] of the Delta Aircraft Purchase Price, with
                        Buyer to pay no less than [*] itself;

DEBT TENOR:             [*]  years, payable in [*]  and a maximum average [*]

DEBT RATE:              [*] as such rate is adjusted on the [*] For reference
                        purposes only, [*] rate as at June 5, 2002 [*]

                        In the event that [*] obtain financing from [*] but in
                        an amount less than [*] of the aircraft purchase price,
                        Embraer agrees that it will provide or cause to be
                        provided from a third party [*] The interest rate for
                        such [*] shall be [*]

                        In the event that Embraer cannot obtain [*] Embraer
                        agrees to [*] Further, such [*] is expressly conditioned
                        upon Buyer's [*] provided that Buyer shall not be [*]

                        [*] are generally offering in the US market for similar
                        regional airlines at the time.

                        Embraer and Buyer agree to jointly work together [*]

                                                                     Page 1 of 3

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*Confidential

<Page>

                                  CONFIDENTIAL

                        Additionally, in the event Buyer arranges sub-debt or
                        market equity (including without limitation a single
                        investor lease) [*] Embraer may provide, [*] on terms
                        and conditions to be further discussed and agreed
                        between Buyer and Embraer. [*]

CONDITIONS PRECEDENT:   (1) Absence of any material adverse change in the
                        business, operations or financial condition of Buyer as
                        proposed by the Buyer business plan as reflected in its
                        S1 filing. The parties specifically agree that the
                        following events in and of themselves shall not
                        constitute material adverse changes in the business,
                        operations or financial condition of Buyer (provided
                        that, for the avoidance of doubt, such events may
                        contribute to a material adverse change) : [*].

                        (2) Absence of litigation by or against Buyer, Delta or
                        any Buyer affiliate, which could be reasonably be
                        expected to have a material adverse effect upon the
                        operations of Buyer; provided that if Buyer continues to
                        make reasonable efforts to resolve the litigation
                        without a material adverse effect and such litigation is
                        resolved within ninety days (in any case, no later than
                        thirty days before the relevant closing), this condition
                        shall only [*].

                        (3) For the Option Aircraft, absence of any material
                        adverse change in the financial/lease markets negatively
                        impacting availability of, access to, or costs of
                        aircraft financing; and for all Aircraft, absence of a
                        disruption in the finance markets that results In banks
                        being permitted or required to close (provided that such
                        condition shall only [*] ).

                        (4) Buyer entering into a code-share agreement with
                        Delta for 22 firm Aircraft and such agreement remaining
                        in full force and effect. With respect to the financing
                        of any Option Aircraft, Buyer shall have entered into an
                        agreement with Delta pursuant to which such Option
                        Aircraft will be operated under such code share
                        agreement or an amendment or modification thereof.

                        (5) No changes or amendments to Section 1110 of the
                        United States Bankruptcy Code as currently legislated
                        and interpreted in a manner that would materially
                        adversely affect the financing parties in a United
                        States aircraft financing, and that has had a materially
                        adverse effect on the aircraft financing market;
                        provided that if such effect [*], this condition shall
                        [*] ends.

                        (6) Buyer shall cooperate with any financing party, or
                        any other participant in the financing structure, and
                        shall provide financial and other information reasonably
                        requested by such participants.

                                                                     Page 2 of 3

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*Confidential

<Page>

                                  CONFIDENTIAL

                        (7) There shall not be a monetary default by Buyer with
                        respect to the pertinent financing parties at the time
                        of financing.

                        (8) Buyer shall waive trial by jury in respect of any
                        claim based upon or arising out of financings and
                        resulting transactions.

                        (9) All payments to be made by the Buyer in favor of the
                        financing parties shall be free and clear of any taxes,
                        levies, duties or other deductions of whatever nature
                        including standard gross up provisions.

                        (10) All legal fees and disbursements, and out-of-pocket
                        expenses of Embraer, the financing parties, or any other
                        financing party associated with this transaction,
                        including but not limited to registration fees/expenses
                        that are customary in aircraft transactions, shall be
                        for the account of Buyer and shall be paid by it on
                        closing, provided that with respect to any Aircraft for
                        which Embraer arranges or provides Interim Financing and
                        permanent financing is subsequently arranged, in the
                        event the total amount of such fees, disbursements and
                        expenses incurred in connection with such Interim
                        Financing and such permanent financing [*] , Embraer
                        shall [*] .

                                                                     Page 3 of 3

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*Confidential

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