Document:

<PAGE>

                                                                    Exhibit 10.8

                              CONTRACT CHANGE ORDER

PURCHASER:                       US Airways Group, Inc.

AGREEMENT:                       Master Purchase Agreement number MPA-515 dated
                                 May 9, 2003 between US Airways Group, Inc. and
                                 Bombardier Inc., represented by Bombardier
                                 Aerospace - Regional Aircraft.

C.C.O. NO.:                      003

DATE OF ISSUE:                   February 25, 2004

NO. OF PAGES:                    161

REASONS FOR CHANGE:              ***

DESCRIPTION OF AGREED CHANGES

For the purposes of this Contract Change Order No. 003 ("CCO No. 3"), "US
Airways" means US Airways Group, Inc. and "Bombardier" means Bombardier Inc.,
represented by Bombardier Aerospace - Regional Aircraft.

1.0   Supplements

      1.1  Supplement 1

           1.1.1  ***

           1.1.2  ***

                                       -1-

<PAGE>

      1.1.3   ***

1.2   Supplement 2

      1.2.1   Supplement 2 is hereby deleted in its entirety and replaced with a
              new Supplement 2 attached hereto as Attachment 2.

1.3   Supplement 3

      1.3.1   Supplement 3 is hereby deleted in its entirety and replaced with a
              new Supplement 3 attached hereto as Attachment 3.

             The remainder of this page is intentionally left blank.

                                       -2-

<PAGE>

2.0   Master Purchase Agreement Terms and Conditions

      2.1    In Article 1.3, the definition of Firm Aircraft is hereby deleted
             in its entirety and replaced with the following:

             ***

      2.2    Annex A - Airline Support Services

             2.2.1   ***

             2.2.2   ***

3.0   Letter Agreements

      3.1    ***

      3.2    ***

      3.3    ***

             3.3.1   ***

             3.3.2   ***

                                       -3-

<PAGE>

        ALL OTHER TERMS AND CONDITIONS OF THE AGREEMENT REMAIN UNCHANGED

FOR AND ON BEHALF OF                           FOR AND ON BEHALF OF

BOMBARDIER INC.                                US AIRWAYS GROUP, INC.
Bombardier Aerospace - Regional Aircraft

Signed: /s/ Thomas E. Bell                     Signed:  /s/ Eilif Serck-Hanssen
        -----------------------------                   ------------------------

Name:   Thomas E. Bell                         Name:    Eilif Serck-Hanssen

Title:  Manager, Contracts                     Title:   V.P. Finance & Treasurer

Date:   February 26, 2004                      Date:    February 26, 2004
        -----------------------------                   ------------------------

                                       -4-

<PAGE>

                       Schedule 3 to Supplement MPA-515-1

                        BUYER SELECTED OPTIONAL FEATURES
                             PRICES AND DESCRIPTIONS

                              50 Seat CRJ Aircraft

    CR Ref. #                  Option Description              Price in
    ---------                  ------------------              --------
                                                                 ***
                                                                 ---

       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***

                                            ------------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______

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

                                       -1-

<PAGE>

       ***                            ***                        ***

       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
       ***                            ***                        ***
                                                Subtotal       ***

                                                   Less:       ***

            Grand Total Buyer Selected Optional Features       ***

One Time Charges

       ***                            ***                      ***

***

                                            ------------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______

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

                                       -2-

<PAGE>

In the event of termination of the Agreement and/or this Supplement with respect
to any 50 Seat CRJ Aircraft, this Schedule shall automatically become null and
void with respect to each Aircraft so terminated.

The provisions of this Schedule are personal to Buyer and shall not be assigned
or otherwise disposed of by Buyer without the prior written consent of
Bombardier, except as provided in Article 18 of the Agreement.

This Schedule constitutes an integral part of the Supplement and is subject to
the terms and conditions contained herein.

Should there be any inconsistency between this Schedule and the Agreement and/or
the Supplement with respect to the subject matter covered by the terms hereof,
then this Schedule shall prevail.

In the event of the termination of the Agreement and/or this Supplement, this
Schedule shall automatically become null and void.

                                            ------------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______

                                            ------------------------------------
                                       -3-

<PAGE>

                                SUPPLEMENT NO. 2

                                       TO

                      MASTER PURCHASE AGREEMENT NO. PA-515

                                     BETWEEN

                                 BOMBARDIER INC.

                                       AND

                             US AIRWAYS GROUP, INC.

This Supplement, including all Schedules and Annexes, when accepted and agreed
to by US Airways Group, Inc. ("Buyer") will become part of Master Purchase
Agreement No. PA-515 entered into between BOMBARDIER INC., a Canadian
corporation represented by Bombardier Aerospace, Regional Aircraft having
offices at 123 Garratt Boulevard, Downsview, Ontario, Canada ("Bombardier") and
Buyer (the "Agreement") and will evidence our further agreement with respect to
the matters set forth below.

The provisions of the Agreement shall apply to the Bombardier products purchased
and sold in accordance with this Supplement. All capitalized terms herein,
unless defined herein, shall have the same respective meanings as in the
Agreement. This Supplement is subject to the provisions of the Agreement, all of
which are incorporated herein, provided that in the event of any inconsistency
between the provision of the Agreement and the provisions of this Supplement,
the latter shall take precedence.

Article 1 below supplements Article 2 of the Agreement.

ARTICLE 1.0       SUBJECT MATTER OF SALE

1.1    ***

Article 2 below supplements Article 4 of the Agreement.

ARTICLE 2.0       PRICE

       2.1   (a)  ***

             (b)  ***

                                           -------------------------------------
                                           Initials

                                           US Airways ______ Bombardier ______

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

                                       -1-

<PAGE>

                  (c)     ***

                  (d)     ***

                                           -------------------------------------
                                           Initials

                                           US Airways ______ Bombardier ______

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

                                       -2-

<PAGE>

Article 3.0 below supplements Article 8.0 of the Agreement.

ARTICLE 3.0         DELIVERY PROGRAM

     3.1   ***

ARTICLE 4.0         CRJ OPTION AIRCRAFT

     4.1   ***

     4.2   ***

     4.3   ***

     4.4   ***

                                           -------------------------------------
                                           Initials

                                           US Airways ______ Bombardier ______

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

                                       -3-

<PAGE>

ARTICLE 5.0       ***

5.1   ***

5.2   ***

ARTICLE 6.0       SUPPORT AND SERVICES

6.1   ***

6.2   In addition to Article 6.1 above, for all of the 70 Seat CRJ Aircraft,
      Buyer will automatically be entitled to:

      (i)    ***

      (ii)   ***

                                           -------------------------------------
                                           Initials

                                           US Airways ______ Bombardier ______

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

                                       -4-

<PAGE>

IN WITNESS WHEREOF this Supplement was signed on the 26 day of February, 2004.

For and on behalf of                              For and on behalf of

US AIRWAYS GROUP, INC.                            BOMBARDIER INC.
                                                  Bombardier Aerospace -
                                                  Regional Aircraft

/s/ Eilif Serck-Hanssen                           /s/ Thomas E. Bell
_________________________________                 ______________________________
Name:  Eilif Serck-Hanssen                        Name:  Thomas E. Bell
Title: V.P. Finance & Treasurer                   Title: Manager, Contracts

                                           -------------------------------------
                                           Initials

                                           US Airways ______ Bombardier ______

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

                                       -5-

<PAGE>

                       Schedule 1 to Supplement MPA-515-2

                         *** CRJ AIRCRAFT SPECIFICATION

                                       ***

                                           -------------------------------------
                                           Initials

                                           US Airways ______ Bombardier ______

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

                                       -6-

<PAGE>

                       Schedule 2 to Supplement MPA-515-2

                       AIRCRAFT SCHEDULED DELIVERY MONTHS

                         ------------------------------------
                              CRJ700            CRJ700
                         ------------------------------------
                         ***               ***
-------------------------------------------------------------
     ***       ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
=============================================================
  Sub Total          ***          ***              ***
=============================================================
     ***       ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
=============================================================
  Sub Total
=============================================================
     ***       ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
-------------------------------------------------------------
               ***       ***               ***
=============================================================
Sub Total            ***          ***              ***
=============================================================
GRAND TOTAL                     ***               ***
-------------------------------------------------------------

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------
                                      -7-

<PAGE>

In the event of termination of the Agreement and/or this Supplement with respect
to, this Schedule shall automatically become null and void with respect to each
Aircraft so terminated.

The provisions of this Schedule are personal to Buyer and shall not, except as
provided in Article 18 of the Agreement, be assigned or otherwise disposed of by
Buyer without the prior written consent of Bombardier.

This Schedule constitutes an integral part of the Supplement and is subject to
the terms and conditions contained herein.

Should there be any inconsistency between this Schedule and the Agreement and/or
the Supplement with respect to the subject matter covered by the terms hereof,
then this Schedule shall prevail.

In the event of the termination of the Agreement and/or this Supplement, this
Schedule shall automatically become null and void.

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -8-

<PAGE>

                       Schedule 3 to Supplement MPA-515-2

                        BUYER SELECTED OPTIONAL FEATURES
                             PRICES AND DESCRIPTIONS

                              *** Seat CRJ Aircraft
<TABLE>
<CAPTION>
     CR Ref. #                    Option Description                   ***
     ---------                    ------------------                   ---
<S>                               <C>                                <C>
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
</TABLE>

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -9-

<PAGE>
<TABLE>
<S>                                      <C>                           <C>
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
        ***                              ***                           ***
                                                        Subtotal       ***

                                                           Less:       ***

                    Grand Total Buyer Selected Optional Features       ***

One Time Charge

        ***                              ***                           ***
</TABLE>

                       Schedule 3A to Supplement MPA-515-2

                        BUYER SELECTED OPTIONAL FEATURES
                             PRICES AND DESCRIPTIONS

                              *** Seat CRJ Aircraft
<TABLE>
<CAPTION>
      CR Ref. #                   Option Description                   ***
      ---------                   ------------------                   ---
<S>                               <C>                                  <C>
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
</TABLE>

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -10-

<PAGE>
<TABLE>
<S>                                      <C>                           <C>
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
         ***                             ***                           ***
                                                        Subtotal       ***

                                                                       ***

                    Grand Total Buyer Selected Optional Features       ***
</TABLE>

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -11-

<PAGE>

         ***                             ***                           ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -12-

<PAGE>

In the event of termination of the Agreement and/or this Supplement with respect
to CRJ Aircraft, this Schedule shall become automatically null and void with
respect to each Aircraft so terminated.

The provisions of these Schedules are personal to Buyer and shall not, except as
provided in Article 18 of the Agreement, be assigned or otherwise disposed of by
Buyer without the prior written consent of Bombardier.

This Schedule constitutes an integral part of the Supplement and is subject to
the terms and conditions contained herein.

Should there be any inconsistency between this Schedule and the Agreement and/or
the Supplement with respect to the subject matter covered by the terms hereof,
then this Schedule shall prevail.

In the event of the termination of the Agreement and/or this Supplement, this
Schedule shall automatically become null and void.

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -13-

<PAGE>

                       Schedule 4 to Supplement MPA-515-2

                                Buyer Information

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------------
                  BUYER INFORMATION                                           DUE DATES
-------------------------------------------------------------------------------------------------------------
<S>                                                     <C>
*Customized/Multiple Paint Schemes                      *** months prior to delivery of each Aircraft.

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

*Interior Decor - Standard Materials and Combinations   *** months prior to delivery of the First applicable
                                                        Aircraft.

-------------------------------------------------------------------------------------------------------------
*Interior Decor - Standard Materials,                   *** months prior to delivery of the First applicable
Custom Combinations                                     Aircraft.

-------------------------------------------------------------------------------------------------------------
*Interior Decor -Custom Materials, Custom               *** months prior to delivery of the First applicable
Combinations                                            Aircraft.

-------------------------------------------------------------------------------------------------------------
*Placards, Markings, Labels and Translations            *** months prior to delivery of the First Aircraft.

-------------------------------------------------------------------------------------------------------------
*Emergency Equipment - Standard Selection/Locations     *** months prior to delivery of the First applicable
                                                        Aircraft.

-------------------------------------------------------------------------------------------------------------
*Emergency Equipment - Custom Selection/Locations       *** months prior to delivery of the First applicable
                                                        Aircraft.

-------------------------------------------------------------------------------------------------------------
**Aircraft Registration Number(s)                       *** months prior to delivery of each Aircraft.

-------------------------------------------------------------------------------------------------------------
**Mode S Transponder Octal Code(s), as applicable       *** months prior to delivery of each Aircraft.

-------------------------------------------------------------------------------------------------------------
**SELCAL Code(s), as applicable                         *** months prior to delivery of each Aircraft.

-------------------------------------------------------------------------------------------------------------
**GPWS Audio Call-out (Mode 6) Codes, as applicable     *** months prior to delivery of each Aircraft.

-------------------------------------------------------------------------------------------------------------
</TABLE>

***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -14-

<PAGE>

                             FORM "A" TO SCHEDULE 4

                         BUYER'S CUSTOMIZED PAINT SCHEME

US Airways Group, Inc. hereby approves the attached Customized Paint Scheme.

Dated this ___ day of ______________ 200_.

By:  _________________________________
Name:
Title:

cc:  Contracts

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -15-

<PAGE>

                             FORM "B" TO SCHEDULE 4

               BUYER'S INTERIOR DECOR AND EMERGENCY EQUIPMENT LIST

US Airways Group, Inc. hereby approves the attached Interior Decor as submitted
by Buyer on ________________, 200_ and confirmed by Bombardier Aerospace on
___________________, 200_ and hereby approves the attached Emergency Equipment
List and Locations.

Dated this ___ day of ______________ 200_.

By:  _________________________________
Name:
Title:

cc:  Contracts

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -16-

<PAGE>

                             FORM "C" TO SCHEDULE 4

                       BUYER'S PLACARDS, LABELS & MARKINGS

US Airways Group, Inc. hereby approves the attached Placards, Markings, and
Labels as submitted by Buyer on ________________________, 200_ and confirmed by
Bombardier Aerospace on ___________________, 200_.

Dated this ___ day of ______________ 200_.

By:  _________________________________
Name:
Title:

cc:  Contracts

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -17-

<PAGE>

                       Schedule 5 to Supplement MPA-515-2

                            Intentionally Left Blank

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -18-

<PAGE>

                       Schedule 6 to Supplement MPA-515-2

                       *** CRJ AIRCRAFT CREDIT MEMORANDUM

1.0      ***

         (a)      ***

         (b)      ***

2.0      In the event of termination of the Agreement and/or this Supplement
         with respect to any *** CRJ Aircraft, this Schedule shall automatically
         become null and void with respect to each Aircraft so terminated.

3.0      The provisions of this Schedule are personal to Buyer and shall not,
         except as provided in Article 18 of the Agreement, be assigned or
         otherwise disposed of by Buyer without the prior written consent of
         Bombardier.

4.0      This Schedule constitutes an integral part of the Supplement and is
         subject to the terms and conditions contained herein.

5.0      Should there be any inconsistency between this Schedule and the
         Agreement and/or the Supplement with respect to the subject matter
         covered by the terms hereof, then this Schedule shall prevail.

6.0      In the event of the termination of the Agreement and/or this
         Supplement, this Schedule shall automatically become null and void.

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -19-

<PAGE>

                       Schedule 7 to Supplement MPA-515-2

                     *** CRJ Aircraft Performance Guarantee

1.0      AIRCRAFT CONFIGURATION

         The guarantees listed below are for a *** CRJ Aircraft based on the
         CRJ700 ER Aircraft configuration as defined in Bombardier Aerospace
         Type ***, with the Buyer Selected Optional Features listed in Schedule
         3 or Schedule 3A as applicable, and equipped with GE CF34-8C1 engines
         as defined in GE document CF34-8C1 Installation Manual reference GEK
         105093. The weight data corresponds to the *** design weight option.
         Appropriate adjustments shall be made for any changes in configuration
         *** approved by the Buyer and Bombardier or otherwise allowed by the
         Purchase Agreement and which cause changes to the performance of the
         Aircraft.

2.0      AIRPORT CONDITIONS

         All maximum take-off weight calculations are based on the conditions
         described below:

         ***

         Airport           :***
         Runway            :***
         Slope             :***
         TORA              :***
         Elev.             :***
         Temper.           :***
         Obst.             :***     #       distance (ft)      height (ft)
                                    ***     ***                ***

         Airport           :***
         Runway            :***
         Slope             :***
         TORA              :***
         Elev.             :***
         Temper.           :***
         Obst.             :***     #       distance (ft)      height (ft)
                                    ***     ***                ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -20-

<PAGE>

         Airport           :***
         Runway            :***
         Slope             :***
         TORA              :***
         Elev.             :***
         Temper.           :***
         Obst.             :***     #       distance (ft)      height (ft)
                                    ***     ***                ***

         Airport           :***
         Runway            :***
         Slope             :***
         TORA              :***
         Elev.             :***
         Temper.           :***
         Obst.             :***     #       distance (ft)      height (ft)
                                    ***     ***                ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -21-

<PAGE>
         Airport           :***
         Runway            :***
         Slope             :***
         TORA              :***
         Elev.             :***
         Temper.           :***
         Obst.             :***     #       distance (ft)      height (ft)
                                    ***     ***                ***

         Airport           :***
         Runway            :***
         Slope             :***
         TORA              :***
         Elev.             :***
         Temper.           :***
         Obst.             :***

3.0      PERFORMANCE GUARANTEES

3.1      ***

3.1.1    ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -22-

<PAGE>

         ------------------------------------------------------------------
          Airport          Flap Configuration             Maximum
                                                      Permissible TOW
         ------------------------------------------------------------------
            ***                   ***                       ***
         ------------------------------------------------------------------
            ***                   ***                       ***
         ------------------------------------------------------------------
            ***                   ***                       ***
         ------------------------------------------------------------------
            ***                   ***                       ***
         ------------------------------------------------------------------
            ***                   ***                       ***
         ------------------------------------------------------------------
            ***                   ***                       ***
         ------------------------------------------------------------------

3.2      ***

3.2.1    ***

3.2.2    ***

            Conditions:

         Runway:                                                          ***
         Airport elevation:                                               ***
         Ambient temperature                                              ***

         Runway available - landing (G/S):                                ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -23-

<PAGE>

3.2.3    ***

              Conditions:

         Runway:                                                          ***
         Airport elevation:                                               ***
         Ambient temperature                                              ***

         Runway available - landing (G/S):                                ***

3.3      ***

3.4      ***

3.5      ***

3.6      ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -24-

<PAGE>

3.7      ***

3.8      ***

3.9      ***

3.9.1    ***

                                     Table 1

         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------
              ***          ***          ***         ***        ***
         ----------------------------------------------------------------

3.9.2    ***

3.9.3    ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -25-

<PAGE>

3.9.4    ***

                 -***
                 -***
                 -***
                 -***
                 -***
                 1)***
                 i)***
                 ii)***
                 iii)***
                 iv)***
                 v)***
              2)***
                 -***

3.10     ***

----------------------------------------------------------------------------
                    ***                              ***
----------------------------------------------------------------------------
                    ***                              ***
----------------------------------------------------------------------------
                    ***                              ***
----------------------------------------------------------------------------
                    ***                              ***
----------------------------------------------------------------------------
                    ***                              ***
----------------------------------------------------------------------------
                    ***                              ***
----------------------------------------------------------------------------

4.0      WEIGHT GUARANTEES

4.1      ***

4.2      ***

                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -26-

<PAGE>

                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***
                       ***                                  ***

4.3      ***

4.4      ***

4.5      ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -27-

<PAGE>

5.0        ***

5.1     All guaranteed performance data are based on *** unless noted otherwise.
        Altitudes are pressure altitudes.

5.2     *** take-off and landing performance are based on the requirements of
        ***

5.3     ***

5.4     ***

5.5     ***

5.6     ***

5.7     Normal power extraction assumes a load of *** with both engines
        operative and a load of *** with one engine inoperative.

5.8     Fuel density is assumed to be 6.7 pounds / US gallon. All performance
        guarantees are based on the use of a fuel with *** and on an Aircraft
        centre of gravity location of *** of the mean aerodynamic chord.

5.9     With the exception of the performance guarantees of Article 3.10, ***

5.10    ***

5.11    The Aircraft Fleet includes all delivered Aircraft after a minimum of
        five (5) Aircraft have been delivered.

5.12    Buyer shall operate and maintain the Aircraft and the engines in
        accordance with Bombardier's and engine manufacturer's procedures,
        recommendations and instructions contained in the applicable manuals,
        data and documents provided for the Aircraft. Should Buyer's Aircraft
        not be so maintained, the guarantee values in Article 3.10 will be
        adjusted to reflect the resulting adverse effect on the Aircraft
        performance.

5.13    Buyer shall make reasonable efforts to inform Bombardier of any
        modifications made on the airframe or the engines that may affect the
        aerodynamic cleanliness and/or the performance level of the Aircraft and
        Bombardier ***

5.14    The guarantees of paragraph do not cover *** due to airframe or engine
        damage to the extent resulting from (1) Buyer's misuse or negligence,
        (2) Buyer's improper installation, maintenance or operation, (3) foreign
        object damage ("FOD"), or (4) Buyer's employment of engines in
        power-back Aircraft operation. If an Aircraft or

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -28-

<PAGE>

        Aircraft Fleet is affected by the conditions resulting above, ***

5.15    Intentionally left blank.

5.16    In the event of non compliance with the guarantee set forth in paragraph
        3.10, should it become apparent the Buyer has consistently replaced
        engines with fewer hours after "heavy overhaul maintenance" on a new
        Aircraft with engines with greater hours after "heavy overhaul
        maintenance" from an old aircraft and such replacement practices may
        have had an overall negative impact on the performance of the new
        Aircraft, ***

5.17    The guarantee set forth in paragraph 3.10 above is based on the delivery
        schedule presented below and more fully described in Schedule 2 to this
        Supplement.

   -----------------------------------------------------------------------------
               Year                           Number of aircraft delivered for
                                                       CRJ700 fleet
   -----------------------------------------------------------------------------
               ***                                        ***
   -----------------------------------------------------------------------------
               ***                                        ***
   -----------------------------------------------------------------------------
               ***                                        ***
   -----------------------------------------------------------------------------
               ***                                        ***
   -----------------------------------------------------------------------------

        If the actual delivery schedule is different from the schedule presented
        above, Bombardier will review the impact on the ***

6.0     GUARANTEE COMPLIANCE

6.1     Compliance with *** shall be demonstrated by reference to the approved
        Aircraft Flight Manual adjusted to reflect any differences due to change
        in certification requirements or interpretation thereof.

6.2     Compliance with the *** in Article 3.3 *** in Article 3.4, *** in
        Article 3.7, *** in Article 3.8 and *** in Article 3.9 shall be
        established by calculations based on flight test data obtained for an
        aircraft configuration similar to that defined by this specification and
        shall be demonstrated by reference to the Flight Planning and Cruise
        Control Manual (FPCCM).

6.3     Compliance with the ***.

6.4     Compliance with the *** guarantee of Article 3.10 shall be verified,
        with the method described in Article 6.4.1, 6.4.2, 6.4.3 and 6.4.4
        below.

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -29-

<PAGE>

6.4.1   The Buyer will have the responsibility to ***

6.4.2   ***

6.4.3   ***

6.4.4   Buyer will have the responsibility to inform Bombardier *** shall
        summarize the results from the ***. In the case that the Aircraft Fleet
        ***.

6.5     Data derived from test shall be adjusted as required by conventional
        methods of correction, interpolation or extrapolation in accordance with
        established aeronautical practices to show compliance with the
        performance guarantees.

7.0     ***

7.1     All Guarantees

        In the event of a shortfall in the guarantees contained in this ***
        guarantee, ***.

7.2     *** Guarantees

        In the event of non-compliance with the individual Aircraft ***, set
        forth in Section 3.8 (the "Delivery Guarantee"), the extent of the ***
        from the guarantee value shall be noted at delivery, (the "Deficiency").
        ***

7.3     ***

                              --------------------------------------------------
                              ***                                   ***
                              --------------------------------------------------
                              ***                                   ***
                              --------------------------------------------------
                              ***                                   ***
                              --------------------------------------------------
                              ***                                   ***
                              --------------------------------------------------

7.4     ***

        7.4.1   ***

7.5     ***

        7.5.1   ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -30-

<PAGE>

8.0     In the event of termination of the Agreement and/or this Supplement with
        respect to any *** CRJ Aircraft, this Schedule shall automatically
        become null and void with respect to each Aircraft so terminated.

9.0     The provisions of this Schedule are personal to Buyer and shall not,
        except as provided in Article 18 of the Agreement, be assigned or
        otherwise disposed of by Buyer without the prior written consent of
        Bombardier.

10.0    This Schedule constitutes an integral part of the Supplement and is
        subject to the terms and conditions contained herein.

11.0    Should there be any inconsistency between this Schedule and the
        Agreement and/or the Supplement with respect to the subject matter
        covered by the terms hereof, then this Schedule shall prevail.

12.0    In the event of the termination of the Agreement and/or this Supplement,
        this Schedule shall automatically become null and void.

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -31-

<PAGE>

APPENDIX A - *** PROGRAM

The following performance monitoring program will be used for ***.

A.1 Initial Monitoring Period

***

The Buyer will exert its diligent efforts to ensure that the above data is
obtained during periods of level flight when cruise conditions are steady. In
addition, when such data is being recorded ***.

***

A.2 ***

***, Buyer will continue to monitor the performance level of each Aircraft using
the same procedure as described in paragraph A.1 above.

A.3 ***

A.4 ***

A.5 ***
                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -32-

<PAGE>

                       Schedule 8 to Supplement MPA-515-2

                                       ***

1.0   ***

2.0   ***

3.0   ***

4.0   ***

5.0   ***

6.0   ***

7.0   ***

      7.1  ***

      7.2  ***

           a)  ***

           b)  ***

           c)  ***

           d)  ***

           e)  ***

           f)  ***

           g)  ***

           h)  ***

           i)  ***

           j)  ***

           k)  ***

           l)  ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -33-

<PAGE>

      7.3  ***

      7.4  ***

8.0   ***

      8.1  ***

           a)   ***

           b)   ***

           c)   ***

      8.2  ***

9.0   ***

10.0  ***

      10.1 ***

      10.2 ***

11.0  ***

      11.1 ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -34-

<PAGE>

12.0  ***

      12.1 ***

13.0  ***

14.0  ***

15.0  ***

16.0  ***

17.0  ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -35-

<PAGE>

                       Schedule 9 to Supplement MPA-515-2

                                       ***

1.0      ***

2.0      ***

3.0      ***

4.0      ***

5.0      ***

6.0      ***

7.0      ***
         7.1      ***
         7.2      ***

                  a)      ***

                  b)      ***

                  c)      ***

                  d)      ***

                  e)      ***

                  f)      ***

                  g)      ***

                  h)      ***

                  i)      ***

                  j)      ***

                  k)      ***

                  l)      ***

         7.3 ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -36-

<PAGE>

         7.4      ***

8.0      ***

         8.1 ***

                  a)      ***

                  b)      ***

                  c)      ***

         8.2 ***

9.0      ***

10.0     ***
         10.1     ***

         10.2     ***

11.0     ***

12.0     ***

13.0     ***

14.0     ***

15.0     ***

16.0     ***

17.0     ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -37-

<PAGE>

                       Schedule 10 to Supplement MPA-515-2

                                       ***

1.0      ***

         1.1      ***

         1.2      ***

         1.3      ***

2.0      ***

         2.1      ***

                  2.1.1   ***

                  2.1.2   ***

                          a)    ***

                          b)    ***

                          c)    ***
                          d)    ***
                          e)    ***
                          f)    ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -38-

<PAGE>

3.0      ***

         3.1      ***

         3.2      ***

         3.3      ***

4.0      ***

         4.1      ***

         4.2      ***

         4.3      ***

5.0      ***

         5.1      ***

         5.2      ***

         5.3      ***

         5.4      ***

6.0      Audit

         ***

7.0      ***

         7.1 ***

         7.2 ***

8.0      ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -39-

<PAGE>

9.0      ***

10.0     ***

11.0     ***

12.0     ***

13.0     ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -40-

<PAGE>

                APPENDIX A of Schedule 10 to Supplement MPA-515-2

                                       ***
***

***

1.       ***
2.       ***
3.       ***
4.       ***

5.       ***
6.       ***
7.       ***
8.       ***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -41-

<PAGE>

                APPENDIX B of Schedule 10 to Supplement MPA-515-2

                                       ***

***

                                               ---------------------------------
                                               Initials

                                               US Airways _____ Bombardier _____
                                               ---------------------------------

                                      -42-

<PAGE>

                       Schedule 11 to Supplement MPA-515-2

                            Intentionally Left Blank

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -43-

<PAGE>

                       Schedule 12 to Supplement MPA515-2

                                       ***

1.0  ***

     1.1 ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -44-

<PAGE>

                                                  ***

--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

--------------------------------------------------------------------------------
          ***                                                        ***

--------------------------------------------------------------------------------
          ***                                                        ***

--------------------------------------------------------------------------------
          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -45-

<PAGE>

          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
                                                                     ***

          ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -46-

<PAGE>

                                                                     ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

          ***                                                        ***
          ***                                                        ***

          ***                                                        ***
          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -47-

<PAGE>

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

          ***                                                        ***

          ***                                                        ***

          ***                                                        ***
          ***                                                        ***
          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***

          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***

          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -48-

<PAGE>

--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
          ***                                                        ***
--------------------------------------------------------------------------------
          ***                                                        ***
--------------------------------------------------------------------------------

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -49-

<PAGE>

2.0   ***

3.0   ***

4.0   ***

5.0   ***

6.0   ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -50-

<PAGE>

                       Schedule 13 to Supplement MPA-515-2

                                       ***

1.0  ***

2.0  In the event of termination of the Agreement and/or this Supplement with
     respect to any *** CRJ Aircraft, this Schedule shall automatically become
     null and void with respect to each Aircraft so terminated.

3.0  The provisions of this Schedule are personal to Buyer and shall not, except
     as provided in Article 18 of the Agreement, be assigned or otherwise
     disposed of by Buyer without the prior written consent of Bombardier.

4.0  This Schedule constitutes an integral part of the Supplement and is subject
     to the terms and conditions contained herein.

5.0  Should there be any inconsistency between this Schedule and the Agreement
     and/or the Supplement with respect to the subject matter covered by the
     terms hereof, then this Schedule shall prevail.

6.0  In the event of the termination of the Agreement and/or this Supplement,
     this Schedule shall automatically become null and void.

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -51-

<PAGE>

                       Annex A to Schedule 13 to MPA-515-2

                              *** CRJ AIRCRAFT ***

1.     ***.

2.     ***.

3.     ***.

4.     ***.

5.     ***.

6.     ***.

7.     ***.

8.     ***.

9.     ***.
       1. ***
       2. ***

10.    ***.

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -52-

<PAGE>

                       Schedule 14 to Supplement MPA-515-2

                                       ***

1.0    ***

2.0    ***

2.1    ***

                                           -----------------------
                                                    ***
                  ------------------------------------------------
                            ***                     ***
                  ------------------------------------------------
                            ***                     ***
                  ------------------------------------------------
                            ***                     ***
                  ------------------------------------------------
                            ***                     ***
                  ------------------------------------------------

2.2      ***

         .

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -53-

<PAGE>

3.0    ***

3.1    ***

3.2    ***

                                        ***            ***
                                        ---            ---
                                        ***            ***
                                        ***            ***
                                        ***            ***

3.3      ***

4.0      ***

5.0      ***

6.0      ***

7.0      ***

8.0      ***

9.0      ***

10.0     ***

11.0     ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -54-

<PAGE>

                       Schedule 15 to Supplement MPA-515-2

                            Intentionally Left Blank

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -55-

<PAGE>

                                SUPPLEMENT NO. 3

                                       TO

                      MASTER PURCHASE AGREEMENT NO. PA-515

                                     BETWEEN

                                 BOMBARDIER INC.

                                       AND

                             US AIRWAYS GROUP, INC.

This Supplement, including all Schedules and Annexes, when accepted and agreed
to by US Airways Group, Inc. ("Buyer") will become part of Master Purchase
Agreement No. PA-515 entered into between BOMBARDIER INC., a Canadian
corporation represented by Bombardier Aerospace, Regional Aircraft having
offices at 123 Garratt Boulevard, Downsview, Ontario, Canada ("Bombardier") and
Buyer (the "Agreement") and will evidence our further agreement with respect to
the matters set forth below.

The provisions of the Agreement shall apply to the Bombardier products purchased
and sold in accordance with this Supplement. All capitalized terms herein,
unless defined herein, shall have the same respective meanings as in the
Agreement. This Supplement is subject to the provisions of the Agreement, all of
which are incorporated herein, provided that in the event of any inconsistency
between the provision of the Agreement and the provisions of this Supplement,
the latter shall take precedence.

Article 1 below supplements Article 2 of the Agreement.

ARTICLE 1                  SUBJECT MATTER OF SALE

1.1  Subject to the provisions of the Agreement and this Supplement, Bombardier
     offers to sell and Buyer may purchase, *** model CL-600-2D15 Bombardier
     CRJ700 Series 705 aircraft ("75 Seat CRJ Aircraft" or "Aircraft")
     manufactured pursuant to Type Specification number *** attached hereto as
     Schedule 1 as same may be modified from time to time in accordance with the
     Agreement and this Supplement (the "Specification"), as supplemented to
     reflect the incorporation of the Buyer selected optional features ("Buyer
     Selected Optional Features") set forth in Schedule 3 hereto.

Article 2 below supplements Article 4 of the Agreement.

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -1-

<PAGE>

ARTICLE 2.0    PRICE

2.1  (a)   ***

     (b)   ***

Article 3.0 below supplements Article 6.0 of the Agreement.

ARTICLE 3.0    DELIVERY PROGRAM

3.1   ***

Article 4.0 below supplements Article 13.0 of the Agreement.

ARTICLE 4.0    NON-EXCUSABLE DELAY

4.1   Intentionally left blank.

ARTICLE 5.0    ***

5.1   ***

ARTICLE 6.0    ***

6.1   ***

   IN WITNESS WHEREOF this Supplement was signed on the 26 day of February 2004.

For and on behalf of                                       For and on behalf of

US AIRWAYS GROUP, INC.                                     BOMBARDIER INC.

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                       -2-

<PAGE>

                                                       Bombardier Aerospace -
                                                       Regional Aircraft

/s/ Eilif Serck-Hanssen                                /s/ Thomas E. Bell
___________________________                            _________________________
Name:  Eilif Serck-Hanssen                             Name:  Thomas E. Bell
Title: V.P. Finance & Treasurer                        Title: Manager, Contracts

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -3-

<PAGE>

                       Schedule 1 to Supplement MPA-515-3

                       75 Seat CRJ Aircraft Specification

                                       ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -4-

<PAGE>

                       Schedule 2 to Supplement MPA-515-3

                 75 SEAT CRJ AIRCRAFT SCHEDULED DELIVERY MONTHS

                            INTENTIONALLY LEFT BLANK

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -5-

<PAGE>

                       Schedule 3 to Supplement MPA-515-3

                        BUYER SELECTED OPTIONAL FEATURES
                             PRICES AND DESCRIPTIONS

                              75 Seat CRJ Aircraft

      ***                        ***                            ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -6-

<PAGE>

***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
***          ***                                                      ***
                                                   Subtotal           ***

                                                       ***            ***

                     Grand Total Buyer Selected Optional Features     ***
***
***          ***                                                      ***

***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -7-

<PAGE>

In the event of termination of the Agreement and/or this Supplement with respect
to any 80 Seat CRJ Aircraft, this Schedule shall automatically become null and
void with respect to each Aircraft so terminated.

The provisions of this Schedule are personal to Buyer and shall not, except as
provided in Article 18 of the Agreement, be assigned or otherwise disposed of by
Buyer without the prior written consent of Bombardier.

This Schedule constitutes an integral part of the Supplement and is subject to
the terms and conditions contained herein.

Should there be any inconsistency between this Schedule and the Agreement and/or
the Supplement with respect to the subject matter covered by the terms hereof,
then this Schedule shall prevail.

In the event of the termination of the Agreement and or the Supplement, this
Schedule shall automatically become null and void.

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -8-

<PAGE>

                       Schedule 4 to Supplement MPA-515-3

                                Buyer Information

--------------------------------------------------------------------------------
      BUYER INFORMATION                                   DUE DATES
--------------------------------------------------------------------------------
Customized/Multiple Paint Schemes             *** months prior to delivery of
                                              each Aircraft.
--------------------------------------------------------------------------------
Interior Decor - Standard Materials and       *** months prior to delivery of
Combinations                                  the First Aircraft.
--------------------------------------------------------------------------------
Interior Decor - Standard Materials, Custom   *** months prior to delivery of
Combinations                                  the First applicable Aircraft.
--------------------------------------------------------------------------------
Interior Decor -Custom Materials,             *** months prior to delivery of
Custom Combinations                           the First applicable Aircraft.
--------------------------------------------------------------------------------
Placards, Markings, Labels and Translations   *** months prior to delivery of
                                              the First Aircraft.
--------------------------------------------------------------------------------
Emergency Equipment - Standard                *** months prior to delivery of
Selection/Locations                           the First Aircraft.
--------------------------------------------------------------------------------
Emergency Equipment - Custom                  *** months prior to delivery of
Selection/Locations                           the First applicable Aircraft.
--------------------------------------------------------------------------------
Aircraft Registration Number(s)               *** months prior to delivery of
                                              each Aircraft.
--------------------------------------------------------------------------------
Mode S Transponder Octal Code(s), as          *** months prior to delivery of
applicable                                    each Aircraft.
--------------------------------------------------------------------------------
SELCAL Code(s), as applicable                 *** months prior to delivery of
                                              each Aircraft.
--------------------------------------------------------------------------------
GPWS Audio Call-out (Mode 6) Codes, as        *** months prior to delivery of
applicable                                    each Aircraft.
------------------------------------------------------- ------------------------

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -9-

<PAGE>

                             FORM "A" TO SCHEDULE 4

BUYER'S CUSTOMIZED PAINT SCHEME

US Airways Group, Inc. hereby approves the attached Customized Paint Scheme.

Dated this ___ day of ______________ 200_.

By:  _________________________________
Name:
Title:

cc:  Contracts

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -10-

<PAGE>

                             FORM "B" TO SCHEDULE 4

BUYER'S INTERIOR DECOR AND EMERGENCY EQUIPMENT LIST

US Airways Group, Inc. hereby approves the attached Interior Decor as submitted
by Buyer on ________________, 200_ and confirmed by Bombardier Aerospace on
___________________, 200_ and hereby approves the attached Emergency Equipment
List and Locations.

Dated this ___ day of ______________ 200_.

By:  _________________________________
Name:
Title:

cc:  Contracts

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -11-

<PAGE>

                             FORM "C" TO SCHEDULE 4

BUYER'S PLACARDS, LABELS & MARKINGS

US Airways Group, Inc. hereby approves the attached Placards, Markings, and
Labels as submitted by Buyer on ________________________, 200_ and confirmed by
Bombardier Aerospace on ___________________, 200_.

Dated this ___ day of ______________ 200_.

By:  _________________________________
Name:
Title:

cc:  Contracts

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -12-

<PAGE>

                       Schedule 5 to Supplement MPA-515-3

                           AIRCRAFT CREDIT MEMORANDUM

1.0  ***

2.0  In the event of termination of the Agreement and/or this Supplement with
     respect to any 75 Seat CRJ Aircraft, this Schedule shall automatically
     become null and void with respect to each Aircraft so terminated.

3.0  The provisions of this Schedule are personal to Buyer and shall not, except
     as provided in Article 18 of the Agreement, be assigned or otherwise
     disposed of by Buyer without the prior written consent of Bombardier.

4.0  This Schedule constitutes an integral part of the Supplement and is subject
     to the terms and conditions contained herein.

5.0  Should there be any inconsistency between this Schedule and the Agreement
     and/or the Supplement with respect to the subject matter covered by the
     terms hereof, then this Schedule shall prevail.

6.0  In the event of the termination of the Agreement and or the Supplement,
     this Schedule shall automatically become null and void.

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -13-

<PAGE>

                       Schedule 6 to Supplement MPA-515-3

                   75 Seat CRJ Aircraft Performance Guarantee

1.0  AIRCRAFT CONFIGURATION

     The guarantees listed below are based on the CRJ700 Series 705-ER Aircraft
     configuration as defined in new Bombardier Aerospace ***, with buyer the
     Buyer Selected Optional Features listed in Annex A to this Schedule 13, and
     equipped with GE CF34-8C5 engines as defined in GE Engines Performance
     Model G0173F/pip82b. The weight data corresponds to the optional.. ***

2.0  AIRPORT CONDITIONS

     All maximum take-off weight calculations are based on the conditions
     described below:

     ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -14-

<PAGE>

     Airport    : ***
     Runway     : ***
     Slope      : ***TORA        : ***
     Elev.      : ***
     Temper.    : ***
     Obst.      :     #      distance (ft)    height (ft)

                       ***          ***                     ***
                       ***          ***                     ***
                       ***          ***                     ***
                       ***          ***                     ***
                       ***          ***                     ***
                       ***          ***                     ***

     Airport    : ***
     Runway     : ***Slope       : ***TORA    : ***Elev.  : ***Temper.     : ***
     Obst.      :      #            distance (ft)           height (ft)
                       ***          ***                     ***

     Airport    : ***
     Runway     : ***Slope       : ***
     TORA       : ***Elev.       : ***Temper. : ***
     Obst.      :      #            distance (ft)           height (ft)
                       ***          ***                     ***

     Airport    : BOS, BOSTON INTL
     Runway     : 22R
     Slope      : 0.0 %
     TORA       : 7861 ft
     Elev.      : 19 ft
     Temper.    : 29oC
     Obst.      :      #            distance (ft)           height (ft)
                       1            6200                    131

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -15-

<PAGE>

     Airport    : ***
     Runway     : ***
     Slope      : ***TORA        : ***Elev.    : ***Temper.  : ***
     Obst.      :      #                distance (ft)           height (ft)
                       ***              ***                     ***
                       ***              ***                     ***
                       ***              ***                     ***

     Airport    : ***Runway      : ***Slope    : ***TORA     : ***Elev.   :
     ***Temper. : ***Obst.       : ***

3.0      PERFORMANCE GUARANTEES

3.1      ***

3.1.1    ***

3.1.2    ***

             -------------------------------------------------
              ***              ***                  ***
             -------------------------------------------------
                    ***             ***             ***
             -------------------------------------------------
                    ***             ***             ***
             -------------------------------------------------
                    ***             ***             ***
             -------------------------------------------------
                    ***             ***             ***
             -------------------------------------------------
                    ***             ***             ***
             -------------------------------------------------
                    ***             ***             ***
             -------------------------------------------------

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -16-

<PAGE>

3.2      ***

3.2.1    ***

3.2.2    ***

              Conditions:

         Runway:                                                  ***
         Airport elevation:                                       ***
         Ambient temperature                                      ***

         Runway available - landing (G/S):                        ***

3.2.3    ***

              Conditions:

         Runway:                                                  ***
         Airport elevation:                                       ***
         Ambient temperature                                      ***

         Runway available - landing (G/S):                        ***

3.3      ***

3.4      ***

3.5      ***

3.6      ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -17-

<PAGE>

3.7      ***

3.8      ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -18-

<PAGE>

3.9      ***

3.9.1    ***

                                     TABLE 1

              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------
                  ***        ***        ***      ***          ***
              ------------------------------------------------------

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -19-

<PAGE>

3.9.2    ***

3.9.3    ***

3.9.4    ***

              ***
                  -***                               -***           ***
                  - *********
                  1) ***
                  i) ***
              ***                              ii) ******      iii) ***  iv) ***
                  v) ***
              2)  ***                                -***
                  ***
                  ***
3.10     ***
         ***
         ***
         ***

                 ---------------------------------------------------
                              ***                         ***
                 ---------------------------------------------------
                              ***                         ***
                 ---------------------------------------------------
                              ***                         ***
                 ---------------------------------------------------
                              ***                         ***
                 ---------------------------------------------------
                              ***                         ***
                 ---------------------------------------------------
                              ***                         ***
                 ---------------------------------------------------

         ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -20-

<PAGE>

4.0   WEIGHT GUARANTEES

4.1   ***

      ***
4.2   ***
      ***
      ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***
     ***                                                                ***

4.3   ***

                                               ---------------------------------
                                               Initials

                                               US Airways______ Bombardier______
                                               ---------------------------------

                                      -21-

<PAGE>

      ***

4.4   ***

4.5   ***

      ***

5.0   PERFORMANCE GUARANTEES CONDITIONS

5.1   All guaranteed performance data are based on ***unless noted otherwise.
      Altitudes are pressure altitudes.

5.2   ***are based on the requirements ***.

5.3   ***guarantees are based on ***.

5.4   ***

5.5   ***

5.6   ***

5.7   Normal power extraction assumes a load of ***per engine with both engines
      operative and a load of ***with one engine inoperative.

5.8   Fuel density is assumed to be 6.7 pounds / US gallon. All performance
      guarantees are based on the use of a fuel with a lower heating value
      (LHV) of ***and on an Aircraft centre of gravity location of ***of the
      mean aerodynamic chord.

5.9   With the exception of the performance ***guarantees of Article 3.10, ***

5.10  ***

      ***

      ***

5.11  The Aircraft Fleet includes all delivered Aircraft after a minimum of five
      (5) Aircraft have been delivered.

5.12  Buyer shall operate and maintain the Aircraft and the engines in
      accordance with Bombardier's and engine manufacturer's procedures,
      recommendations and instructions contained in the applicable manuals,
      data and documents provided for the Aircraft. Should Buyer's Aircraft
      not be so maintained, the guarantee values in

                                               ---------------------------------
                                               Initials

                                               US Airways______ Bombardier______
                                               ---------------------------------

                                      -22-

<PAGE>

      Article 3.10 will be adjusted to reflect the resulting adverse effect on
      the Aircraft performance.

5.13  Buyer shall make reasonable efforts to inform Bombardier of any
      modifications made on the airframe or the engines that may affect the
      aerodynamic cleanliness and/or the performance level of the Aircraft
      and Bombardier ***.

5.14  The guarantees of paragraph do not cover Aircraft *** due to airframe or
      engine damage to the extent resulting from (1) Buyer's misuse or
      negligence, (2) Buyer's improper installation, maintenance or operation,
      (3) foreign object damage ("FOD"), or (4) Buyer's employment of engines in
      power-back Aircraft operation. If an Aircraft or Aircraft Fleet is
      affected by the conditions resulting above, ***

5.15  Intentionally left blank.

5.16  In the event of non compliance with the guarantee set forth in paragraph
      3.10, should it become apparent the Buyer has consistently replaced
      engines with fewer hours after "heavy overhaul maintenance" on a new
      Aircraft with engines with greater hours after "heavy overhaul
      maintenance" from an old aircraft and such replacement practices may have
      had an overall negative impact on the performance of the new Aircraft***.

5.17  Subject to the provisions of Article 1.0 to this Schedule 6, the guarantee
      set forth in paragraph 3.10 above is based on the following hypothetical
      delivery schedule.

--------------------------------------------------------------------------
            Year                 Number of aircraft delivered for 75 Seat
                                           CRJ Aircraft fleet
--------------------------------------------------------------------------
            ***                                   ***
--------------------------------------------------------------------------
            ***                                   ***
--------------------------------------------------------------------------
            ***                                   ***
--------------------------------------------------------------------------
            ***                                   ***
--------------------------------------------------------------------------

      If the actual delivery schedule is different from the hypothetical
      delivery schedule presented above, Bombardier will review the impact on
      the ***

CE

6.0   Compliance with *** ***shall be demonstrated by reference to the approved
      Aircraft Flight Manual adjusted to reflect any differences due to change
      in certification requirements or interpretation thereof.

                                               ---------------------------------
                                               Initials

                                               US Airways______ Bombardier______
                                               ---------------------------------

                                     -23-

<PAGE>

6.2   Compliance with the *** be established by calculations based on flight
      test data obtained for an aircraft configuration similar to that defined
      by this specification and shall be demonstrated by reference to the Flight
      Planning and Cruise Control Manual (FPCCM).

6.3   Compliance with the ***

6.4   Compliance with the ***verified, with the method described in Article
      6.4.1, 6.4.2, 6.4.3 and 6.4.4 below.

6.4.1 The Buyer will have the responsibility to ***.

6.4.2 ***, supplied by Bombardier to the Buyer, based on the Flight Planning and
      Cruise Control Manual***.

6.4.3 ***

      ***

      ***

6.4.4 Buyer will have the responsibility to inform Bombardier when the ***shall
      summarize the results from the monitoring program. In the case that the
      Aircraft Fleet is ***.

6.5   Data derived from test shall be adjusted as required by conventional
      methods of correction, interpolation or extrapolation in accordance with
      established aeronautical practices to show compliance with the performance
      guarantees.

                                              ---------------------------------
                                              Initials

                                              US Airways______ Bombardier______
                                              ---------------------------------

                                      -24-

<PAGE>

7.0   ***

7.1   All Guarantees

      In the event of a shortfall in the guarantees contained in this
      performance guarantee, ***.

7.2   ***

      In the event of non-compliance with the individual Aircraft ***set forth
      in Section 3.8 (the "Delivery Guarantee"), the extent of the ***from the
      guarantee value shall be noted at delivery, (the "Deficiency"). ***.

7.3   ***

      ***

      ***

      ***
                    ------------------------------------------------
                               ***                     ***
                    ------------------------------------------------
                               ***                     ***
                    ------------------------------------------------
                               ***                     ***
                    ------------------------------------------------
                               ***                     ***
                    ------------------------------------------------

7.4   ***

      ***

      ***

      ***

      ***

      7.4.1    ***

      7.5      ***

      7.5.1    ***

                                              ---------------------------------
                                              Initials

                                              US Airways______ Bombardier______
                                              ---------------------------------

                                    -25-

<PAGE>

8.0   In the event of termination of the Agreement and/or this Supplement with
      respect to any 75 Seat CRJ Aircraft, this Schedule shall automatically
      become null and void with respect to each Aircraft so terminated.

9.0   The provisions of this Schedule are personal to Buyer and shall not,
      except as provided in Article 18 of the Agreement, be assigned or
      otherwise disposed of by Buyer without the prior written consent of
      Bombardier.

10.0  This Schedule constitutes an integral part of the Supplement and is
      subject to the terms and conditions contained herein.

11.0  Should there be any inconsistency between this Schedule and the Agreement
      and/or the Supplement with respect to the subject matter covered by the
      terms hereof, then this Schedule shall prevail.

12.0  In the event of the termination of the Agreement and/or this Supplement,
      this Schedule shall automatically become null and void.

                                              ---------------------------------
                                              Initials

                                              US Airways______ Bombardier______
                                              ---------------------------------

                                    -26-

<PAGE>

APPENDIX A - *** PROGRAM

The following ***program will be used for ***

A.1 Initial Monitoring Period

***

The Buyer will exert its diligent efforts to ensure that the above data is
obtained during periods of level flight when cruise conditions are steady. In
addition, when such data is being recorded, ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -27-

<PAGE>

***

A.2 *** Period

*** Buyer will continue to monitor the performance level of each Aircraft using
the same procedure as described in paragraph A.1 above***

A.3   ***
..

A.4.  ***

A.5   ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -28-

<PAGE>

                       Schedule 7 to Supplement MPA-515-3

                                       ***

1.0    ***

2.0    ***

3.0    ***

                                      ***
                       ***                      ***
              ***                                           ******
                                                ***
              ***                                           ******
                                                ******
                                      ***

4.0    ***

5.0    ***

6.0    ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -29-

<PAGE>

7.0   ***

7.1   ***

7.2   ***

      a)    ***

      b)    ***

      c)    ***

      d)    ***

      e)    ***

      f)    ***

      g)    ***

      h)    ***

      i)    ***

      j)    ***

      k)    ***

      l)    ***

7.3   ***

7.4   ***

8.0   ***

      8.1   ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -30-

<PAGE>

            a)    ***

            b)    ***

            c)    ***

      8.2   ***

9.0   ***

10.0  ***

      10.1  ***

      10.2  ***

11.0  ***
      11.1  ***

12.0  ***
      12.1  ***

13.0  ***

14.0  ***

15.0  ***

16.0  ***

17.0  ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -31-

<PAGE>

                APPENDIX A of Schedule 7 to Supplement MPA-515-3

                                       ***

                   ***                                     ***
                    ***                                       ***
                    ***                                       ******     ******
                                                              ******     ******
                                                              ******     ******
                                                              ******     ******
                                                              ******     ******
                                                              ******     ******
                                                              ******     ***

                                             -----------------------------------
                                             Initials

                                             US Airways ______ Bombardier ______
                                             -----------------------------------

                                      -32-

<PAGE>

                       Schedule 8 to Supplement MPA-515-3

                                       ***

1.0   ***

2.0   ***

3.0   ***

                                     ***
                      ***                              ***

            ***                                        ***
            ***                                        ***
            ***                                        ******
                                     ******
                      ***

4.0   ***

5.0   ***

6.0   ***

7.0   ***

7.1   ***

7.2   ***

      a)    ***

      b)    ***

      c)    ***

      d)    ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -33-

<PAGE>

      e)    ***

      f)    ***

      g)    ***

      h)    ***

      i)    ***

      j)    ***

      k)    ***

      l)    ***

7.3   ***

7.4   ***

8.0   ***
8.1   ***

      a)    ***

      b)    ***

      c)    ***

8.2   ***

9.0   ***

10.0  ***
10.1  ***

10.2  ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -34-

<PAGE>

11.0   ***

12.0   ***

13.0   ***

14.0   ***

15.0   ***

16.0   ***

17.0   ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -35-

<PAGE>

                APPENDIX A of Schedule 8 to Supplement MPA-515-3

                                            ***

                               ***                      ***
                                  ***                       ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -36-

<PAGE>

                       Schedule 9 to Supplement MPA-515-3

                                      ***

1.0   ***
      1.1     ***
      1.2     ***
      1.3     ***

2.0   ***
      2.1     ***

              2.1.1    ***

              2.1.2    ***

                       a)     ***

                       b)     ***

                       c)     ***

                       d)     ***

                       e)     ***

                       f)     ***

3.0   ***
      3.1     ***

      3.2     ***

      3.3     ***

4.0   ***
      4.1     ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -37-

<PAGE>

        4.2     ***

        4.3     ***

5.0     ***
        5.1     ***

        5.2     ***

        5.3     ***

        5.4     ***

6.0     ***

7.0     ***
        7.1     ***

        7.2     ***

8.0     ***

9.0     ***

10.0    ***

11.0    ***

12.0    ***

13.0    ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -38-

<PAGE>

                APPENDIX A of Schedule 9 to Supplement MPA-515-3

                                       ***

***

1.    ***
2.    ***
3.    ***
4.    ***
5.    ***
6.    ***
7.    ***
8.    ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -39-

<PAGE>

                APPENDIX B of Schedule 9 to Supplement MPA-515-3

                                     ******

***
***

***
***

***

***

***

***

***

***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -40-

<PAGE>

                APPENDIX C of Schedule 9 to Supplement MPA-515-3

                                           ***

                          ***                            ***

                             ***                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ******
                                                            ******      ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -41-

<PAGE>

                       Schedule 10 to Supplement MPA515-3

                                       ***

1.0     ***

        1.1      ***

                 ***

--------------------------------------------------------------------------------
 ***                       ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***`

--------------------------------------------------------------------------------
***                     ***

--------------------------------------------------------------------------------
***                     ***

--------------------------------------------------------------------------------
***                     ***

***                     ***

--------------------------------------------------------------------------------
***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -42-

<PAGE>

                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
--------------------------------------------------------------------------------
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
--------------------------------------------------------------------------------
                        ***
***
                        ***
***
                        ***
***
                        ***
***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
***                     ***
--------------------------------------------------------------------------------
                        ***
***
                        ***
***
                        ***
***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -43-

<PAGE>

                        ***
***

                        ***
***

                        ***
***

***                     ***

***                     ***

***                     ***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
                        ***
***

***                     ***
--------------------------------------------------------------------------------
***                     ***

                        ***
***

***                     ***

                        ***
***

***                     ***

                        ***
***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

***                     ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -44-

<PAGE>

***                     ***
***                     ***
--------------------------------------------------------------------------------
***                     ***
***                     ***
***                     ***
***                     ***
***                     ***
***                     ***
***                     ***
***                     ***
                        ***
***
                        ***
***
                        ***
***
                        ***
***
--------------------------------------------------------------------------------
                        ***
***
                        ***
***
                        ***
***
                        ***
***
***                     ***
***                     ***
                        ***
***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
                        ***
***
***                     ***
--------------------------------------------------------------------------------
***                     ***
***                     ***
***                     ***
                        ***
***
--------------------------------------------------------------------------------
***                     ***
--------------------------------------------------------------------------------
***                     ***
***                     ***
***                     ***
***                     ***
--------------------------------------------------------------------------------

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -45-

<PAGE>

--------------------------------------------------------------------------------
***               ***
--------------------------------------------------------------------------------

2.0    ***

3.0    ***

4.0    ***

5.0    ***

6.0    ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -46-

<PAGE>

                       Schedule 11 to Supplement MPA515-3

                                       ***
1.0      ***

2.0      ***
2.1      ***

                                                      -----------------------
                             ***                      ***
                             ------------------------------------------------
                             ***                      ***
                             ------------------------------------------------
                             ***                      ***
                             ------------------------------------------------
                             ***                      ***
                             ------------------------------------------------
                             ***                      ***
                             ------------------------------------------------

***
***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -47-

<PAGE>

3.0     ***
3.1     ***

3.2     ***
:

                         ***               ***
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                         ***               ***
                         ***               ***

***
3.3     ***

4.0     ***

5.0     ***

6.0     ***

7.0     ***

8.0     ***

9.0     ***

10.0    ***

11.0    ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -48-

<PAGE>

                       Schedule 12 to Supplement MPA-515-3

***

***
***

     ***
2.0  In the event of termination of the Agreement and/or this Supplement with
     respect to any 75 Seat CRJ Aircraft, this Schedule shall automatically
     become null and void with respect to each Aircraft so terminated.

3.0  The provisions of this Schedule are personal to Buyer and shall not, except
     as provided in Article 18 of the Agreement, be assigned or otherwise
     disposed of by Buyer without the prior written consent of Bombardier.

3.0  This Schedule constitutes an integral part of the Supplement and is subject
     to the terms and conditions contained herein.

5.0  Should there be any inconsistency between this Schedule and the Agreement
     and/or the Supplement with respect to the subject matter covered by the
     terms hereof, then this Schedule shall prevail.

6.0  In the event of the termination of the Agreement and/or this Supplement,
     this Schedule shall automatically become null and void.

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -49-

<PAGE>

                       Annex A to Schedule 13 to MPA-515-3

                           75 SEAT CRJ AIRCRAFT - ***

                                       TBD

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -50-

<PAGE>

                                  ATTACHMENT B1

<TABLE>
<CAPTION>
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Airline:                                                         MEDIUM
------------------------------------------------------------------------------------------------------------------
                             Revision Service Term:
------------------------------------------------------------------------------------------------------------------

                            Bombardier Regional Jet                  *       *       *      *       *        *
                            -----------------------                  *       *       *      *       *        *
                              CRJ700 Series 701                      *       *       *      *       *        *

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PUBLICATION TITLE
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***                                                                                ***            ***      ***
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                                                    X= Not Available
------------------------------------------------------------------------------------------------------------------
</TABLE>

   ** ***

   Note:  ***

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -A1-

<PAGE>

                                  ATTACHMENT E

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------
                    CRJ700 Series 701 TECHNICAL PUBLICATIONS
                                   PRICE LIST
------------------------------------------------------------------------------------------------------
Publication #                                   Document Title                         Price (Paper)
------------------------------------------------------------------------------------------------------
<S>              <C>                                                                 <C>
***                ***                                                                 ***
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</TABLE>

                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -A2-

<PAGE>

--------------------------------------------------------------------------------
***         ***                                                      ***
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            ***                                                              ***
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***         ***                                                              ***
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***
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                                              ----------------------------------
                                              Initials

                                              US Airways ______ Bombardier _____
                                              ----------------------------------

                                      -A3-Employment agreement

 Exhibit 10.2 
  
 EMPLOYMENT AGREEMENT AMONG 
 SMITH RIVER COMMUNITY BANK, NATIONAL ASSOCIATION 
 MAINSTREET BANKSHARES, INC. 
 AND RONALD D. HALEY 
  

	This	Employment Agreement (“Agreement”), dated for purposes of identification, March 11, 2004, is made and entered into among MainStreet BankShares, Inc.
(“MainStreet”), a bank holding company which owns all of the outstanding common stock of Smith River Community Bank, National Association (“Employer”), Employer and Ronald D. Haley (“Employee”).

  
 WHEREAS, Employer desires to continue the
employment of Employee as Senior Vice President and Senior Loan Officer of Employer under the terms and conditions set forth herein; 
  
 WHEREAS, Employee is willing to continue in such positions with the Employer; 
  
 WHEREAS, MainStreet is entering into this Agreement to provide Employee with certain benefits under this Agreement which are
provided to Employee through MainStreet. 
  
 NOW, THEREFORE, in
consideration of the premises and mutual covenants and agreements hereinafter set forth, the parties hereto agree as follows: 
  
 SECTION 1. DEFINITIONS. As used in this Agreement, the following capitalized terms have the indicated meanings unless the context clearly requires
otherwise: 
  
 1.01. “Board” means the Board of
Directors of MainStreet and “Bank Board” means the Board of Directors of Employer, as the same may be constituted from time to time unless otherwise expressly provided herein. 
  
 1.02. “Cause” means (a) the continued failure by Employee to perform his duties hereunder (other than any such
failure resulting from his incapacity due to physical or mental illness) or otherwise to comply with his obligations hereunder in the sole and absolute discretion and judgment of the Bank Board, Board or superior officer of the Bank or MainStreet,
after notice by the Board or the Bank Board (excluding Employee, if a member of the Board or Bank Board at such time, in each case) or by a superior officer of the Bank or MainStreet, as the case may be; (b) the engaging by the Employee in illegal
conduct or any conduct which is injurious to the Employer or MainStreet in the sole and absolute discretion and judgment of the Bank Board or the Board or a superior officer of the Bank or MainStreet; or (c) the issuance of a removal order or
similar order by a governmental regulatory agency with appropriate jurisdiction prohibiting Employee from participating in the affairs of the Employer or MainStreet. If the Employee does not correct the deficiency promptly after receipt of the
notice as hereinbefore provided, in the sole and absolute discretion and judgment of the Board or Bank Board (without Employee if a member of the Board or Bank Board at such time) or superior officer of Bank or MainStreet issuing the notice, such
deficiency shall constitute Cause for purposes of the termination of this Agreement. The conditions constituting Cause under Section 1.02 (b) or (c) above shall not require prior notice or any opportunity to cure. Termination for Cause by Employer
shall automatically constitute Termination for Cause by MainStreet and Termination for Cause by MainStreet shall automatically constitute Termination for Cause by Employer. 
  
 1.03. “Date of Termination” means the date Employee’s employment hereunder is deemed terminated, as follows:
(a) other than as provided in Section 1.03(b), (c) or (d), the date specified in the Notice of Termination, which date shall be at least 15 days, but not more than 30 days, after the date of the Notice of Termination except in the case of
termination for Cause, which may be effective as of the date of the Notice of Termination, (b) if Employee’s employment is to be terminated for Disability, fifteen (15) days after Notice of Termination is given (provided that in the case of
Disability the Employee shall not have returned to the performance of his duties on a full-time basis during such fifteen (15) day period), (c) if Employee’s employment is terminated by death, the date of Employee’s death, or (d) if
Employee retires, the date of Employee’s Retirement. 
  
 1.04. “Disability” means (a) as a result of Employee’s physical or mental illness, Employee shall have been absent from the full-time performance of his duties with the Employer for three (3) consecutive months or 90 days
within any 180 day period, and (b) within fifteen (15) days after Notice of Termination pursuant to Section 1.03(b) is given Employee shall not have returned to the full-time performance of his duties. 

 1.05. “Employer” and “MainStreet” includes any corporation or other entity which is
the surviving or continuing entity in respect of any merger, consolidation or form of business combination in which the Employer or MainStreet, respectively, ceases to exist. 
  
 1.06. “Employment Year” means the 12-month period beginning with the Initial Date and each 12-month period
beginning on the annual anniversary of such Initial Date thereafter. 
  
 1.07. “Initial Date” means March 11, 2004. 
  
 1.08. “Notice of Termination” means a written notice that Employee’s employment is terminated that specifies the Date of Termination when required in accordance with Section 1.03. 
  
 1.09. “Person” has the meaning ascribed to that term in Sections
3(a)(9) and 13(d)(3) of the Exchange Act. 
  
 1.10.
“Retirement” means termination of Employee’s employment hereunder after the attainment of age sixty-five (65) or otherwise in accordance with Employer’s or MainStreet’s then established retirement policies. 
  
 1.11. “Successor” means any Person that succeeds to, or has the
practical ability to control (either immediately or with the passage of time) MainStreet’s business directly, by merger or consolidation, or indirectly by purchase of MainStreet’s voting securities, all or substantially all of its assets
or otherwise. 
  
 SECTION II. TERM OF EMPLOYMENT AND
DUTIES. 
  
 2.01. Employment with Employer. Employer
employs Employee under the terms of this Agreement as of the Initial Date as Senior Vice President and Senior Loan Officer of Employer. Employee shall be expected to perform such services as are generally performed by the senior vice president and
senior loan officer of a community, commercial bank. Employee shall comply fully with all policies and procedures established, and all directives given, from time to time, by the Bank Board or by the Board and/or superior officer(s) of either
Employer or MainStreet, as the same may be established from time to time by Employer or MainStreet, and shall comply with all laws, rules and regulations applicable to Employee or his conduct as an officer of Employee. 
  
 2.02. Acceptance of Employment. Employee accepts such employment and
shall devote his full-time, attention and best efforts to the diligent performance of his duties herein specified and as an officer of Employer. While employed hereunder, except as may be specifically authorized in writing by the Board, Bank Board,
or Chief Executive Officer of Employer or MainStreet, Employee will not accept employment or affiliation in any respect with any other individual, corporation, partnership, limited liability company, governmental authority or other entity, or engage
in any other venture for profit. It is understood and agreed that Employee has the right to participate in passive investments that do not interfere with Employee’s performance of his duties in the sole and absolute discretion and judgment of
the Chief Executive Officer of Employer or MainStreet. 
  
 2.03.
Term of Employment. Employee shall be employed by Employer pursuant hereto until the first anniversary of the Initial Date unless Employee’s employment is sooner terminated as set forth herein; provided, however, that beginning with the
first anniversary of the Initial Date and each anniversary thereafter, the term of Employee’s employment shall automatically be extended for one additional Employment Year unless at least thirty (30) days prior to such anniversary date, the
Employer or MainStreet, on the one hand, or the Employee, on the other, shall have given written notice that the Employee’s employment shall not be so extended in which case the term of Employee’s employment shall not be so extended.

  
 2.04. Offices. Termination of employment hereunder
shall include termination of employment as Senior Vice President and Senior Lending Officer of Employer and of all other positions with the Employer and/or MainStreet. 
  
 SECTION III. COMPENSATION AND RELATED MATTERS. 
  
 3.01. Base Salary. From the date hereof and until the Date of Termination. Employee shall have an annual base salary
of $69,570.00, as the same may be adjusted from time to time pursuant hereto. 
  
 3.02. Employee Benefits. Subject to meeting applicable eligibility provisions, Employee shall be entitled to the same medical and health insurance coverage as provided by Employer to its employees generally
from time to time. 
  
 SECTION IV. RIGHTS ON TERMINATION OF
EMPLOYMENT. 
  
 4.01. Mutual Terminations. In the
event that Employer terminates Employee under one or more provisions of this Agreement, such termination shall automatically be deemed an effective termination by MainStreet of Employee under the same provision or provisions of this Agreement. In
the event that MainStreet terminates Employee’s employment under one or more provisions of this Agreement, such termination shall automatically be deemed an effective termination by Employer of Employee under the same provision or provisions of
this Agreement. 
  

 2 

 4.02. Termination for Cause by Employer and MainStreet, Termination for Any Reason by Employee,
Termination on Account of Death. If Employer or MainStreet terminates Employee’s employment for Cause or if Employee terminates his employment hereunder for any reason, or if the Employee’s employment is terminated on account of his
death, the Employer shall pay the Employee his full base salary through the Date of Termination at the rate in effect at the time Notice of Termination is given. No Notice of Termination is required hereunder in the event of Employee’s death,
and the foregoing amounts shall be determined on the date of death. 
  
 4.03. Termination by Employer or MainStreet Without Cause. Upon the termination of the Employee’s employment by Employer or MainStreet without Cause, Employer shall pay Employee a lump sum payment equal to (a) the present value
of the total base salary that Employee would have earned had Employee continued in the Employer’s employ through the remaining term of employment as then in effect, without reference to his termination, such base salary to be at the rate in
effect at the time Notice of Termination is given, and (b) the present value of the Employer’s cost of all welfare and pension benefits then being provided to Employee calculated as if the Employee had continued in the Employer’s employ
through the remaining term of employment as then in effect with the same benefits at the same cost to Employer. 
  
 4.04. Other Terminations. In the event of any termination of Employee’s employment as then in effect which is not provided for in Section
4.03, Employee shall be entitled to no compensation or other benefits whatsoever beyond the Date of Termination. 
  
 4.05. Offset. The amount of any payment provided for in this Section IV shall not be reduced, offset or subject to recovery by the Employer,
MainStreet or Successor by reason of any compensation earned by Employee as the result of employment by another employer after the Date of Termination, or otherwise. 
  
 SECTION V. STOCK OPTION. 
  
 5.01. Stock Option. MainStreet intends to propose to the Board for its consideration and approval a Stock Option Plan (the “Stock Option
Plan”). If such Plan is adopted by MainStreet’s Board of Directors, it is MainStreet’s intent to propose that Employee be granted (the “Grant”) an option (“Option”) to purchase 3,000 shares of MainStreet common
stock vesting annually in blocks of 1,000 shares over a two year period with the first such 1,000 share block vesting on the date of Grant and each additional 1,000 share block vesting on the first and second anniversary of the Grant date,
respectively, upon the terms and conditions set forth in the Stock Option Plan and at a purchase price per share which is equal to the fair market value of Employer common stock on the date of grant as specified in the Grant. 
  
 The Option shall be subject in all respects to the terms and conditions of
the Stock Option Plan and the Grant and may be exercised only in the manner provided therein. 
  
 5.02. Restrictions. The Option and the shares of common stock issuable upon exercise of such Option will not be registered under the Securities Act of 1933 (“Securities Act”), or under the Blue Sky or
other securities laws of any state, and cannot be sold or offered for sale unless subsequently so registered or an exemption from registration is available. Employee understands that these securities will be issued in reliance on § 4(2) of the
Securities Act and other available exemptions from registration under federal and state securities laws and that he may be required to hold the securities indefinitely. All certificates representing the securities shall be subject to stop transfer
orders and shall bear an appropriate restrictive legend. Employee agrees that he will not dispose of any of the securities except in a manner and fashion which is in total compliance with the law and unless and until either (i) Employer shall have
received an opinion of legal counsel satisfactory to it that such disposition does not violate the Securities Act and regulations promulgated thereunder and any applicable state securities laws or regulations, or (ii) the securities have been
validly registered under the Securities Act and any applicable state Blue Sky or securities law. The foregoing notwithstanding, MainStreet shall, at its expense, register any stock issuable pursuant to the exercise of an Option under the Securities
Act and any applicable state Blue Sky or securities law upon Employee’s request, provided, however, that the federal registration can be accomplished on Form S-8, and, in the sole and exclusive opinion of MainStreet, would have no adverse
effect on any offering or sale of MainStreet securities contemplated or underway. 
  
 5.03. Forfeiture. If at any time while the Option is exercisable, a banking regulatory authority makes a formal capital call on MainStreet or Employer, Employee will be required to exercise the Option to the
maximum extent exercisable in whole or part as may be needed for additional required capital or such exercisable options shall be forfeited. Any part of the Option not required to be exercised under the terms of any such capital call may be
exercised under the original terms of the Grant. 
  
 5.04.
Qualified Stock Option. If the Stock Option Plan is adopted by MainStreet’s Board, it is the intent of Employer to seek approval by Employer’s shareholders of the Stock Option Plan at an annual shareholders’ meeting and, if
approved by such shareholders, the Option granted to Employee as 
  

 3 

 contemplated by Section 5.01 may constitute incentive stock options as such term is defined under Section 422 of the
United States Internal Revenue Code; provided, however, that in the event such Stock Option Plan is not, for any reason, adopted by the Board or placed before MainStreet’s shareholders or is not approved by such shareholders in a timely fashion
or otherwise, the Option shall be a nonqualified option. Neither MainStreet nor Employer represents or warrants that the Option will be or is capable of becoming a qualified stock option within the meaning of Section 422 of the U.S. Internal Revenue
Code or that the Stock Option Plan will be presented to MainStreet’s shareholders for approval or, if so presented, will be approved at any time. Nothing herein shall obligate MainStreet or Employer to take any act or refrain from taking any
act in furtherance of qualifying such Option under Section 422. 
  
 SECTION VI. MISCELLANEOUS. 
  
 6.01. Agreement
of Employer’s Successor. Upon Employee’s written request, Employer will have any Successor, by agreement in form and substance satisfactory to Employee, assent to the fulfillment by Employer of its obligations under this Agreement.

  
 6.02. Binding Agreement. This Agreement shall inure to
the benefit of and be enforceable by Employee’s personal or legal representatives, executors, administrators, successors, heirs, distributees, devisees and legatees. If Employee should die while any amount would still be payable to Employee
hereunder if the Employee had continued to live, all such amounts, unless otherwise provided herein, shall be paid in accordance with the terms of this Agreement to Employee’s beneficiary designated in writing and delivered to Employer, if any,
and if none to Employee’s estate. 
  
 6.03. Taxes. All
payments to be made to Employee under this Agreement will be subject to required withholding of federal, state and local and employment and other taxes. 
  
 6.04. Notice. For the purposes of this Agreement, notices and all other communications provided for in the Agreement shall be in writing and shall
be deemed to have been duly given when delivered to Employee or in the case of Employer to the Chief Executive Officer of Employer (unless Employee is the Chief Executive Officer, in which case to the Chairman of the Board) or in the case of
MainStreet to the Chief Executive Officer or mailed by United States registered mail, return receipt requested, postage prepaid and addressed: 
  
 in the case of MainStreet, to the attention of the Chief Executive Officer at the following address: 
  
 MainStreet BankShares, Inc. 
 730 East Church Street 
 Suite 12 

Martinsville, Virginia 24112 
  
 in the case of Employer, to the attention of the Chief Executive Officer of Employer (or the Chairman of the Board or the next highest ranking officer if
Employee is the Chief Executive Officer of Employer) at the following address: 
  
 Smith River Community Bank, National Association 
 730 E. Church Street, Suite 12 
 P.O. Box 1224 
 Martinsville, Virginia
24114-1224 
  
 or, in the case of Employee, to the address set
forth below the Employee’s signature, provided that all notices may be sent to such other address as a party may have furnished to the other(s) in writing in accordance herewith, except that notice of change of address shall be effective only
upon receipt. 
  
 6.05. Modification; Waiver. No provision
of this Agreement may be modified, waived or discharged unless such modification, waiver or discharge is agreed to in writing signed by Employee and the Chief Executive Officer of Employer (or the Chairman of the Board or the next highest ranking
officer if Employee is the Chief Executive Officer of Employer) and Chief Executive Officer of MainStreet. No waiver by either party hereto at any time of any breach by the other party hereto of, or compliance with, any condition or provision of
this Agreement to be performed by such other party shall be deemed a waiver of a similar or dissimilar provisions or conditions at the same or at any prior or subsequent time. No agreements or representations, oral or otherwise, express or implied,
with respect to the subject matter hereof have been made by either party which are not expressly set forth in this Agreement. The validity, interpretation, construction and performance of this Agreement shall be governed by the laws of the
Commonwealth of Virginia. 
  
 To the extent that any provision of
any other agreement between MainStreet or any of its subsidiaries or affiliates and Employee shall limit, qualify or be inconsistent with any provision of this 
  

 4 

 Agreement, then for purposes of this Agreement, while the same shall remain in force, the provision of this Agreement
shall control and such provision of such other agreement shall be deemed to have been superseded, and to be of no force or effect, as if such other agreement had been formally amended to the extent necessary to accomplish such purpose. 

 
 6.06. Validity. The invalidity or unenforceability of any provision
of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement, which shall remain in full force and effect. This Agreement may be executed in several counterparts, each of which shall be deemed to be an
original but all of which together will constitute one and the same instrument. 
  

	SECTION	VII. CONFIDENTIALITY; COVENANT NOT TO COMPETE. 

  
 7.01. Confidentiality. Employee agrees that during and subsequent to his period of employment with Employer, he will not at any time communicate or
disclose to any unauthorized person, without the express prior written consent of the Employer and MainStreet, any proprietary, confidential or nonpublic information concerning the Employer or MainStreet or any subsidiary or affiliate of MainStreet,
their joint and several operations, finances, condition, properties, assets, business or strategic plans, employees, budgets, or any other matter, it being understood, however, that the obligations of this Section shall not apply to the extent that
the aforesaid matters (i) are disclosed in circumstances where Employee is legally required to do so or (ii) become generally known to and available for use by the public otherwise than by the Employee’s wrongful act or omission. 
  
 7.02. Covenant Not to Compete. If the Employee’s employment
hereunder is terminated, the Employee agrees that for a period of two years from the date his employment is terminated, he will not, without the prior, express consent in writing of the Chief Executive Officer of MainStreet, become an officer,
employee, agent, partner, director, consultant, member or substantial stockholder (more than 5% of any class of common or preferred equity, options to acquire the same or convertible debt) of any entity engaged in the commercial or retail banking,
lending or leasing business within a 50 mile radius of the main office of Employer or become associated in any manner with any entity in the process of formation to engage in the retail or commercial banking, lending or leasing business, or any
group that intends to form any such entity in the geographical area described above. 
  
 7.03. Relief. In the event of Employee’s actual or threatened breach of this Section, MainStreet or Successor, as the case may be, and/or Bank shall be entitled to a preliminary restraining order and an
injunction restraining the Employee from violating its provisions. Notwithstanding anything to the contrary herein, Employee agrees that it shall pay all costs and expenses of MainStreet and/or Bank, including but not limited to reasonable expert
witness and legal fees, in connection with any litigation regarding the enforcement of this Section VII. 
  
 7.04. Other Remedies. Nothing in this Agreement shall be construed to prohibit Employer, MainStreet or Successor and/or Bank from pursuing any
other available remedies for such breach or threatened breach, including the recovery of damages from the Employee. If at the time of enforcement of this Section a court holds that the duration, scope or area restrictions stated herein are
unreasonable under the circumstances then existing and, thus, unenforceable, MainStreet and Employee agree that the maximum duration, scope or area reasonable under such circumstances shall be substituted for the stated duration, scope or area.

  
 IN WITNESS WHEREOF, the parties have executed this Agreement
as of the date and year first above written. 
  

									
	 SMITH RIVER COMMUNITY
	 	 MAINSTREET BANKSHARES, INC.

	 BANK, NATIONAL ASSOCIATION
	 	 
				
	 By:
	 	 /s/ C. R. McCullar

	 	 By:
	 	 /s/ C. R. McCullar

	 Its:
	 	 President/CEO
	 	 Its:
	 	 President/CEO

  

			
	 /s/ Ronald D. Haley

	 Ronald D. Haley

		
	Address:	 	153 Wilmoth Road
	 	 	Stuart, VA 24171

  

 5

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