MESA AIR GROUP INC
10-Q, 1997-02-14
AIR TRANSPORTATION, SCHEDULED
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                       OF SECURITIES EXCHANGE ACT OF 1934

                     For the quarter ended December 31, 1996

                         Commission File Number 0-15495


                              MESA AIR GROUP, INC.

           ----------------------------------------------------------
             (Exact name of registrant as specified in its charter)


                Nevada                                   85-0302351
     -------------------------------                 ------------------
     (State or other jurisdiction of                 (I.R.S. Employer
      incorporation or organization)                 Identification No.)


3753 Howard Hughes Parkway, Suite 200, Las Vegas                89109
- ------------------------------------------------              ----------
   (Address of principal executive offices)                   (Zip Code)


Registrant's telephone number, including area code:       (702) 892-3773
                                                          ---------------



Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports) and (2) has been subject to such filing
requirements for the past 90 days.

                                  Yes X  No
                                     ___   ___

On February 12, 1997 the Registrant had outstanding 28,259,715 shares of Common
Stock.


                                        1
<PAGE>   2
PART I.  FINANCIAL INFORMATION

  Item 1.
                              MESA AIR GROUP, INC.

                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

                         Three Months Ended December 31
                    (in thousands, except per share amounts)

<TABLE>
<CAPTION>
                                                                          1996                1995
                                                                       ---------           ---------
<S>                                                                    <C>                 <C>
Operating revenues:
   Passenger                                                           $ 118,876           $ 116,928

   Freight and other                                                       1,701               1,910
   Public service                                                            835               1,191
                                                                       ---------           ---------

          Total operating revenues                                       121,412             120,029

Operating expenses:
   Flight operations                                                      41,978              44,564
   Maintenance                                                            21,293              19,424
   Aircraft and traffic servicing                                         20,398              17,088
   Promotion and sales                                                    17,592              18,116
   General and administrative                                              6,958               7,522
   Depreciation and amortization                                           8,543               5,713
                                                                       ---------           ---------

          Total operating expenses                                       116,762             112,427

          Operating income                                                 4,650               7,602
                                                                       ---------           ---------

Non-operating income (expenses):
   Interest expense                                                       (6,696)             (1,621)
   Interest income                                                           542                 645
   Other                                                                      73                (317)
                                                                       ---------           ---------

          Total non-operating income (expenses)                           (6,081)             (1,293)

          Earnings (loss) before income tax expense (benefit)             (1,431)              6,309
Income tax expense (benefit)                                                (556)              2,435
                                                                       ---------           ---------

   Net earnings (loss)                                                 $    (875)          $   3,874
                                                                       =========           =========

Average common and common equivalent shares outstanding                   28,442              33,679
                                                                       =========           =========

Earnings per common and common equivalent shares outstanding:
   Net earnings (loss)                                                 $   (0.03)          $    0.12
                                                                       =========           =========
</TABLE>


                                       2
<PAGE>   3
                              MESA AIR GROUP, INC.

                      CONDENSED CONSOLIDATED BALANCE SHEETS
                                   (Unaudited)
                      (in thousands, except share amounts)



<TABLE>
<CAPTION>
                                                                        December 31       September 30
                                                                            1996              1996
                                                                          --------          --------
<S>                                                                     <C>               <C>
ASSETS

Current assets:
Cash and cash equivalents                                                 $ 55,095          $ 54,720
    Marketable securities                                                    6,199             5,300
    Receivables, principally traffic                                        42,384            41,105
    Expendable parts and supplies, net                                      25,941            26,956
    Prepaid expenses and other current assets                               10,582             6,394
                                                                          --------          --------

    Total current assets                                                   140,201           134,475

Property and equipment, net                                                472,450           446,727
Lease and equipment deposits                                                10,677            10,889
Intangibles, net                                                            52,247            53,538
Other assets                                                                26,169            27,316
                                                                          --------          --------

Total assets                                                              $701,744          $672,945
                                                                          ========          ========

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
Current portion of long-term debt and capital leases                      $ 18,391          $ 17,127
    Accounts payable                                                        19,828            13,811
    Income taxes payable                                                     3,443             3,708
    Air traffic liability                                                    4,970             4,789
    Accrued compensation                                                     2,090             5,010
    Other accrued expenses                                                  14,462            19,170
                                                                          --------          --------

    Total current liabilities                                               63,184            63,615

Long-term debt and capital leases, excluding current portion               364,995           338,278
Deferred credits                                                            24,405            23,992
Deferred income taxes                                                       23,067            22,394
Stockholders' equity:
    Preferred stock of no par value, 2,000,000 shares
      authorized; no shares issued and outstanding                              --                --
    Common stock of no par value, 75,000,000  shares authorized;
      28,259,715 and 28,243,382 shares issued and outstanding              101,346           100,876
    Retained earnings                                                      120,408           121,283
    Unrealized gain on marketable securities, net                            4,339             2,507
                                                                          --------          --------

Total stockholders' equity                                                 226,093           224,666
                                                                          --------          --------

Total liabilities and stockholders' equity                                $701,744          $672,945
                                                                          ========          ========
</TABLE>


                                        3
<PAGE>   4
                              MESA AIR GROUP, INC.

                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                                 (in thousands)

                         Three Months Ended December 31

<TABLE>
<CAPTION>
                                                                      1996                    1995
                                                                    --------                --------
<S>                                                                 <C>                     <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings (loss)                                                 $   (875)               $  3,874
Adjustments to reconcile net earnings (loss) to
  net cash flows from operating activities:
    Depreciation and amortization                                      8,543                   5,713
    Amortization of deferred credits                                    (458)                   (655)
    Stock bonus plan                                                     348                     441
    Changes in assets and liabilities:
       Receivables                                                    (1,278)                    711
       Expendable parts and supplies                                   1,015                   1,068
       Prepaid expenses and other current assets                      (4,188)                  1,579
       Accounts payable                                                6,016                  (5,775)
       Other accrued liabilities                                      (5,212)                 (1,601)
                                                                    --------                --------

NET CASH FLOWS FROM OPERATING ACTIVITIES                               3,911                   5,355

CASH FLOWS FROM INVESTING ACTIVITIES:
    Capital expenditures                                              (2,090)                 (7,694)
    Proceeds from sale of property and equipment                       1,438                   6,042
    Proceeds from sale of marketable securities                        1,000                      --
    Other assets                                                       1,147                     500
    Lease and equipment deposits                                        (900)                  2,572
                                                                    --------                --------

NET CASH FLOWS FROM INVESTING ACTIVITIES                                 595                   1,420

CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on long-term debt and  obligations
  under capital leases                                                (4,662)                 (7,168)
Proceeds from issuance of common stock                                   122                      48
Stock repurchase program                                                  --                  (5,970)
Proceeds from deferred credits                                           409                     225
                                                                    --------                --------

NET CASH FLOWS FROM FINANCING ACTIVITIES                              (4,131)                (12,865)

NET CHANGE IN CASH AND CASH EQUIVALENTS                                  375                  (6,090)

CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                      54,720                  53,675
                                                                    --------                --------

CASH AND CASH EQUIVALENTS AT END OF PERIOD                          $ 55,095                $ 47,585
                                                                    ========                ========
</TABLE>


                                        4
<PAGE>   5
                              MESA AIR GROUP, INC.

                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                                 (in thousands)

                         Three Months Ended December 31




Supplemental disclosures of cash flow information:

<TABLE>
<CAPTION>
                                                1996                 1995
                                               ------               ------
<S>                                            <C>                  <C>
Cash paid during the period for:
Interest                                       $6,538               $1,621
Income taxes                                       78                1,752
</TABLE>



Mesa purchased property and equipment upon which debt was assumed or incurred
totaling approximately $37 million during the first quarter ending December 31,
1996. Mesa did not purchase any property or equipment upon which debt was
assumed during the quarter ended December 31, 1995.




                                        5
<PAGE>   6
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS


1.    The accompanying unaudited consolidated financial statements have been
      prepared in accordance with generally accepted accounting principles for
      interim financial information and with the instructions to Form 10-Q and
      Article 10 of Regulation S-X. Accordingly, they do not include all of the
      information and footnotes required by generally accepted accounting
      principles for complete financial statements. In the opinion of
      management, all adjustments (consisting of normal recurring accruals)
      considered necessary for a fair presentation have been included. Operating
      results for the three-month period ended December 31, 1996 are not
      necessarily indicative of the results that may be expected for the year
      ending September 30, 1997.

      These financial statements should be read in conjunction with the
      Company's consolidated financial statements and footnotes included in the
      annual report.

2.    The consolidated financial statements include the accounts of Mesa Air
      Group, Inc. and its wholly owned subsidiaries Mesa Airlines, Inc., WestAir
      Holding, Inc., Air Midwest, Inc., MPD, Inc., and FCA, Inc. All significant
      intercompany balances and transactions have been eliminated in
      consolidation.

3.    Income tax expense (benefit) is based upon Mesa's annual effective tax
      rate of 38.6 percent.

4.    Legal Proceedings:

      See Part II.  Item 1.




                                        6
<PAGE>   7
Item 2.

                              MESA AIR GROUP, INC.

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITIONS AND RESULTS OF OPERATIONS


GENERAL

Mesa Air Group, Inc. (collectively referred to herein as "Mesa") is the largest
independently owned regional airline in the world (based upon passenger
enplanements), serving 164 cities in 30 states and the District of Columbia.
Mesa operates a fleet of 183 aircraft as America West Express, Mesa Airlines,
United Express and USAir Express.

        Mesa's business strategy is to achieve sustained, profitable growth by
utilizing focused operating strategies to service routes not generally served
by major air carriers. Mesa implements its strategy by carefully evaluating
market demand on the routes it serves and utilizes its fleet of aircraft to
meet that demand. In addition, Mesa is able to expand the markets it serves
under existing code-sharing agreements with certain of the major air carriers
to benefit from the name recognition, reservation systems and marketing and
promotional efforts of these carriers. Mesa operates a fleet of new and
efficient aircraft and performs most maintenance and overhaul work at its own
facilities. Mesa seeks to maximize gross revenues by managing fares and flight
schedules to increase yields and by developing new markets.

The following tables set forth year-to-year comparisons for the periods
indicated below:

                                 OPERATING DATA

<TABLE>
<CAPTION>
                                                               Three Months Ended
                                                                   December 31
                                                        1996                          1995
                                                     ---------                     ---------

<S>                                                  <C>                           <C>
Passengers                                           1,560,485                     1,610,268
Available seat miles (000)                             589,142                       629,483
Revenue passenger miles (000)                          327,488                       342,901
Load factor                                               55.6%                         54.5%
Yield per revenue passenger mile                          36.3(cent)                    34.1(cent)
Operating cost per available seat mile                    19.8(cent)                    17.9(cent)
Revenue per available seat mile                           20.6(cent)                    19.1(cent)
Average stage length (miles)                               170                           166
Number of aircraft in fleet                                183                           180
Gallons of fuel consumed (000)                          18,502                        17,931
Block hours flown                                      136,162                       136,726
Departures                                             146,067                       153,490
</TABLE>

                                                  FINANCIAL DATA


                                       7
<PAGE>   8
<TABLE>
<CAPTION>
                                                                         Three Months Ended
                                                                             December 31
                                     ----------------------------------------------------------------------------------------
                                                         1996                                           1995
                                     ----------------------------------------------------------------------------------------

                                           Cost per           Percent of total             Cost per        Percent of total
                                             ASM             operating revenues              ASM          operating revenues
                                     ----------------------------------------------------------------------------------------
<S>                                  <C>                     <C>                           <C>          <C>
Flight operations                             7.1(cent)               34.6%                7.1(cent)               37.1%
Maintenance                                   3.6(cent)               17.5%                3.1(cent)               16.2%
Aircraft and traffic servicing                3.5(cent)               16.8%                2.7(cent)               14.2%
Promotion and sales                           2.9(cent)               14.5%                2.9(cent)               15.1%
General and administrative                    1.2(cent)                5.7%                1.2(cent)                6.3%
Depreciation and amortization                 1.5(cent)                7.0%                0.9(cent)                4.8%
                                      -----------------------------------------     -----------------------------------------

Total operating expenses                     19.8(cent)               96.1%               17.9(cent)               93.7%
Interest expense                              1.1(cent)                5.5%                0.3(cent)                1.4%
</TABLE>


OPERATIONS

Operating Revenues:

From the quarter ended December 31, 1995 compared to the quarter ended December
31, 1996, passenger revenues increased by 1.7 percent to $118.9 million.
Available seat miles (ASMs) declined by 6.4 percent to 589.1 million, passengers
carried decreased by 3.1 percent to 1.56 million and load factor increased by
1.1 percentage points to 55.6 percent. Average fare increased from $72.60 in the
prior-year first quarter to $76.20 in the current quarter. Mesa believes the
increase in load factor and average fare is primarily a result of enhanced
revenue management practices and the reduction of capacity in certain markets.
Freight and other revenues declined by 10.9 percent to $1.7 million. Most of
this decline is related to a 6.4 percent reduction in ASMs. Public service
revenue declined by 29.9 percent to $835,000. The decline in public service
revenue was a direct result of a reduction in the amount of essential air
service contracted by the United States Department of Transportation.

Operating Expenses:

Flight Operations:

Flight operations expense decreased to $42.0 million from $44.6 million in the
quarter ended December 31, 1995. The primary cause of this decrease was the
purchase in May 1996 of 69 aircraft formerly operated by Mesa under operating
leases. Had such aircraft remained on operating leases, flight operations
expense would have been approximately $6.7 million higher, but depreciation and
interest expense would have decreased by approximately $2.6 million and $4.7
million respectively. Although the net result of the purchase was an increase of
$600,000 in expenses for the quarter ended December 31, 1996, the completion of
this transaction has resulted in a substantial cash flow benefit to the Company
and, beginning in the 1998 fiscal year, is expected to result in lower and
steadily decreasing aircraft ownership costs for these 69 aircraft as underlying
debt is amortized.


                                       8
<PAGE>   9
For the quarter ended December 31, 1996, the cost of jet fuel increased by 26
percent to $.028 per ASM compared to $.022 per ASM in the quarter ended December
31, 1995, an amount equal to approximately $2.5 million.

Pilot training expense increased by $1 million over the comparative quarter
primarily as a result of integration of de Havilland Dash 8-200 aircraft into
the fleet, the addition of crews for five 30-passenger EMB 120 aircraft added to
the Los Angeles operation in November and December 1996 and pilot turnover.
Pilot salaries and other costs increased by 28 percent per ASM, totaling
approximately $2.0 million over the comparative quarter. Approximately $250,000
of this increase was related to increased salaries under Mesa's new contract
with the Airline Pilot's Association (ALPA) which became effective in December
1996, and $700,000 of the increase in pilot costs relates to salaries of pilots
in training. The remainder of the increase was attributable to additional pilots
hired to operate reserve aircraft.

Approximately $400,000 of costs were incurred during the quarter in the process
of centralizing the dispatch and training facilities in accordance with the
requirements of Mesa's agreement with the Federal Aviation Administration (FAA).
Less than $100,000 was expensed during the period to prepare the Fort Worth
facility for operations and integrate the Canadair Regional Jet (CRJ) into the
fleet. An additional $100,000 expense was incurred in a one-time transfer of
pilots and flight equipment on the West Coast in November 1996 to enable the
closure of two maintenance bases.

Maintenance Expense:

Maintenance expense for the current quarter increased by $1.9 million to $.036
per ASM, a 9.1 percent increase over the $.031 per ASM incurred in the
comparative quarter. Approximately $250,000 of the increase is attributable to a
wage increase granted to the Company's mechanics in September 1996.
Approximately $100,000 of the increase reflects costs to centralize maintenance
practices in accordance with Mesa's agreement with the FAA. In addition $300,000
of the increase was incurred in the closure of two maintenance bases in Arizona
and Oregon. The closure of these bases was made possible by the transfer of
pilots and flight equipment and is expected to save approximately $350,000 of
maintenance overhead expense per year. The balance of the increase in
maintenance expense was caused primarily by increased airframe maintenance
costs, the timing of annual "C"-check maintenance procedures on aircraft and
increased staffing levels to improve dispatch reliability.

Aircraft and Traffic Service Expense:

Aircraft and traffic service expense of $20.4 million increased by $3.3 million,
or 19 percent, over the prior-year comparable quarter. Station wages represented
$1.3 million of this increase. Expense in the amount of $500,000 was incurred
during the period to provide additional customer service representatives to the
Denver operation. Non-completion costs increased by $600,000 to $1.2 million
over the prior-year period as a result of severe weather conditions causing a
high percentage of flight cancellations throughout the system.



                                        9
<PAGE>   10
Promotion and Sales Expense:

Promotion and sales expenses of $17.6 million declined by 2.9 percent over the
prior year's quarter. This decline is in proportion to a 3.1 percent decrease in
revenue passengers over the comparable period.

General and Administrative Expense:

General and administrative expense declined by $600,000 to $7.0 million over the
comparable period. Approximately half of the decrease related to a decline in
management bonus accrual in the current year. General and administrative expense
for the current quarter included $225,000 in costs related to recruiting
additional management positions required by Mesa's agreement with the FAA.

Depreciation, Amortization and Interest Expense:

Depreciation and amortization increased by $2.8 million, and interest expense
increased by $5.1 million over the comparable period of the prior year. The
increase in interest expense, depreciation and amortization is primarily the
result of the purchase of 69 aircraft previously financed by operating leases,
as explained under the Flight Operations Expense heading above.

Other Factors:

Mesa expensed approximately $725,000 during the current fiscal quarter in the
process of centralizing operations in accordance with its agreement with the
FAA. Management believes the total cost of centralization will amount to less
than the $2.5 million previously estimated. The process is expected to be
completed prior to the end of the current fiscal year.

The costs of centralization and the timing of completion are forward-looking
statements that involve a number of risks and uncertainties which could cause
actual results to differ materially from the forward-looking statements which
include, among other factors, promulgation of future FAA regulations or
administrative rules or informal requests by the FAA requiring the hiring of
additional personnel or payment of fines, the impact of future laws or
Congressional investigations and governmental regulations affecting the
Company's operations, or significant events which affect the Company's
operations causing a delay in implementation of centralization.


LIQUIDITY AND CAPITAL RESOURCES

The Company's cash and marketable securities at December 31, 1996 were $61
million compared to $60 million at September 30, 1996. The Company has
historically generated cash from operations which has been sufficient to meet
its operating needs. Cash, cash equivalents and marketable securities are
intended to be used for working capital, acquisitions and capital expenditures.

Mesa had receivables of $42 million at December 31, 1996 which consist primarily
of amounts due from code-sharing partners United and USAir. Under the terms of
the United and USAir agreement, Mesa receives a substantial portion of its
revenues through the Airline Clearing House. Historically, Mesa has generated
adequate cash flow to meet its operating needs.

Mesa currently has a $20 million line of credit, of which approximately $16
million is available. This line of credit is primarily used to facilitate the
issuance of letters of credit.

As of December 31, 1996, the Company had aggregate indebtedness of $383 million
payable to various parties under promissory notes issued in connection with the
purchase of 110 aircraft. The notes have 


                                       10
<PAGE>   11
interest rates ranging from 6.3 percent to 7.3 percent, maturities ranging 
through 2009 and require monthly installments aggregating approximately
$1.2 million.

In addition, the Company has significant lease obligations on existing aircraft
operated by the Company. These leases are classified as operating leases and
therefore are not reflected as liabilities on the balance sheet. At December 31,
1996, 73 aircraft were leased by the Company with terms ranging up to 16 1/2
years. Aircraft lease expense for the quarter ended December 31, 1996 was $19.5
million. Future lease payments due under all aircraft operating leases were
approximately $241 million at December 31, 1996.

Mesa is planning to continue to operate two Fokker 70 aircraft through August
1997 at existing lease rates. In addition, Mesa has agreed to pay time-related
costs for use of the aircraft through the date of return.

Mesa has an aircraft order with Bombardier, Inc. to acquire 25 de Havilland Dash
8-200 aircraft worth $262.5 million with deliveries, which were scheduled to
begin in early 1996, through March 1998. Due to production delays, the delivery
schedule was delayed and Mesa was granted an option to cancel up to five of the
25 aircraft on order. The option expires April 30, 1997. As of December 31,
1996, Mesa had taken delivery of nine Dash 8-200 aircraft. Mesa has arranged
financing commitments for 19 of the 25 aircraft and is presently arranging
financing for the remaining aircraft on order. Bombardier will participate as
needed to finance any new aircraft deliveries. Mesa also has an option to
acquire 25 additional de Havilland Dash 8-200 aircraft. The Dash-8-200 aircraft
purchase agreement provides for a spare parts supply program, which includes all
required parts to maintain the aircraft, excluding engines and propellers, for a
period of seven years. Mesa will pay a fixed hourly charge per flight hour for
this spare parts supply program.

During August 1996, Mesa entered into a memorandum of understanding to acquire
16 Canadair Regional 50-passenger jet aircraft ("CRJs") worth approximately
$320 million with deliveries to begin in February 1997. Mesa will trade in 12
Embraer Brasilia aircraft for the 16 Canadair Regional jet aircraft on order. An
$8.3 million deposit has been made to Bombardier, Inc. related to this
commitment, and Bombardier will participate as needed to provide financing for
the CRJs to be acquired by Mesa. Mesa has options to acquire an additional 32
CRJ aircraft. In January 1997, Mesa and Bombardier completed a definitive
agreement regarding the acquisitions of the CRJs.

During December 1995, the Federal Aviation Administration (FAA) announced rules
which require commuter airlines with aircraft of 10 or more passenger seats
operating under FAR Part 135 rules to begin operating those aircraft under FAR
Part 121 regulations by the end of March 1997. Mesa is one of the largest
regional airlines operating under FAR Part 135 regulations. In anticipation of
Mesa's conversion to FAR Part 121 and to address issues raised in past
inspections, the FAA began a special review of Mesa's operations in June 1996.

As a result of the special review by the FAA of Mesa's operations, a consent
order was signed in September 1996 assessing a compromise civil penalty of
$500,000. Mesa paid $250,000 of the compromise amount, and the remaining
$250,000 may be waived in September 1997 upon Mesa complying with provisions of
the consent order. Under the consent order, Mesa has agreed to adopt operational
standards that exceed the requirements of the Federal Aviation Regulations. The
consent order requires that control of operational areas (maintenance, flight
operations and training) be consolidated under one central management team. The
Company has until September 1997 to complete the specified tasks. At present the
Company is in compliance with all but four items on the FAA's timetable. The
Company anticipates returning to full compliance with the timetable within 90
days. During any period of noncompliance, extension of times are available for a
fee of $5,000 per item for each 30-day extension. The timing of a return to full
compliance with FAA regulations is a forward-looking statement that involves a
number of risks and uncertainties which could cause actual results to differ
materially from the forward-looking statement which includes, among other
factors, promulgation of further FAA regulations or administrative rules or
informal requests by the FAA requiring the hiring of additional personnel or


                                       11
<PAGE>   12
payment of additional fines, the impact of future laws or Congressional
investigations and governmental regulations affecting the Company's operations,
or significant events which affect the Company's operations causing a delay in
completing the specified tasks.

Based on the required conversion to FAR Part 121 and the provisions of the FAA
consent order, Mesa anticipates a one-time capital expenditure of approximately
$1.0 million in fiscal 1997 to bring all aircraft currently being operated by
Mesa into compliance with the enacted FAR Part 121 rules. In addition, Mesa
presently anticipates ongoing operational costs in order to comply with the FAR
Part 121 rules and consent order of approximately $2.5 million per year. Mesa
management is also monitoring the extent of the new costs to be imposed on its
19- and 30-seat aircraft operations by implementation of additional operating
procedures required by FAR Part 121 beginning in March 1997. Efforts will be
made to minimize the cost of these additional procedures while fully meeting the
new requirements. The costs of converting aircraft to comply with FAA Part 121
and ongoing operational compliance costs are forward-looking statements that
involve a number of risks and uncertainties which could cause actual results to
differ materially from the forward-looking statements which include, among other
factors, promulgation of future FAA regulations or administrative rules or
informal requests by the FAA requiring the hiring of additional personnel, the
addition of new aircraft mechanical equipment and the payment of additional
fines, and the impact of future laws or Congressional investigations and
governmental results increasing the costs of compliance.


OTHER EVENTS

Mesa expects its ASM capacity to increase steadily throughout the balance of the
current fiscal year with deliveries of new Dash 8-200 aircraft, now arriving on
a consistent schedule, and deployment of the CRJ in Fort Worth, Texas scheduled
for May 1997. The anticipated ASM capacity is a forward-looking statement which
involves a number of risks and uncertainties which could cause results to
materially differ from the forward-looking statement. The following is a list of
factors, among others, that could cause actual results to materially differ: a
decrease in the existing flights of the Company caused by unforeseen market
conditions, competition, or by termination of any of the code-share agreements
with a major carrier or the financial setbacks of any of the Company's
code-sharing partners, unfavorable resolution of negotiations with
municipalities for the leasing of facilities, material delays in completion by
the manufacturer of ordered and yet-to-be delivered aircraft, fuel price
increases or changes in regional economic conditions, delay in FAA Part 121
certification for CRJ operation, shortage of pilots certified to operate the
Dash 8-200 or CRJs, or insufficient demand from passengers to justify projected
aircraft departures out of the Fort Worth, Texas hub.

Mesa has received sufficient Dash 8-200 aircraft to provide the proper capacity
to its Denver operation for its 1997 peak ski season and summer operations and
expects the operations there to improve significantly. However, the high cost of
operations at Denver International Airport are of continuing concern to the
management of Mesa. Therefore, substantial efforts are currently in process to
reduce and control costs of the Denver system. Expected improvement and
increased efficiency in the Denver operation is a forward-looking statement
which involves a number of risks and uncertainties which could cause actual
results to materially differ from the forward-looking statement. The following
is a list of factors, among others, that could cause actual results to
materially differ: fuel price increases or changes in regional economic
conditions which decrease demand for flights to ski destinations, changes in FAA
Part 121 certification for Dash 8-200 operation which requires additional
training, shortage of pilots certified to operate the Dash 8-200 and increasing
pilot turnover, or failure to reduce the high costs of operation in Denver
resulting in the scheduling of fewer flights.

Should management's efforts to reduce costs in the Denver system not result in
acceptable operating margins, or should certain other operations become
unprofitable as a result of costs imposed by new Part 


                                       12
<PAGE>   13
121 operating regulations, service levels for unprofitable routes may be reduced
and aircraft transferred to more suitable opportunities.

The following table lists the aircraft operated by Mesa as of December 31, 1996:


<TABLE>
<CAPTION>
                               Number of Aircraft
                         ------------------------------    Passenger 
  Type of Aircraft       Owned       Leased       Total     Capacity 
- ---------------------------------------------------------------------
<S>                      <C>         <C>         <C>       <C>
Beechcraft 1900           108          10          118          19
Embraer Brasilia            2          30           32          30
BAe Jetstream 31                       21           21          19
Dash 8-200                              9            9          37
Dash 8-300                              1            1          50
Fokker 70                               2            2          78
                         ------------------------------
Total                     110          73          183
                         ------------------------------
</TABLE>


                                       13
<PAGE>   14
PART II.      OTHER INFORMATION

Item 1.       Legal Proceedings

              The contents of Item 3. Legal Proceedings from the Form 10-K filed
              for the fiscal year ended September 30, 1996 has been incorporated
              by reference.


Item 2.       Change in Securities

              None

Item 3.       Defaults Upon Senior Securities

              None

Item 4.       Submission of Matters to a Vote of Security Holders

              None

Item 5.       Other Information

              None

Item 6.       Exhibits and Reports on Form 8-K

              Exhibit 10.83   Bombardier Regional Aircraft        Filed herewith
                              Division Purchase Agreement
                              CRJ-0351 between Bombardier,
                              Inc. and Mesa Air Group, Inc.
                              This Exhibit is the subject
                              of a confidential treatment
                              request and certain
                              confidential portions have
                              been omitted and filed
                              separately with the Securities
                              and Exchange Commission as
                              indicated by the bracketed
                              language [CONFIDENTIAL PORTION
                              DELETED AND FILED SEPARATELY
                              WITH THE SECURITIES AND
                              EXCHANGE COMMISSION].


                                   SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the duly
authorized undersigned.

                                            MESA AIR GROUP, INC.
                                            Registrant


Date: February 14, 1997                     /s/ W. Stephen Jackson
                                            ------------------------------------
                                            W. Stephen Jackson
                                            Chief Financial Officer
                                            (Principal Accounting Officer)


                                       14

<PAGE>   1
                                                                   Exhibit 10.83


                      BOMBARDIER REGIONAL AIRCRAFT DIVISION


                               PURCHASE AGREEMENT


                                    CRJ-0351






                                     Between


                                 BOMBARDIER INC.


                                       and


                              MESA AIR GROUP, INC.











                           Relating to the Purchase of
                   Sixteen (16) Canadair Regional Jet aircraft


          [Confidential portions of this exhibit have been deleted and  
          filed seperately with the Securities and Exchange Commision]
     

<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<S>                                                                         <C>
ARTICLE 1.    INTERPRETATION.................................................1


ARTICLE 2.    SUBJECT MATTER OF SALE.........................................2


ARTICLE 3.    [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................3


ARTICLE 4.    [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................3


ARTICLE 5.    [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................4


ARTICLE 6.    [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................5


ARTICLE 7.    BUYER INFORMATION..............................................5


ARTICLE 8.    CERTIFICATION..................................................7


ARTICLE 9.    [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................9


ARTICLE 10.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]..........................................11


ARTICLE 11.   CHANGES.......................................................11


ARTICLE 12.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]..........................................12


ARTICLE 13.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]..........................................13


ARTICLE 14.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]..........................................14
</TABLE>
<PAGE>   3
<TABLE>
<S>                                                                          <C>
ARTICLE 15.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................15


ARTICLE 16.   TERMINATION....................................................15


ARTICLE 17.   NOTICES........................................................17


ARTICLE 18.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................18


ARTICLE 19.   [CONFIDENTIAL PORTION DELETED AND FILED
              SEPARATELY WITH THE SECURITIES AND
              EXCHANGE COMMISSION]...........................................19


ARTICLE 20.   ASSIGNMENT.....................................................21


ARTICLE 21.   SUCCESSORS.....................................................22


ARTICLE 22.   APPLICABLE LAWS................................................22


ARTICLE 23.   CONFIDENTIAL NATURE OF AGREEMENT...............................22


ARTICLE 24.   AGREEMENT......................................................22

</TABLE>

APPENDIX I    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                 SECURITIES AND EXCHANGE COMMISSION]
APPENDIX II   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION]
APPENDIX III  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION]
APPENDIX IV   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION]
APPENDIX V    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION]

EXHIBIT I     Certificate Of Acceptance
EXHIBIT II    BILL OF SALE
EXHIBIT III   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION]
EXHIBIT IV    CHANGE ORDER
<PAGE>   4
         This Agreement is made on the ______ day of ________________, 1997.


         BY AND BETWEEN:    BOMBARDIER INC., a Canadian Corporation represented
                            by its BOMBARDIER REGIONAL AIRCRAFT DIVISION (BRAD)
                            having an office at Garratt Boulevard, Downsview, 
                            Ontario, Canada.

                            Unless the context requires otherwise, references 
                            made herein to BRAD herein also include de Havilland
                            Inc. and its subsidiaries and Canadair Division,

                            (collectively "BRAD")

         AND:               MESA AIR GROUP, INC.,
                            2325 East 30th Street
                            Farmington, New Mexico,
                            U.S.A. 87401

                            ("Buyer")

         WHEREAS, Bombardier Inc., through its Canadair Manufacturing Division,
is engaged in the manufacture of the Canadair Regional Jet aircraft products;
and BRAD has been created for the purpose of providing marketing, sales and
customer support services for the Canadair Regional Jet aircraft and related
products;

         WHEREAS, Buyer desires to purchase sixteen (16) Aircraft, (as later
defined), and related data, documents, and services according to this Agreement,
(as later defined), and BRAD desires to arrange the sale of such Aircraft, data,
documents and services to Buyer,

         NOW THEREFORE, in consideration of the mutual covenants herein
contained, Buyer and BRAD agree as follows:


ARTICLE 1.        INTERPRETATION.


          1.1.    The recitals above have been inserted for convenience only 
and do not form part the Agreement.


          1.2.    The headings of the Articles of this Agreement are included 
for convenience only and shall not be used in the construction and
interpretation of this Agreement.


          1.3.    In this Agreement, unless otherwise expressly provided, the 
singular includes the plural and vice-versa.


          1.4.    In this Agreement the following expressions shall, unless 
otherwise expressly provided, mean:
<PAGE>   5
         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION];


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION];


                  "Agreement" means this Agreement, including its Exhibits,
         Annexes, Appendices and Letter Agreements, if any, attached hereto
         (each of which is incorporated in the Agreement by this reference), as
         they may be amended pursuant to the provisions of the Agreement;


                  "Aircraft" shall have the meaning attributed to it in Article 
         2.1;


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
              AND EXCHANGE COMMISSION];


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
              AND EXCHANGE COMMISSION];


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
              AND EXCHANGE COMMISSION];


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
              AND EXCHANGE COMMISSION];


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
              AND EXCHANGE COMMISSION];


         "FAA"  shall have the meaning attributed to it in Article 8.1;


         "Notice" shall have the meaning attributed to it in Article 17.1;


         "Permitted Change" shall have the meaning attributed to it in Article 
               11.2;


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
               AND EXCHANGE COMMISSION];


         "Regulatory Change" shall have the meaning attributed to it in Article
                8.4;


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
               AND EXCHANGE COMMISSION]


         "Taxes" shall have the meaning attributed to it in Article 4.3.


          1.5.   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES EXCHANGE COMMISSION].




                                       -2-
<PAGE>   6
ARTICLE 2.     SUBJECT MATTER OF SALE.


            2.1. Subject to the provisions of this Agreement, BRAD will sell and
Buyer will purchase sixteen (16) Canadair Regional Jet aircraft [CONFIDENTIAL
PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION].


ARTICLE 3.      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                SECURITIES AND EXCHANGE COMMISSION].


            (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES EXCHANGE COMMISSION].


            (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES EXCHANGE COMMISSION].


            (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 4.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].


            4.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            4.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            4.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            4.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            4.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 5.    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
              SECURITIES AND EXCHANGE COMMISSION].


            5.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            5.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].




                                       -3-
<PAGE>   7
            5.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            5.4. Buyer shall make [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] to BRAD's account in the
following manner:


         (a)      Transfer to:                National Bank of Canada
                                              New York, N.Y. 10101 USA
                                              Fed. ABA 026005487


         (b)      For credit to:              National Bank of Canada
                                              UID 014897
                                              600 de la Gauchetiere St. West
                                              Montreal, Quebec, H3B 4L3
                                              Transit No. 1504-1


         (c)      For further credit to:      Bombardier Inc.
                                              Canadair Division
                                              Account No.: 00-586-64


            5.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            5.6. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            5.7. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 6.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                 SECURITIES AND EXCHANGE COMMISSION].


            6.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 7.       BUYER INFORMATION


            7.1. During [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION], Buyer [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION], Buyer [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]:




                                       -4-
<PAGE>   8
                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


          [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            7.2 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            7.3. The [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION] BRAD pursuant to this Article shall
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]:


                      (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
               WITH THE SECURITIES AND EXCHANGE COMMISSION]


                      (2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
               WITH THE SECURITIES AND EXCHANGE COMMISSION];




                                       -5-
<PAGE>   9
                   (d)     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
          WITH THE SECURITIES AND EXCHANGE COMMISSION];


                   (e)     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
          WITH THE SECURITIES AND EXCHANGE COMMISSION];


                   (f)     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
          WITH THE SECURITIES AND EXCHANGE COMMISSION].


            7.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            7.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (e) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (f) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


            7.6. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            7.7. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]




                                       -6-
<PAGE>   10
                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 8.       CERTIFICATION.


            8.1. BRAD has obtained from Transport Canada ("TC") a TC Type
Approval (Transport Category) and from the Federal Aviation Administration of
the United States ("FAA") an FAA Type Certificate for [CONFIDENTIAL PORTION
DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].


            8.2. BRAD [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


            8.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            8.4. If any addition or change to, or modification or testing
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] is required by any law or governmental regulation or
requirement or interpretation thereof by any governmental agency having
jurisdiction in order to [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


            8.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            8.6. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            8.7. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            8.8. If the use of any of the certificates identified in this
Article 8 are discontinued during the performance of this Agreement, reference
to such discontinued certificate shall be deemed a reference to any other
certificate or instrument which corresponds to such certificate or, if there
should not be any such other certificate or instrument, [CONFIDENTIAL PORTION
DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].




                                       -7-
<PAGE>   11
ARTICLE 9. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH SECURITIES 
           AND EXCHANGE COMMISSION].


            9.1.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.1.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            9.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.6. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.7. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].




                                       -8-
<PAGE>   12
            9.8. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            9.9. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 10.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION].


            10.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            10.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 11.       CHANGES.


            11.1. Other than [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION] as described in [CONFIDENTIAL
PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION], any change to this Agreement [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]. Should Buyer
request a change, BRAD shall advise Buyer of the effect, if any, of such change
request on:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].


            11.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]:




                                       -9-
<PAGE>   13
                      1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                  THE AND EXCHANGE COMMISSION]


                      2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                  THE SECURITIES AND EXCHANGE COMMISSION]


                      3) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                  THE SECURITIES AND EXCHANGE COMMISSION],


[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


ARTICLE 12.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION].


            12.1. From time to time, commencing with the date of this Agreement
and [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


            12.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            12.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            12.4. At any time [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION].


            12.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 13.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION].


            13.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];




                                      -10-
<PAGE>   14
                 (d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (e) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (f) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (g) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (h) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (i) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            13.2. (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


            (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            13.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            13.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 14.        [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                   SECURITIES AND EXCHANGE COMMISSION].


            14.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            14.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            14.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].




                                      -11-
<PAGE>   15
ARTICLE 15.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION].


            15.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 16.       TERMINATION.


            16.1. This Agreement may be terminated, in whole or in part, with
respect to any or all of the Aircraft before the Delivery Date by BRAD or Buyer
by notice of termination to the other party upon the occurrence of any of the
following events:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            16.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            16.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            16.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]




                                      -12-
<PAGE>   16
                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            16.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 17.     NOTICES.


            17.1. Any notice, request, approval, permission, consent or other
communication ("Notice"), to be given or required under this Agreement shall be
provided in writing, by registered mail, facsimile, courier, telegraphic or
other electronic communication providing reasonable proof of transmission,
except that no notice shall be sent by mail if disruption of postal service
exists or is threatened either in the country of origin or of destination, by
the party giving the Notice and shall be addressed as follows:


         (a)      Notice to BRAD shall be addressed to:
                  Bombardier Inc.
                  Bombardier Regional Aircraft Division
                  Garratt Boulevard
                  Downsview, Ontario
                  Canada
                  M3K 1Y5
                  Attention:  Walter A. Galloway, Director, Contracts
                  Telex:  06-22128
                  Facsimile:  (416) 375-4533


         (b)      Notice to Buyer shall be addressed to:
                  Attention: Mr. Larry Risley, Chairman
                  Mesa Air Group, Inc.
                  2325 East 30th
                  Farmington, New Mexico
                  U.S.A. 87401
                  Facsimile: 505-326-4485


            17.2. Notice given in accordance with Article 17.1 shall be deemed
sufficiently given to and received by the addressees:


                 (a) if delivered by hand, on the day when the same shall have 
          been so delivered; or


                 (b) if mailed or sent by courier on the day indicated on the
          corresponding acknowledgment of receipt; or


                 (c) if sent by telex or facsimile on the day indicated by the
          acknowledgment or the answer back of the receiver in provable form.




                                      -13-
<PAGE>   17
ARTICLE 18.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION].


            18.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]:


                 (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            18.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            18.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            18.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 19.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION].


            19.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            19.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION],


                 A. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];




                                      -14-
<PAGE>   18
                 B. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION];


                 C. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


                 D. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


            19.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            19.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].


            19.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].


ARTICLE 20.       ASSIGNMENT.


            20.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            20.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            20.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            20.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            20.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 21.       SUCCESSORS.


         This Agreement shall inure to the benefit of and be binding upon each
of BRAD and Buyer and their respective successors.




                                      -15-
<PAGE>   19
ARTICLE 22.    APPLICABLE LAWS.


            22.1. This Agreement shall be subject to and construed in accordance
with and the rights of the parties shall be governed by [CONFIDENTIAL PORTION
DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].


            22.2. BRAD's obligations under this Agreement shall be subject to
and apply only to the extent permitted by applicable laws, regulations,
directives and/or orders [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 23.    CONFIDENTIAL NATURE OF AGREEMENT.


            23.1. This Agreement is confidential between the parties and shall
not, without the prior written consent of the other party, be disclosed by
either party in whole or in part to any other person or body except as may be
necessary for either party to carry out its obligations under this Agreement and
fulfill its obligations under the applicable securities laws governing each
party. The parties shall however only disclose those parts of the agreement
which are expressly required by such securities laws.


            23.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            23.3. Either party may announce the signing of this Agreement by
means of a notice to the press provided that the content and date of the notice
has been agreed to by the other party.


ARTICLE 24.    AGREEMENT.


            24.1. This Agreement and the matters referred to herein constitute
the entire Agreement between BRAD and Buyer and supersede and cancel all prior
representations, brochures, alleged warranties, statements, negotiations,
undertakings, letters, memorandum of Agreement, acceptances, agreements,
understandings, contracts and communications, whether oral or written, between
BRAD and Buyer or their respective agents, with respect to or in connection with
the subject matter of this Agreement and no agreement or understanding varying
the terms and conditions hereof shall be binding on either BRAD or Buyer hereto
unless an amendment to this Agreement is issued and duly signed by their
respective authorized representatives pursuant to the provisions of this Article
hereof. All Appendices, Exhibits and Annexes referred to herein and attached
hereto are made part of this Agreement by reference. In the event of any
inconsistencies between this Agreement and any of the Appendices, Exhibits and
Annexes or other documents referred to herein, the provisions of this Agreement
shall prevail.


            24.2. If any of the provisions of this Agreement are for any reason
declared by judgment of a court of competent jurisdiction to be unenforceable or
ineffective, those


                                      -16-
<PAGE>   20
provisions shall be deemed severable from the other provisions of this Agreement
and the remainder of this Agreement shall remain in full force and effect.


            24.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


            24.4. BRAD and Buyer confirm to each other they have each obtained
the required authorizations and fulfilled any conditions applicable to enable
each of them to enter into this Agreement.


                                      -17-
<PAGE>   21
     IN WITNESS WHEREOF this Agreement was signed on the date written hereof:



For and on behalf of                              For and on behalf of


BUYER:                                            BRAD:





Per:  ___________________________________         Per:__________________________
   Title:  ______________________________            Title:_____________________


                                      -18-
<PAGE>   22
                                   APPENDIX I


   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                              EXCHANGE COMMISSION]
<PAGE>   23
                                   APPENDIX II
   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                              EXCHANGE COMMISSION]
<PAGE>   24
                                  APPENDIX III
   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                              EXCHANGE COMMISSION]
                                SEPTEMBER 24 1996

<PAGE>   25
                                   APPENDIX IV


   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                              EXCHANGE COMMISSION]
<PAGE>   26
                                   APPENDIX V

[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]
<PAGE>   27
                                                                       EXHIBIT I

[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]
<PAGE>   28
                                                                      Exhibit II


                                  BILL OF SALE


            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]
<PAGE>   29
                                                                     EXHIBIT III

[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]
<PAGE>   30
                                                                      Exhibit IV

[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]
<PAGE>   31
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]

                                       -2-


<PAGE>   32
                              MESA AIR GROUP, INC.
                           CRJ-0351 LETTER AGREEMENTS


B96-7701-RJTL-CRJ0351-001               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-002               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-003               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-004               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-005               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-006               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-007               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-008               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-009               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-010               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-011               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-012               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-013               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

<PAGE>   33

B96-7701-RJTL-CRJ0351-014               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]

B96-7701-RJTL-CRJ0351-015               [CONFIDENTIAL PORTION DELETED AND FILED
                                        SEPARATELY WITH THE SECURITIES AND
                                        EXCHANGE COMMISSION]
<PAGE>   34
                                 BOMBARDIER INC.
                      BOMBARDIER REGIONAL AIRCRAFT DIVISION
                                GARRATT BOULEVARD
                               DOWNSVIEW, ONTARIO
                                 CANADA M3K 1Y5
                            TELEPHONE (416) 633-7310



                                February 12, 1997



Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401


Attention: Mr. Larry Risley, Chairman


Gentlemen:


         Re: Letter Agreement No. 001 [CONFIDENTIAL PORTION DELETED AND FILED 
             SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]


         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").


         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.


         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.


         Subject:  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]


         Section 1.0. In consideration of Buyer having entered into the above
referenced Agreement, BRAD agrees to reserve sixteen (16) additional aircraft
(the "Option Aircraft") [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]:
<PAGE>   35
          Section 1.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


          Section 1.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


          Section 1.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


          Section 1.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


          Section 1.6. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]:


               (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


               (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION].


          Section 2.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


          Section 3.0. In the event of the termination of the Agreement, this
Letter Agreement shall become automatically null and void.


          Section 4.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


          Section 5.0. The provisions of this Letter Agreement are personal to
Buyer and shall not be assigned or otherwise disposed of by Buyer without the
prior written consent of BRAD.




                                       -2-
<PAGE>   36
          Should there be any inconsistency between this Letter Agreement and
the Agreement with respect to the subject matter covered by the terms hereof,
then this Letter Agreement shall prevail.

                                     Yours truly

                                     BOMBARDIER INC.


                                     __________________________________________
                                                 Walter Galloway
                                               Director, Contracts


                                     ACCEPTED AND AGREED TO:

                                     This _________ day of January, 1997


                                     MESA AIR GROUP, INC.


                                     By_________________________________________
                                       Title:___________________________________

                                       -3-


<PAGE>   37
                                 BOMBARDIER INC.
                               BOMBARDIER REGIONAL
                                AIRCRAFT DIVISION
                                Garratt Boulevard
                               Downsview, Ontario
                                 Canada M3K 1Y5
                            Telephone (416) 633-7310

Thu, Feb 13, 1997
Our Ref: B96-7701-RJTL-CRJ0351-002


Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman


         Re:                 Letter Agreement No. 002
                  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                  WITH THE SECURITIES AND EXCHANGE COMMISSION]



Gentlemen,


         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").


         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.


         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.
<PAGE>   38
SUBJECT: [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION]


          Section 1.0. In consideration of Buyer having entered into the above
referenced Agreement, and in addition to the provisions of Letter Agreement 001,
BRAD agrees to reserve sixteen (16) additional aircraft (the "Rolling Option
Aircraft") [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]


          Section 1.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.6. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]

[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]


          Section 1.7. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 1.8. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


               (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]


               (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
          SECURITIES AND EXCHANGE COMMISSION]




                                       -2-
<PAGE>   39
          Section 2.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 3.0. In the event of the termination of the Agreement, this
Letter Agreement shall become automatically null and void.


          Section 4.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


          Section 5.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


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

                                             Yours truly
                                             BOMBARDIER INC.


                                             ___________________________________
                                             Walter Galloway
                                             Director, Contracts

ACCEPTED AND AGREED TO:
this _____ day of January, 1997

MESA AIR GROUP, INC.

By:  _________________________________
Title: _______________________________



                                       -3-

<PAGE>   40
                                BOMBARDIER, INC.
                      BOMBARDIER REGIONAL AIRCRAFT DIVISION
                                Garratt Boulevard
                               Downsview, Ontario
                                 Canada M3K 1Y5
                            Telephone (416) 633-7310

Thu, Feb 13, 1997
Our Ref: B96-7701-RJTL-CRJ0351-003

Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401
Attention: Mr. Larry Risley, Chairman

         Re:                Letter Agreement No. 003
                     [CONFIDENTIAL PORTION DELETED AND FILED
             SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]


Gentlemen,

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

SUBJECT:       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
               SECURITIES AND EXCHANGE COMMISSION]

         Section 1.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]


<PAGE>   41
         Section 2.0. In the event of the termination of the Agreement, this
Letter Agreement shall become automatically null and void.

         Section 3.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]

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

                                                Yours truly
                                                BOMBARDIER INC.

                                                ________________________________
                                                Walter Galloway
                                                Director, Contracts

ACCEPTED AND AGREED TO:
this _____ day of January, 1997

MESA AIR GROUP, INC.

By:  _______________________________

Title: ______________________________


                                      -2-

<PAGE>   42
                                 BOMBARDIER INC.
                      BOMBARDIER REGIONAL AIRCRAFT DIVISION
                                Garratt Boulevard
                               Downsview, Ontario
                                 Canada M3K 1Y5


January 10, 1997
Our Ref: B96-7701-RJTL-CRJ0351-004


Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401
Attention: Mr. Larry Risley, Chairman

         Re: Letter Agreement No. 004 [CONFIDENTIAL PORTION DELETED AND FILED
         SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]



Gentlemen,

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement. In this Letter Agreement No. 004 the
term Aircraft shall apply to the thirty two (32) Canadair Regional Aircraft (16
Firm and 16 Option Aircraft).

SUBJECT:  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
           SECURITIES AND EXCHANGE COMMISSION]

         Section 1.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].


<PAGE>   43
         Section 2.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 3.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 4.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 5.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 6.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 7.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 8.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 9.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

         Section 10.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]:

                  (i)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION];

                  (ii)  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (iii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION].

         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]:

                  (i)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION];


                                      -2-
<PAGE>   44
                  (ii)  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION].

         Section 11.0. In the event of the termination of the Agreement, this
Letter Agreement shall become automatically null and void.

         Section 12.0. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION].

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

                                         Yours truly
                                         BOMBARDIER INC.

                                         ________________________________
                                         Walter Galloway
                                         Director, Contracts

ACCEPTED AND AGREED TO:
this ____ day of January, 1997

MESA AIR GROUP, INC.

By:    ________________________________

Title: ________________________________


                                      -3-

<PAGE>   45
February 13, 1997
Our Ref:  B96-7701-RJTL-CRJ0351-005





Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A.  87401
Attention:  Mr. Larry Risley, Chairman

       Re:                   Letter Agreement No. 005
               [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                  WITH THE SECURITIES AND EXCHANGE COMMISSION]

Gentlemen,

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

SUBJECT: [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
               SECURITIES AND EXCHANGE COMMISSION]

1.0      In consideration of Buyer having entered into the above referenced
         Agreement for the purchase of sixteen (16) Aircraft, and
         notwithstanding the provisions of Article 5.2 of the Agreement, payment
         for the Aircraft will be made, and Article 5.2 of the Agreement is
         amended to read, as follows:

         1.1.     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION]

                  a.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                           WITH THE SECURITIES AND EXCHANGE COMMISSION]


<PAGE>   46
                  b.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                           WITH THE SECURITIES AND EXCHANGE COMMISSION]

                  c.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                           WITH THE SECURITIES AND EXCHANGE COMMISSION]

                  d.       [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                           WITH THE SECURITIES AND EXCHANGE COMMISSION]

3.0      In the event of the termination of the Agreement, this Letter Agreement
         shall become automatically null and void, and the disposition of the
         Deposit per a.) above, and the Deposit per b.) above will be determined
         in accordance with the Agreement.

4.0      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION]

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

                                               Yours truly

                                               BOMBARDIER INC.

                                               ______________________________
                                               Walter Galloway
                                               Director, Contracts

ACCEPTED AND AGREED TO:
this _________ day of January, 1997

MESA AIR GROUP, INC.

By:____________________________________

Title:_________________________________


                                      -2-
<PAGE>   47
February 13, 1997
Our Ref:  B96-7701-RJTL-CRJ0351-006




Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A.  87401
Attention:  Mr. Larry Risley, Chairman


       Re:                   Letter Agreement No. 006
           [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION]


Gentlemen,

Reference is made to Purchase Agreement No. CRJ0351 (the "Agreement") between
Bombardier Inc., represented by its Bombardier Regional Aircraft Division
("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen (16)
Canadair Regional Jet Aircraft (the "Aircraft").

      This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

      All terms used herein and in the Agreement not defined herein, shall have
the same meaning as in the Agreement.

1.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      1.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      1.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

2.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      2.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION]:


<PAGE>   48

            2.1.1. The term of this Letter Agreement [CONFIDENTIAL PORTION
                   DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                   COMMISSION]

            2.1.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                   SECURITIES AND EXCHANGE COMMISSION]:

                  (a)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                        THE SECURITIES AND EXCHANGE COMMISSION];

                  (b)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                        THE SECURITIES AND EXCHANGE COMMISSION];

                  (c)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                        THE SECURITIES AND EXCHANGE COMMISSION]

                  (d)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                        THE SECURITIES AND EXCHANGE COMMISSION]

      2.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

3.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      3.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION]

      3.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION]:

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

4.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      4.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      4.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].


                                      -2-
<PAGE>   49
      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
            EXCHANGE COMMISSION].

      4.3.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION]:

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

5.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      5.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
                            AND EXCHANGE COMMISSION]

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      5.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      5.3.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

6.0   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

7.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

8.0.  Reporting.

      8.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      8.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].


                                      -3-
<PAGE>   50
9.0.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION].

      9.1.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      9.2.  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION].

      If the foregoing correctly sets forth your understanding of our agreement
with respect to the above matters, please indicate your acceptance and agreement
below.


                                             Yours truly

                                             BOMBARDIER INC.



                                             _________________________________
                                                Walter Galloway
                                                Director, Contracts


ACCEPTED AND AGREED TO:
this _________ day of January, 1997


MESA AIR GROUP, INC.


By:_____________________________________

Title:__________________________________


                                      -4-

<PAGE>   51







                                  APPENDIX "A"


[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].
<PAGE>   52
Thu, Feb 13, 1997
Our Ref: B96-7701-CRJ0351-RJTL-007


Mesa Air Group, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:


         Re: Letter Agreement No. 007  [CONFIDENTIAL PORTION DELETED AND FILED
               SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

         Reference is made to Purchase Agreement No. B96-7701-RJTL-CRJ0351 (the
"Agreement") between Bombardier, Inc., represented by its Bombardier Regional
Aircraft Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of
sixteen (16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms herein and in the Agreement and not defined herein shall have
the same meanings as in the Agreement.

Subject:  Delivery Deficiencies

         Section 1.0 Intent. The intent of this letter agreement is to provide
assurance to Buyer that BRAD [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION].

         Section 2.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

         Section 3.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

         BUYER AND BRAD STATE AND AGREE THAT THIS LETTER HAS BEEN THE SUBJECT OF
DISCUSSION AND NEGOTIATION AND IS FULLY UNDERSTOOD BY THE PARTIES HERETO AND
THAT THE PRICE OF THE AIRCRAFT AND THE OTHER MUTUAL AGREEMENTS OF THE PARTIES


<PAGE>   53
SET FORTH IN THE AGREEMENT WERE ARRIVED AT IN CONSIDERATION OF THE PROVISIONS
CONTAINED HEREIN.

         If the foregoing correctly sets forth your understanding of our
agreement with respect to the above matters, please indicate your acceptance and
agreement below.

                                          Yours truly
                                    

                                          BOMBARDIER, INC,.
                                    

                                          __________________________________
                                          Walter Galloway
                                          Director, Contracts
                             
Accepted and Agreed to:
this .____. day of January, 1997

MESA AIR GROUP, INC.

By:    ___________________________________
Title: ___________________________________
<PAGE>   54
                                      Date



Our Ref: B96-7701-CRJ0351-RJTL-008

Mesa Air Group, Inc.
2325 East 30th
Farmington, New Mexico
U.S.A.  87401

Attention: Mr. Larry Risley, Chairman

Gentlemen:


      Re:                    Letter Agreement No. 008
             [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                     THE SECURITIES AND EXCHANGE COMMISSION]

      Reference is made to Purchase Agreement No. B96-7701-RJTL-CRJ0351 (the
"Agreement") between Bombardier, Inc., represented by its Bombardier Regional
Aircraft Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of
sixteen (16) Canadair Regional Jet Aircraft (the "Aircraft").

      This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

      All terms herein and in the Agreement and not defined herein shall have
the same meanings as in the Agreement.

             [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                     THE SECURITIES AND EXCHANGE COMMISSION]

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

(A) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                 EXCHANGE COMMISSION]

      (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


<PAGE>   55

      (2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

(B)  DEFINITIONS

      (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (3) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (4) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]:

            (a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (e) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];


                                      -2-
<PAGE>   56
            (f) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (g) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (h) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (i) (A) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (B) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

            (j) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (k) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      (5) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      (6) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]:

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]:

                  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                        SECURITIES AND EXCHANGE COMMISSION];


                                      -3-
<PAGE>   57
             [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]

                  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                        SECURITIES AND EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      (7) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

(C) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                 EXCHANGE COMMISSION]

      (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]:

            (i) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

            (ii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

            (iii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

            (iv) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

            (v) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

      (2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

(D) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                 EXCHANGE COMMISSION]

      (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


                                      -4-
<PAGE>   58
      (2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (3) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (4) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (5) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (6) All reports [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION] shall be submitted by Buyer to the
attention of:

                        [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
                        THE SECURITIES AND EXCHANGE COMMISSION]
                        Bombardier Regional Aircraft Division
                        123 Garratt Boulevard
                        Downsview, Ontario
                        Canada M3K 1Y5
                        Tel:  (416) 633-7310

(E) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                 EXCHANGE COMMISSION]

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

(F)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION]

      (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]:

            (i) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

            (ii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

      (2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].


                                      -5-
<PAGE>   59
      (3) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

      (4) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION].

(G) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
                 EXCHANGE COMMISSION]

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

      If the foregoing correctly sets forth your understanding of our agreement
with respect to the above matters, please indicate your acceptance and agreement
below.

                                             Yours truly

                                             BOMBARDIER INC.




                                             _______________________________
                                             Walter Galloway
                                             Director, Contracts

ACCEPTED AND AGREED TO this _______ day
of January, 1997

MESA AIR GROUP, INC.


By:________________________________
   Title:____________________________


                                      -6-
<PAGE>   60
                                  ATTACHMENT A


[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]
<PAGE>   61
Thu, Feb 13, 1997
Our Ref: B96-7701-RJTL-CRJ0351-009


Mesa Air Group, Inc.,
2325 East 30th,
Farmington, New Mexico.
U.S.A. 87401

Attention: Mr. Larry Risley, Chairman

Gentlemen,



         Re: Letter Agreement No. 009 [CONFIDENTIAL PORTION DELETED AND FILED
            SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

         Reference is made to Purchase Agreement No. CRJ0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

         Subject: [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]

         Section 1.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

<PAGE>   62

         If the foregoing correctly sets forth your understanding of our
agreement with respect to the above matters, please indicate your acceptance and
agreement below.

                                             Yours truly

                                             BOMBARDIER INC.



                                             -----------------------------------
                                             Walter Galloway
                                             Director, Contracts

Accepted and Agreed to:
this         day of January, 1997
     -------

MESA AIR GROUP, INC.


By:
       ------------------------------------

Title:
       ------------------------------------
<PAGE>   63
Thu, Feb 13, 1997
Our Ref: B96-7701-RJTL-CRJ0351-010


Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401

Gentlemen,


         Re:              Letter Agreement No. 010
               [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
                  WITH THE SECURITIES AND EXCHANGE COMMISSION]

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

         Subject: [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]

         Section 1.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]

                  (i) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (ii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (iii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (iv) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

<PAGE>   64

                  (v) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (vi) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (vii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (viii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION]

         Section 2.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]

         Section 3.0 This Letter Agreement constitutes an integral part of the
Agreement and subject to the terms and conditions contained therein.

         Section 4.0 In the event of the termination of the Agreement, this
Letter Agreement shall become automatically null and void.

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


                                             Yours truly

                                             BOMBARDIER INC.


                                             -----------------------------------
                                             Walter Galloway
                                             Director, Contracts

ACCEPTED AND AGREED TO:
this _____ day of January, 1997

MESA AIR GROUP, INC.


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


                                      -2-
<PAGE>   65
                                 BOMBARDIER INC.
                      BOMBARDIER REGIONAL AIRCRAFT DIVISION
                                Garratt Boulevard
                               Downsview, Ontario
                                 Canada M3K 1Y5
                            Telephone (416) 633-7310


Thu, Feb 13, 1997
Our Ref: B96-7701-RJTL-CRJ0351-011



Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401


         Re:      Letter Agreement No. 011 (Re: Performance Guarantee)


Gentlemen,

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

SUBJECT:  PERFORMANCE GUARANTEE

         Section 1.0. Aircraft Configuration. The guarantees listed below are
based on the Aircraft configuration as defined in Canadair Customized Type
Specification RAD-601R-123 Issue NC, and equipped with GE CF34-3B1 engines as
defined in GE Engines Specification E1271A. The weight data corresponds to the
53000 lb (24040 kg) MTOW design weight option and includes the weight changes
associated with the centre-wing fuel tank. Appropriate adjustments shall be made
for changes in configuration approved by Buyer and BRAD or otherwise allowed by
the Purchase Agreement which cause changes to the performance of the Aircraft.


<PAGE>   66
         Section 2.0. Airport Conditions. All maximum take-off weight
calculations are based on the aircraft configuration and runway conditions
described below:

          --  Take-off with zero bleed, APU off
          --  APR armed
          --  Dry runway (no reverse thrust)
          --  Balanced field length when optimum
          --  Wind:    0 kts
          --  Clearway:    0 ft
          --  Stopway:    0 ft
          --  Flaps:  optimum 8 or 20 deg
          --  Line-up allowance: 82 ft
          --  Obstacles are defined from start of runway

         Airport: PHX , PHOENIX SKY HARB
         Runway: generic
         Slope: 0.000 %
         TORA: 11000 ft
         Elev.: 1133 ft
         Temper.: 110.1 deg F (43.40 degC)
         Obst.: none

         Airport: DSM , DES MOINES INTL
         Runway: generic
         Slope: 0.000 %
         TORA: 9000 ft
         Elev.:  957 ft
         Temper.: 90 degF (32.20 degC)
         Obst.: none

         Airport: FAT , FRESNO
         Runway: generic
         Slope: 0.000 %
         TORA: 9220 ft
         Elev.:  333 ft
         Temper.: 90 degF (32.20 degC)
         Obst.: none


                                      -2-
<PAGE>   67
         Airport: BHM , BIRMINGHAM MUNICIP.
         Runway: 23
         Slope: 0.200 % downhill
         TORA: 8229 ft
         Elev.:  644 ft
         Temper.: 90 degF (32.20 degC)
         Obst.:
         #                                       distance (ft)     height (ft)
         1                                                9219             -10
         2                                               13294              68
         3                                               15722             120

         Airport: BUF , GREATER BUFFALO INT.
         Runway: 23
         Slope: 0.400 % downhill
         TORA: 8100 ft
         Elev.:  724 ft
         Temper.: 90 degF (32.30 degC)
         Obst.:
         #                                       distance (ft)     height (ft)
         1                                                8576             -47
         2                                                8671             -36
         3                                                9275             -27
         4                                                9623              -2
         5                                               10351              -1
         6                                               10643               3
         7                                               11510              19

         Airport: BZN , GALLATIN FIELD
         Runway: 30
         Slope: 0.200 % downhill
         TORA: 9003 ft
         Elev.: 4474 ft
         Temper.: 90 degF (32.20 degC)
         Obst.:
         #                                       distance (ft)     height (ft)
         1                                               10295             -11
         2                                               78396             432
         3                                               95194             632


                                       -3-
<PAGE>   68
Airport: DAY , COX-DAYTON INTL
Runway: 06L
Slope: 0.000 %
TORA: 10900 ft
Elev.: 1009 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                     distance (ft)           height (ft)
1                                             12579                     1
2                                             12684                     2
3                                             14173                    68

Airport: DEN , DENVER INTL
Runway: 35L
Slope: 0.500 % downhill
TORA: 12000 ft
Elev.: 5431 ft
Temper.: 90 degF (32.20 degC)
Obst.: none

Airport: DRO , DURANGO
Runway: 20
Slope: 0.760 % downhill
TORA: 9200 ft
Elev.: 6685 ft
Temper.: 90 degF (32.30 degC)
Obst.:
#                                     distance (ft)           height (ft)
1                                              9505                   -61
2                                             24193                   -41
3                                             30318                   -16

Airport: EGE , EAGLE CO REGL
Runway: 07
Slope: 1.000 % uphill
TORA: 8000 ft
Elev.: 6535 ft
Temper.: 90 degF (32.30 degC)

Obst.:

#                                     distance (ft)           height (ft)
1                                             14961                   349
2                                             16982                   484
3                                             22461                   844
4                                             34416                   933
5                                             46044                  1045
6                                             49410                  1353


                                       -4-
<PAGE>   69
Airport: ELP , EL PASO
Runway: 22
Slope: 0.250 % downhill
TORA: 11011 ft
Elev.: 3956 ft
Temper.: 90 degF (32.30 degC)
Obst.: none

Airport: FAR , HECTOR INTL
Runway: 35
Slope: 0.000 %
TORA: 9545 ft
Elev.:  900 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                           distance (ft)           height (ft)
1                                                   10994                     2
2                                                   11142                    11
3                                                   11539                    12

Airport: GRR , KENT CO INTL
Runway: 26L
Slope: 0.000 %
TORA: 10000 ft
Elev.:  794 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                           distance (ft)           height (ft)
1                                                   34298                   120


Airport: GSO , PIEDMONT TRIAD INTL
Runway: 05
Slope: 0.200 % downhill
TORA: 10000 ft
Elev.:  926 ft
Temper.: 90 degF (32.30 degC)
Obst.:
#                                           distance (ft)           height (ft)
1                                                   10942                    -7



                                       -5-
<PAGE>   70
Airport: GTF , GREAT FALLS INT'L AP
Runway: 03
Slope: 0.100 % downhill
TORA: 10500 ft
Elev.: 3674 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                         distance (ft)           height (ft)
1                                                 34275                   445

Airport: HSV , HUNTSVILLE INT-JONES
Runway: 18L
Slope: 0.200 % downhill
TORA: 10000 ft
Elev.:  630 ft
Temper.: 90 degF (32.30 degC)
Obst.:
#                                         distance (ft)           height (ft)
1                                                 41916                   182
2                                                 81408                   432

Airport: JAN , JACKSON INTL
Runway: 15L
Slope: 0.500 % uphill
TORA: 8500 ft
Elev.:  346 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                         distance (ft)           height (ft)
1                                                 15433                   188

Airport: MSN , DANE CO REG'L/TRUAX
Runway: 36
Slope: 0.000 %
TORA: 9003 ft
Elev.:  862 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                         distance (ft)           height (ft)
1                                                  9603                     3
2                                                 10105                    11
3                                                 10210                    24
4                                                 10548                    42
5                                                 54574                   180



                                      -6-
<PAGE>   71
Airport: MSO , MISSOULA INTL
Runway: 11
Slope: 0.100 % uphill
TORA: 9500 ft
Elev.: 3201 ft
Temper.: 90 degF (32.30 degC)
Obst.:
#                                           distance (ft)           height (ft)
1                                                    9846                    10
2                                                    9902                    13
3                                                   48038                   313
4                                                   48937                   482
5                                                   69994                  1007

Airport: PNS , PENSACOLA REG'L APT
Runway: 17
Slope: 0.200 % downhill
TORA: 7000 ft
Elev.:  121 ft
Temper.: 90 degF (32.30 degC)
Obst.:
#                                           distance (ft)           height (ft)
1                                                    8100                   -11
2                                                    9000                   -10
3                                                   17116                    58

Airport: RDU , RALEIGH-DURHAM INTL
Runway: 05L
Slope: 0.400 % uphill
TORA: 10000 ft
Elev.:  436 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                           distance (ft)           height (ft)
1                                                   11473                    48
2                                                   12556                    81
3                                                   12848                    94



                                       -7-
<PAGE>   72
Airport: ROC , GREATER ROCHESTER
Runway: 22
Slope: 0.400 % downhill
TORA: 8000 ft
Elev.:  559 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                        distance (ft)           height (ft)
1                                                 9728                     9
2                                                11378                    42
3                                                12628                    57
4                                               141664                   427

Airport: SBN , MICHIANA REGL
Runway: 09R
Slope: 0.300 % downhill
TORA: 7100 ft
Elev.:  799 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                        distance (ft)           height (ft)
1                                                 9318                     2
2                                                46591                   277

Airport: SDF , STANDIFORD FIELD
Runway: 01
Slope: 0.300 % uphill
TORA: 10000 ft
Elev.:  496 ft
Temper.: 90 degF (32.20 degC)
Obst.:
#                                        distance (ft)           height (ft)
1                                                10800                    33
2                                                11162                    45
3                                                12454                    82
4                                                14554                   124
5                                                14826                   133
6                                                15213                   137
7                                                15988                   159
8                                                41598                   349


                                      -8-
<PAGE>   73
Airport: TYS , MCGHEE TYSON
Runway: 05L
Slope: 0.900 % uphill
TORA: 9005 ft
Elev.:  981 ft
Temper.: 90 degF (32.30 degC)
Obstacles
#                                                distance (ft)     height (ft)
1                                                        10358              72
2                                                        11798             101
3                                                        14423             126

Airport: ASE , PITKIN CO/SARDY
Runway: 33
Slope: 1.000 % downhill
TORA: 7000 ft
Elev.: 7815 ft
Temper. : 90 degF (32.20 degC)
Obst.:
#                                                distance (ft)     height (ft)
1                                                         7723             -24
2                                                         8750             421
3                                                         1950             602
4                                                        37047            1031
5                                                        56759            1747

SECTION 3.0 PERFORMANCE GUARANTEE

         Section 3.1. Take-off Performance. FAR take-off field length, at a
take-off gross weight of 53000 lb, at the start of ground run, at sea level with
zero runway slope, no obstacles, zero wind, ISA conditions, shall be not more
than 6315 feet.

         Section 3.2. Landing Performance. FAR landing field length, at a
landing weight of 47000 lb, sea level, ISA conditions, no obstacles, zero wind,
shall be not more than 4850 feet.

         Section 3.3. Speed. Level flight airspeed at 50350 lb gross weight
(equivalent to 95% of Maximum Take-off Weight), at a pressure altitude of 31000
feet, using maximum cruise thrust with A.C.U. bleed only, in ISA+15oC conditions
shall not be less than 0.74 M 448 KTAS).

                 Section 3.4. Specific Air Range. The nautical air miles per
pound of fuel in ISA+15oC conditions, at 31000 feet pressure altitude, at an
Aircraft gross weight of 50350 lb, at a true Mach number of 0.74 M shall be not
less than 0.162 nam/lb.


                                      -9-
<PAGE>   74
SECTION 3.5. MISSION PERFORMANCE

         Section 3.5.1. Maximum Range Guarantee. When operated under the
conditions specified below with the fixed quantities and allowances specified in
Article 3.5.3, the maximum still air range (stage length) shall be not less than
1375 nautical miles (1583 statute miles) when carrying a fixed payload of 11000
lb (50 passengers).

         Take-off is at a fixed weight of 53000 lb at brake release.

         The mission is flown in ISA+15oC conditions throughout.

         A fixed allowance of 181 lb of fuel is considered for 1.8 minutes
         take-off and acceleration time to 250 KCAS initial climb speed at 1500
         feet above sea level.

         Climb is made starting at 1500 feet to 31000 feet pressure altitude
         using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 31000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Step climb is made starting at 31000 feet to 33000 feet pressure
         altitude using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 33000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Descent is made from 33000 feet to 1500 feet pressure altitude using a
         descent speed schedule of 0.70 M / 250 KCAS.

SECTION 3.5.2. BLOCK FUEL GUARANTEES

         Section 3.5.2.1. Stage Length - 250 n.m. For a mission with an
equivalent still air range (stage length) of 250 nautical miles (288 statute
miles), when operated under the conditions specified below with the fixed
quantities and allowances specified in Article 3.5.3, the block fuel burnt shall
be not more than 2219 lb, based on a block time of 63 minutes, equivalent to an
average fuel consumption of 311 U.S. Gallon per block hour, when carrying a
fixed payload of 11000 lb (50 passengers).

         The mission is flown in ISA+15oC conditions throughout.

         A fixed allowance of 155 lb of fuel is considered for 1.5 minutes
         take-off and acceleration time to initial climb speed at 1500 feet
         above sea level.

         Climb is made starting at 1500 feet to 27000 feet pressure altitude
         using a climb speed schedule of 250 KCAS/ 0.70 M.


                                      -10-
<PAGE>   75
         Cruise is at 27000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Descent is made from 27000 feet to 1500 feet pressure altitude using a
         descent speed schedule of 0.70 M / 250 KCAS.

         Section 3.5.2.2. Stage Length - 500 n.m. For a mission with an
equivalent still air range (stage length) of 500 nautical miles (575 statute
miles), when operated under the conditions specified below with the fixed
quantities and allowances specified in Article 3.5.3, the block fuel burnt shall
be not more than 3526 lb, based on a block time of 99 minutes, equivalent to an
average fuel consumption of 314 U.S. Gallon per block hour, when carrying a
fixed payload of 11000 lb (50 passengers).

         The mission is flown in ISA+15oC conditions throughout.

         A fixed allowance of 160 lb of fuel is considered for 1.6 minutes
         take-off and acceleration time to initial climb speed at 1500 feet
         above sea level.

         Climb is made starting at 1500 feet to 35000 feet pressure altitude
         using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 35000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Descent is made from 35000 feet to 1500 feet pressure altitude using a
         descent speed schedule of 0.70 M / 250 KCAS.

         Section 3.5.2.3. Stage Length - 750 n.m. For a mission with an
equivalent still air range (stage length) of 750 nautical miles (863 statute
miles), when operated under the conditions specified below with the fixed
quantities and allowances specified in Article 3.5.3, the block fuel burnt shall
be not more than 4939 lb, based on a block time of 135 minutes, equivalent to an
average fuel consumption of 323 U.S. Gallon per block hour, when carrying a
fixed payload of 11000 lb (50 passengers).

         The mission is flown in ISA+15oC conditions throughout.

         A fixed allowance of 165 lb of fuel is considered for 1.6 minutes
         take-off and acceleration time to initial climb speed at 1500 feet
         above sea level.

         Climb is made starting at 1500 feet to 35000 feet pressure altitude
         using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 35000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.


                                      -11-
<PAGE>   76
         Descent is made from 35000 feet to 1500 feet pressure altitude using a
         descent speed schedule of 0.70 M / 250 KCAS.

         Section 3.5.2.4. Stage Length - 1000 n.m. For a mission with an
equivalent still air range (stage length) of 1000 nautical miles (1151 statute
miles), when operated under the conditions specified below with the fixed
quantities and allowances specified in Article 3.5.3, the block fuel burnt shall
be not more than 6399 lb, based on a block time of 169 minutes, equivalent to an
average fuel consumption of 334 U.S. Gallon per block hour, when carrying a
fixed payload of 11000 lb (50 passengers).

         The mission is flown in ISA+15oC conditions throughout.

         A fixed allowance of 171 lb of fuel is considered for 1.7 minutes
         take-off and acceleration time to initial climb speed at 1500 feet
         above sea level.

         Climb is made starting at 1500 feet to 33000 feet pressure altitude
         using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 33000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Step climb is made starting at 33000 feet to 35000 feet pressure
         altitude using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 35000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Descent is made from 35000 feet to 1500 feet pressure altitude using a
         descent speed schedule of 0.70 M / 250 KCAS.

         Section 3.5.2.5. Stage Length - 1250 n.m. For a mission with an
equivalent still air range (stage length) of 1250 nautical miles (1439 statute
miles), when operated under the conditions specified below with the fixed
quantities and allowances specified in Article 3.5.3, the block fuel burnt shall
be not more than 7905 lb, based on a block time of 204 minutes, equivalent to an
average fuel consumption of 342 U.S. Gallon per block hour, when carrying a
fixed payload of 11000 lb (50 passengers).

         The mission is flown in ISA+15oC conditions throughout.

         A fixed allowance of 177 lb of fuel is considered for 1.8 minutes
         take-off and acceleration time to initial climb speed at 1500 feet
         above sea level.

         Climb is made starting at 1500 feet to 33000 feet pressure altitude
         using a climb speed schedule of 250 KCAS/ 0.70 M.


                                      -12-

<PAGE>   77
         Cruise is at 33000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Step climb is made starting at 33000 feet to 35000 feet pressure
         altitude using a climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at 35000 feet pressure altitude at an average cruise Mach
         number of 0.74 M. Thrust during cruise is not to exceed maximum cruise
         thrust.

         Descent is made from 35000 feet to 1500 feet pressure altitude using a
         descent speed schedule of 0.70 M / 250 KCAS.

         Section 3.5.3. Fixed Quantities and Allowances for Maximum Range and
Block Fuel Guarantees. For the purpose of this guarantee the following are fixed
quantities and allowances:
 
          --  9 minutes engine start and taxi-out fuel                120 lb
          --  4.2 minutes approach and landing fuel from 1500         119 lb
                  feet pressure altitude to sea level

          --  6 minutes taxi-in fuel (taken from reserves)             80 lb
          --  Usable reserve fuel remaining upon completion          2286 lb
                  of landing phase, based on the reserve profile 
                  specified below:

                  (1) 100 nm diversion including:

                  climb from sea level to 19000 feet at a speed of 250 KCAS

                      (ii)     cruise at 19000 feet at long range cruise speed
                               (LRC)

                      (iii)    descent to sea level at a speed of 250 KCAS.

                  (2) plus fuel equivalent to 45 minutes hold at 10000 feet at
         long-range cruise speed (LRC).

         The stage length is defined as the sum of the climb, cruise and descent
         distances.

         M denotes true Mach number.

         Block fuel includes engine start, taxi, take-off, climb, cruise,
         descent, approach and landing.

         The maximum range and fuel burn guarantees given in Articles 3.5.1 and
         3.5.2 are based on the fixed estimated Operating Weight Empty (O.W.E.)
         of 31075 lb.


                                      -13-
<PAGE>   78
         Section 3.5.4. Maximum payload guarantees. Under the conditions
specified in 3.5.2 and with the fixed quantities and allowances specified in
3.5.3, the maximum number of passengers shall not be less than the value
presented in the table below for each mission.

<TABLE>
<CAPTION>
                                                                                           CRUISE
                                                 ROUTE       AVERAGE        EQUIV.        PRESSURE
                                                 DIST.        WINDS       STILL AIR       ALTITUDE
    CASE #         FROM            TO            (NM)         (KTS)          (NM)         (100 FT)       PASSENGERS        MAX.
    <S>            <C>            <C>           <C>          <C>          <C>             <C>            <C>               <C>  
      1             DRO           DEN            224           -13           232            330                             41
      2             DEN           DRO            283           -48           324            350                             50
      3             DEN           EGE            118           -50           137            240                             50
      4             EGE           DEN            130             4           128            270                              9
      5             DEN           BHM            999            29           931            370                             50
      6             BHM           DEN            967           -84           1218           350                             50
      7             DEN           BUF           1190            27           1114           370                             50
      8             BUF           DEN           1196           -79           1482           350              49
      9             DEN           BZN            589           -67           707            350              50
      10            BZN           DEN            508            10           494            370              50
      11            DEN           DAY            964            29           898            370              50
      12            DAY           DEN            964           -84           1212           350              50
      13            DEN           ELP            514           -33           561            350              50
      14            ELP           DEN            534           -28           576            370              50
      15            DEN           FAR            583           -13           603            370              50
      16            FAR           DEN            591           -45           667            350              50
      17            DEN           GRR            890            22           842            370              50
      18            GRR           DEN            897           -77           1105           350              50
      19            DEN           GSO           1240            35           1139           370              50
      20            GSO           DEN           1280           -89           1631           350              46
      21            DEN           GTF            552           -64           658            350              50
      22            GTF           DEN            553             8           540            370              50
      23            DEN           HSV            919            29           856            370              50
      24            HSV           DEN            928           -86           1174           350              50
      25            DEN           JAN            883            22           835            370              50
      26            JAN           DEN            872           -80           1084           350              50
      27            DEN           MSN            753            17           721            370              50
      28            MSN           DEN            753           -74           921            350              50
      29            DEN           MSO            616           -68           741            350              50
      30            MSO           DEN            625            13           604            370              50
      31            DEN           PNS           1129            24           1064           370              50
      32            PNS           DEN           1121           -80           1391           350              47
      33            DEN           RDU           1290            36           1183           370              50
      34            RDU           DEN           1327           -89           1691           350              45
      35            DEN           ROC           1236            27           1157           370              50
      36            ROC           DEN           1245           -80           1543           350              48
      37            DEN           SBN            852            24           803            370              50
</TABLE>


                                      -14-
<PAGE>   79
<TABLE>
<CAPTION>
                                                                                           CRUISE
                                                 ROUTE       AVERAGE        EQUIV.        PRESSURE
                                                 DIST.        WINDS       STILL AIR       ALTITUDE
    CASE #         FROM            TO            (NM)         (KTS)          (NM)         (100 FT)       PASSENGERS        MAX.
    <S>            <C>            <C>           <C>          <C>          <C>             <C>            <C>               <C>  
      38            SBN           DEN            857           -79           1064           350              50
      39            DEN           SDF            907            30           842            370              50
      40            SDF           DEN            935           -86           1183           350              50
      41            DEN           TYS           1023            32           946            370              50
      42            TYS           DEN           1046           -87           1329           350              50
      43            DEN           ASE            97            -41           109            220              50
      44            ASE           DEN            97              0           97            230              10
      45            PHX           BHM           1274            36           1168           370              50
      46            BHM           PHX           1306           -86           1652           350              45
      47            PHX           BUF           1669            26           1569         330/370            48
      48            BUF           PHX           1680           -76           2058           350              36
      49            PHX           BZN            999           -39           1107           370              50
      50            BZN           PHX            997           -17           1042         350/390            40
      51            PHX           DAY           1400            28           1308         330/370            50
      52            DAY           PHX           1408           -79           1745           350              43
      53            PHX           ELP            330            15           316            370              50
      54            ELP           PHX            311           -72           384            350              50
      55            PHX           FAR           1133           -7            1154           370              50
      56            FAR           PHX           1127           -45           1269           350              50
      57            PHX           GRR           1381            19           1317         330/370            50
      58            GRR           PHX           1387           -71           1677           350              45
      59            PHX           GSO           1676            37           1535         330/370            48
      60            GSO           PHX           1691           -88           2152         350/390            34
      61            PHX           GTF            862           -40           957            370              50
      62            GTF           PHX            860           -15           894            350              50
      63            PHX           HSV           1260            35           1158           370              50
      64            HSV           PHX           1285           -85           1623           350              46
      65            PHX           JAN           1172            34           1080           370              50
      66            JAN           PHX           1140           -84           1435           350              50
      67            PHX           MSN           1295            14           1249           370              50
      68            MSN           PHX           1295           -67           1548           350              48
      69            PHX           MSO            836           -46           945            350              50
      70            MSO           PHX            833           -9            853            370              50
      71            PHX           PNS           1351            36           1239           370              50
      72            PNS           PHX           1381           -85           1742           350              39
      73            PHX           RDU           1659            38           1516         330/370            49
      74            RDU           PHX           1736           -90           2218         350/390            31
      75            PHX           ROC           1720            26           1616         330/370            47
      76            ROC           PHX           1728           -76           2121         350/390            35
      77            PHX           SBN           1321            22           1252           370              50
      78            SBN           PHX           1332           -74           1625           350              39
      79            PHX           SDF           1343            30           1249           370              50
      80            SDF           PHX           1340           -82           1675           350              45
      81            PHX           TYS           1401            35           1287         30/370             50
      82            TYS           PHX           1426           -86           1801           350              42
      83            PHX           DRO            319           -6            324            370              50
</TABLE>


                                      -15-
<PAGE>   80
<TABLE>
<CAPTION>
                                                                                           CRUISE
                                                 ROUTE       AVERAGE        EQUIV.        PRESSURE
                                                 DIST.        WINDS       STILL AIR       ALTITUDE
    CASE #         FROM            TO            (NM)         (KTS)          (NM)         (100 FT)       PASSENGERS        MAX.
    <S>            <C>            <C>           <C>          <C>          <C>             <C>            <C>               <C>  
      84            DRO           PHX            310           -53           361            390              38
      85            PHX           EGE            530           -13           549            370              50
      86            EGE           PHX            466           -47           529            390               1
      87            PHX           DSM           1003            12           972            370              50
      88            DSM           PHX           1011           -67           1210           350              50
      89            PHX           FAT            484           -67           584            350              50
      90            FAT           PHX            467             9           456            370              50
      91            PHX           ASE            426           -11           439            370              50
      92            ASE           PHX            426           -49           487            390               2
</TABLE>

         Section 3.5.5. Mission description. The equivalent still air distance
is the actual route distance (range) corrected for the average winds. Head winds
are negative. 85% average winter winds (Boeing model) have been used.

         The maximum take-off weight for each departure airport is based on the
         conditions specified in paragraph 2.0 and is in compliance with FAR 25
         take-off requirements.

         The missions are flown in ISA conditions throughout.

         A fixed allowance of fuel dependent on take-off weight is considered
         for take-off and acceleration to initial climb speed at 1500 ft above
         the airport elevation.

         Climb is made starting 1500 ft above the airport elevation to the
         initial cruise pressure altitude specified in the table above using a
         climb speed schedule of 250 KCAS/ 0.70 M.

         Cruise is at the pressure altitude specified in the table at an average
         cruise Mach number of 0.74 M. Thrust during cruise is not to exceed
         maximum cruise thrust.

         When a second cruise pressure altitude is specified in the table, a
         4000 ft step climb from the first to the second pressure altitude is
         made using a climb speed schedule of 250 KCAS/ 0.70 M. It is followed
         by a cruise at the second pressure altitude at an average cruise Mach
         number of 0.74 M.

         Descent is made from the final cruise pressure altitude to 1500 ft
         above the runway elevation using a descent speed schedule of 0.70 M /
         250 KCAS.

         A fixed allowance of fuel dependent on landing weight is considered for
         approach and landing from final descent speed at 1500 ft above the
         airport elevation.

         Section 3.5.6. Fixed Quantities and Allowances for Payload Guarantees.
For the purpose of this guarantee the following are fixed quantities and
allowances:

          --  9 minutes engine start and taxi-out fuel               120 lb
          --  6 minutes taxi-in fuel (taken from reserves)            80 lb


                                      -16-
<PAGE>   81
          -- Usable reserve fuel remaining upon completion of landing phase,
          based on the reserve profile specified below:

                  (1)      100 nm diversion including:

                           (i)   climb from destination airport elevation to
                  optimum altitude at a speed of 250 KCAS

                           (ii)  cruise at optimum altitude at long range cruise
                  speed (LRC)

                           (iii) descent to sea level at a speed of 250 KCAS.

                  (2)      plus fuel equivalent to 45 minutes hold at 10000 feet
         at long-range cruise speed (LRC).

         The stage length is defined as the sum of the climb, cruise and descent
         distances.

         M denotes true Mach number.

         Block fuel includes engine start, taxi, take-off, climb, cruise,
         descent, approach and landing.

         The maximum payload guarantees given in 3.5.4 are based on the fixed
         estimated Operating Weight Empty (O.W.E.) of 31075 lb and on the
         passenger weight allowance of 220 lb.

SECTION 4.0 WEIGHTS

         Section 4.1. Maximum Zero Fuel Weight Guarantee. The Maximum Zero Fuel
Weight (M.Z.F.W.) shall not be less than 44000 lb.

         Section 4.2. Maximum Landing Weight Guarantee. The Maximum Landing
Weight (M.L.W.) shall not be less than 47000 lb.

         Section 4.3. Maximum Take-off Weight Guarantee. The Maximum Take-off
Weight (M.T.O.W.) shall not be less than 53000 lb.

SECTION 5.0. PERFORMANCE GUARANTEE CONDITIONS

         Section 5.1. All guaranteed performance data are based on the ICAO
International Standard Atmosphere (ISA) unless noted otherwise. Altitudes are
pressure altitudes.

         Section 5.2. Take-off and landing performance are based on the
requirements of FAR 25.


                                      -17-
<PAGE>   82
         Section 5.3. Take-off and landing performance guarantees are based on
operation from hard surfaced, level and dry runways with no wind, no obstacles
and no line-up allowance unless noted otherwise and with anti-skid and automatic
spoilers operative.

         Section 5.4. When establishing the take-off and second segment
performance, no air shall be bled from the engine(s) for cabin air conditioning
or anti-icing and APR shall be armed and available when one engine fails. The
APU shall be off.

         Section 5.5. Speed, specific air range, and the climb, cruise, and
descent portion of the mission guarantee include allowance for normal engine
bleed and power extraction. Normal engine bleed is defined as that bleed
required to maintain a cabin pressure altitude not exceeding 8000 feet at the
maximum operating altitude with an average cabin ventilation rate of not less
than 570 ft3 /min and a cabin temperature of 72F.

         Section 5.6. Normal power extraction assumes the use of electrical
services such as to require a power level of 24 Kilowatts, total, to be provided
with both engines operative and of 15 Kilowatts to be provided with one engine
inoperative.

         Section 5.7. Fuel density is assumed to be 6.8 pounds / US gallon. All
performance guarantees are based on the use of a fuel with a lower heating value
(LHV) of 18550 BTU / pound and on an Aircraft centre of gravity location of 25%
of the mean aerodynamic chord.

         Section 5.8. All guarantees are contingent upon engine acceptance test
performance acceptable to BRAD and are applicable to a new airframe - engine
combination only.

SECTION 6.0. GUARANTEE COMPLIANCE

         Section 6.1. Compliance with take-off and landing performance
guarantees shall be demonstrated by reference to the approved FAA Airplane
Flight Manual adjusted to reflect any differences due to change in certification
requirements or interpretation thereof.

         Section 6.2. Compliance with speed, specific air range and mission
performance guarantees shall be established by calculations based on three (3)
flight test measurements of specific air range at different altitude, weight and
speed combinations to be agreed by BRAD and Buyer. This compliance will be
obtained for Buyer's Aircraft and will be demonstrated by reference to the
Flight Planning and Cruise Control Manual adjusted to reflect flight test data
measurements.

         Section 6.3. A compliance report containing speed and specific air
range performance based on flight test data agreed in 6.2 will be furnished to
Buyer.

         Section 6.4. The Aircraft will be weighed as necessary prior to and
after the flight during which performance checks are conducted. The standard
production instrumentation or a special instrumentation system furnished by BRAD
will be used to 


                                      -18-
<PAGE>   83
measure speed and specific air range. A fuel sample will be collected prior to
flight to establish density and lower heating value (refer to 5.7).

         Section 6.5. If speed and the arithmetic average of three measures of
specific air range data is demonstrated to have achieved compliance with the
performance guarantees no further demonstration will be required.

         Section 6.6. Data derived from tests 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. In the event that changes are introduced to the Aircraft which
affect the performance guarantees contained herein, BRAD shall adjust the
compliance referred to in paragraph 6.3 above accordingly.

SECTION 7.0. REMEDIES

         Section 7.1. In the event a shortfall in the guarantees contained
herein, BRAD reserves the right to carry out additional flight test measurements
on a subsequent Aircraft, which may be specially instrumented for this purpose,
with the objective of identifying accurately the cause of the shortfall and to
develop corrective measures. Such measures shall be developed within a period of
twelve (12) months from discovery and identification of a shortfall (or such
other longer period as may be mutually agreed in view of the corrective measures
involved).

         Section 7.2.1. If, during the period commencing at delivery of the
First Aircraft and expiring five (5) years later, Buyer notifies BRAD in writing
that a failure to meet this performance guarantee has occurred, and submits a
claim for direct damages in an amount less [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

                  (i)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (ii)  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (iii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION]

                  (iv)  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

                  (v)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]


                                      -19-
<PAGE>   84
                  (vi)  [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

         Section 7.2.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]

                  (i)   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION]

         Section 7.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]

SECTION  8.0   [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
               SECURITIES AND EXCHANGE COMMISSION]


         SECTION 8.1. THE PERFORMANCE GUARANTEES PROVIDED IN THIS LETTER
AGREEMENT ALONG WITH THE AGREEMENT AND THE OTHER LETTER AGREEMENTS TO THE
AGREEMENT AND THE OBLIGATIONS AND LIABILITIES ON THE PART OF BRAD UNDER THE
AFORESAID GUARANTEES ARE [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION]

         SECTION 8.2. BUYER AND BRAD STATE AND AGREE THAT THIS LETTER HAS BEEN
THE SUBJECT OF DISCUSSION AND NEGOTIATION AND IS FULLY UNDERSTOOD BY THE PARTIES
HERETO AND THAT THE PRICE OF THE AIRCRAFT AND THE OTHER MUTUAL AGREEMENTS OF THE
PARTIES SET FORTH IN THE AGREEMENT WERE ARRIVED AT IN CONSIDERATION OF THE
PROVISIONS CONTAINED HEREIN.


                                      -20-
<PAGE>   85
         If the foregoing correctly sets forth your understanding of our
agreement with respect to the above matters, please indicate your acceptance and
agreement below.

                                           Yours truly
                                           BOMBARDIER INC.

                                           ________________________________
                                           Walter Galloway
                                           Director, Contracts

ACCEPTED AND AGREED TO:
this ____ day of January, 1997

MESA AIR GROUP, INC.

By:  _______________________________

Title: _____________________________


                                      -21-
<PAGE>   86
                         APPENDIX A: NOMINAL PERFORMANCE

For flight planning and economic studies purposes, BRAD believes that Nominal
Performance payload can be used. The Nominal Performance relates to performance
level published in the approved FAA Airplane Flight Manual and in the Flight
Planning and Cruise Control Manual applicable to the Customer aircraft.

These Nominal Performances are not guarantees and are not subject to guarantee
compliance specified in paragraph 6.0.

Considering the mission description specified above in 3.5.4 and the fixed
quantities specified above in 3.5.5, the Nominal maximum number of passengers
that can be carried for flight planning purposes is presented in the table below
for each route.

<TABLE>
<CAPTION>
                                                                        EQUIV.
                                                                        STILL         CRUISE 
                                           ROUTE        AVERAGE          AIR         PRESSURE
                                           DIST.         WINDS           DIST.       ALTITUDE             NOM.
   CASE #        FROM          TO          (NM)          (KTS)           (nm)        (100 ft)          PASSENGERS         MAX.
   <S>           <C>          <C>          <C>          <C>             <C>          <C>               <C>                <C>
     1           DRO          DEN          224            -13            232            330                                41
     2           DEN          DRO          283            -48            324            350                50
     3           DEN          EGE          118            -54            139            260                50
     4           EGE          DEN          130             4             128            270                9
     5           DEN          BHM          999             29            931            370                50
     6           BHM          DEN          967            -84            1218           350                50
     7           DEN          BUF          1190            27            1114           370                50
     8           BUF          DEN          1196           -79            1482           350                50
     9           DEN          BZN          589            -67            707            350                50
     10          BZN          DEN          508             10            494            370                50
     11          DEN          DAY          964             29            898            370                50
     12          DAY          DEN          964            -84            1212           350                50
     13          DEN          ELP          514            -33            561            350                50
     14          ELP          DEN          534            -28            576            370                50
     15          DEN          FAR          583            -13            603            370                50
     16          FAR          DEN          591            -45            667            350                50
     17          DEN          GRR          890             22            842            370                50
     18          GRR          DEN          897            -77            1105           350                50
     19          DEN          GSO          1240            35            1139           370                50
     20          GSO          DEN          1280           -89            1631           350                47
     21          DEN          GTF          552            -64            658            350                50
     22          GTF          DEN          553             8             540            370                50
     23          DEN          HSV          919             29            856            370                50
     24          HSV          DEN          928            -86            1174           350                50
     25          DEN          JAN          883             22            835            370                50
     26          JAN          DEN          872            -80            1084           350                50
</TABLE>


<PAGE>   87
<TABLE>
<CAPTION>
                                                                        EQUIV.
                                                                        STILL         CRUISE 
                                           ROUTE        AVERAGE          AIR         PRESSURE
                                           DIST.         WINDS           DIST.       ALTITUDE             NOM.
   CASE #        FROM          TO          (NM)          (KTS)           (nm)        (100 ft)          PASSENGERS         MAX.
   <S>           <C>          <C>          <C>          <C>             <C>          <C>               <C>                <C>
     27          DEN          MSN          753             17            721            370                50
     28          MSN          DEN          753            -74            921            350                50
     29          DEN          MSO          616            -68            741            350                50
     30          MSO          DEN          625             13            604            370                50
     31          DEN          PNS          1129            24            1064           370                50
     32          PNS          DEN          1121           -80            1391           350                48
     33          DEN          RDU          1290            36            1183           370                50
     34          RDU          DEN          1327           -89            1691           350                46
     35          DEN          ROC          1236            27            1157           370                50
     36          ROC          DEN          1245           -80            1543           350                49
     37          DEN          SBN          852             24            803            370                50
     38          SBN          DEN          857            -79            1064           350                50
     39          DEN          SDF          907             30            842            370                50
     40          SDF          DEN          935            -86            1183           350                50
     41          DEN          TYS          1023            32            946            370                50
     42          TYS          DEN          1046           -87            1329           350                50
     43          DEN          ASE           97            -41            109            220                50
     44          ASE          DEN           97             0              97            230                10
     45          PHX          BHM          1274            36            1169           370                50
     46          BHM          PHX          1306           -86            1652           350                46
     47          PHX          BUF          1669            26            1569         330/370              49
     48          BUF          PHX          1680           -76            2058           350                37
     49          PHX          BZN          999            -40            1108           370                50
     50          BZN          PHX          997            -17            1042         350/390              41
     51          PHX          DAY          1400            28            1307           370                50
     52          DAY          PHX          1408           -79            1745           350                44
     53          PHX          ELP          330             15            316            370                50
     54          ELP          PHX          311            -72            384            350                50
     55          PHX          FAR          1133            -7            1154           370                50
     56          FAR          PHX          1127           -45            1269           350                50
     57          PHX          GRR          1381            19            1317         330/370              50
     58          GRR          PHX          1387           -71            1677           350                46
     59          PHX          GSO          1676            37            1535         330/370              49
     60          GSO          PHX          1691           -87            2143           350                35
     61          PHX          GTF          862            -40            957            370                50
     62          GTF          PHX          860            -15            894            350                50
     63          PHX          HSV          1260            35            1158           370                50
     64          HSV          PHX          1285           -85            1623           350                47
     65          PHX          JAN          1172            34            1080           370                50
     66          JAN          PHX          1140           -84            1435           350                50
     67          PHX          MSN          1295            14            1249           370                50
     68          MSN          PHX          1295           -67            1548           350                49
     69          PHX          MSO          836            -46            945            350                50
     70          MSO          PHX          833             -9            853            370                50
     71          PHX          PNS          1351            36            1239           370                50
     72          PNS          PHX          1381           -85            1742           350                40
</TABLE>


                                      A-2
<PAGE>   88
<TABLE>
<CAPTION>
                                                                        EQUIV.
                                                                        STILL         CRUISE 
                                           ROUTE        AVERAGE          AIR         PRESSURE
                                           DIST.         WINDS           DIST.       ALTITUDE             NOM.
   CASE #        FROM          TO          (NM)          (KTS)           (nm)        (100 ft)          PASSENGERS         MAX.
   <S>           <C>          <C>          <C>          <C>             <C>          <C>               <C>                <C>
     73          PHX          RDU          1659            38            1516         330/370              50
     74          RDU          PHX          1736           -89            2213         350/390              35
     75          PHX          ROC          1720            26            1617         330/370              48
     76          ROC          PHX          1728           -76            2117           350                36
     77          PHX          SBN          1321            22            1252           370                50
     78          SBN          PHX          1332           -74            1625           350                40
     79          PHX          SDF          1343            30            1249           370                50
     80          SDF          PHX          1340           -82            1675           350                46
     81          PHX          TYS          1401            35            1287           370                50
     82          TYS          PHX          1426           -86            1801           350                43
     83          PHX          DRO          319             -6            324            370                50
     84          DRO          PHX          310            -53            361            390                38
     85          PHX          EGE          530            -13            549            370                50
     86          EGE          PHX          466            -47            529            390                2
     87          PHX          DSM          1003            12            972            370                50
     88          DSM          PHX          1011           -67            1210           350                50
     89          PHX          FAT          484            -67            584            350                50
     90          FAT          PHX          467             9             456            370                50
     91          PHX          ASE          426            -11            439            370                50
     92          ASE          PHX          426            -49            487            390                3
</TABLE>


                                      A-3



<PAGE>   89
Thu, Feb 13, 1997
Our Ref: B96-7701-RJTL-CRJ0351-012


Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401

Gentlemen,


         Re: Letter Agreement No. 012 [CONFIDENTIAL PORTION DELETED AND FILED
            SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

         Subject: [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]

         Section 1.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

         Section 2.0 [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

         Section 3.0 This Letter Agreement constitutes an integral part of the
Agreement and subject to the terms and conditions contained therein.

         Section 4.0 In the event of the termination of the Agreement, this
Letter Agreement shall become automatically null and void.

<PAGE>   90

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

                                        Yours truly

                                        BOMBARDIER INC.


                                        ----------------------------------------
                                        Walter Galloway
                                        Director, Contracts

ACCEPTED AND AGREED TO:
this       day of January, 1997
     -----

MESA AIR GROUP, INC.

By:
       ------------------------------------

Title:
       ------------------------------------

                                      -2-
<PAGE>   91
                               Wed, Feb. 12, 1997


Our Ref: B96-7701-RJTL-CRJ0351-013

Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U. S.A. 87401

Gentlemen,


         Re:      Letter Agreement No. 013 ([CONFIDENTIAL PORTION DELETED AND
         FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

SUBJECT: [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
                            AND EXCHANGE COMMISSION]

         1.0      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

         2.0      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

         3.0      This Letter Agreement constitutes an integral part of the
Agreement and subject to the terms and conditions contained therein.

         4.0      In the event of the termination of the Agreement, this Letter
Agreement shall become automatically null and void.

<PAGE>   92

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

                                             Yours truly

                                             BOMBARDIER INC.



                                             -----------------------------------
                                             Walter Galloway
                                             Director, Contracts

Accepted and Agreed to:
this        day of January, 1997
     ------

MESA AIR GROUP, INC.


By
  ---------------------------------
Title
  ---------------------------------


                                      -2-
<PAGE>   93
                                February 12, 1997


Our Ref: B96-7701-RJTL-CRJ0351-014
Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401
Attention: Mr. Larry Risley, Chairman

Gentlemen,


      Re:                    Letter Agreement No. 014
            (Re: Customer Support, Warranty, and Service Life Policy)


      Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

      This letter, when accepted and agreed to by Buyer contemporaneously with
execution of the Agreement, will become part of the Agreement and will evidence
our further agreement with respect to the matters set forth below.

      All terms used herein and in the Agreement not defined herein, shall have
the same meaning as in the Agreement.

CUSTOMER SUPPORT SERVICES AND WARRANTY

      The following Customer Support Services and Warranty are those services to
which reference is made in Article 3 of the Agreement.

CUSTOMER SUPPORT SERVICES

                                    ARTICLE 1
                                TECHNICAL SUPPORT

     Section 1.1. Factory Service. BRAD agrees to maintain or cause to be
maintained the capability to respond to Buyer's technical inquiries, to conduct
investigations concerning repetitive maintenance problems and to issue findings
and recommend action thereon. This service shall be provided for as long as
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] aircraft remain in commercial air transport service.
<PAGE>   94
     Section 1.2.   Field Service Representative.

   Section 1.2.1. Services. BRAD shall assign [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] to Buyer's main
base of operation or other location as may be mutually agreed.

   Section 1.2.2. Term. Such assignment shall commence approximately one (1)
month prior to the Delivery Date of the first Aircraft and conclude one year
after delivery of the last Firm Aircraft. The FSR assignment may be extended on
terms and conditions to be mutually agreed.

  Section 1.2..3 Responsibility. The FSR's responsibility shall be to provide
technical advice to Buyer for the line maintenance and operation of the Aircraft
systems and troubleshooting during scheduled and unscheduled maintenance by
Buyer's designated personnel ("FSR Services").

   Section 1.2.4. Travel. If requested by Buyer, the FSR may, at Buyer's
expense, travel to another location to provide technical advice to Buyer.

   Section 1.2.5. Office Facilities. Buyer shall furnish the FSR, at no charge
to BRAD, suitable and private office facilities and related equipment including
desk, file cabinet, access to two telephone lines, facsimile and photocopy
equipment conveniently located at Buyer's main base of operation or other
location as may be mutually agreed.

   Section 1.2.6. Additional Expenses. Buyer shall reimburse BRAD (net of any
additional taxes on such reimbursement) the amount of any and all taxes (except
Canadian taxes on the income of the FSR) and fees of whatever nature, including
any customs duties, withholding taxes or fees together with any penalties or
interest thereon, paid or incurred by BRAD or the FSR or other BRAD employee as
a result of or in connection with the rendering of the services.

   Section 1.2.7. Right to Stop Work. BRAD shall not be required to commence or
continue the FSR Services when:

            a.) there is a [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
      WITH THE SECURITIES AND EXCHANGE COMMISSION];

            b.) there exist war, risk of war or warlike operations, riots or
      insurrections;

            c.) there exist [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
      WITH THE SECURITIES AND EXCHANGE COMMISSION] the FSR or other BRAD
      employee; or

            d.) the Government of the country where Buyer's facilities are
      located or where Buyer desires the FSR to travel refuses the BRAD employee
      permission to enter said country or Buyer's base of operations.
<PAGE>   95
   Section 1.2.8. Work Permits and Clearances. Buyer shall arrange for all
necessary work permits and airport security clearances required for the FSR or
other BRAD employee to permit timely accomplishment of the FSR services.

     Section 1.3.   Maintenance Planning Support.

   Section 1.3.1. Scheduled Maintenance Task Cards. As described in Annex A
Attachment A, BRAD shall provide Buyer BRAD's standard format scheduled
maintenance task cards that shall conform to the Aircraft at the Delivery Date.
At Buyer's request BRAD shall provide a proposal for task cards produced to
Buyer's format.

   Section 1.3.2. In-Service Maintenance Data. Buyer agrees to provide to BRAD
in-service maintenance data in order to provide updates to BRAD's recommended
maintenance program. Buyer and BRAD shall agree on standards and frequency for
communication of such data.

     Section 1.4. Additional Services. At Buyer's request BRAD shall provide a
proposal to provide such additional support services as the parties may agree
upon, which may include special investigations, maintenance and repair of the
Aircraft.

                                   ARTICLE 2.
                   SPARE PARTS, GSE, TOOLS AND TEST EQUIPMENT

   Section 2.1.1.   Definitions.

       a. "BRAD Parts": any spare parts, ground support equipment, tools and
test equipment which bear an inhouse Cage Code number in the BRAD Provisioning
Files (as that expression is defined in ATA Specification 2000).

       b. "Power Plant Parts": any power plant or power plant part or assembly
carrying the power plant manufacturer's part number or any part furnished by the
power plant manufacturer for incorporation on the Aircraft.

       c. "Vendor Parts": any spare parts, ground support equipment, tools and
test equipment for the Aircraft which are not BRAD Parts or Power Plant Parts.

       d. "Spare Parts": all materials, spare parts, assemblies, special tools
and items of equipment, including ground support equipment, ordered for the
Aircraft by Buyer from BRAD. The term Spare Parts includes BRAD Parts, Power
Plant Part and Vendor Parts.

       e. "Order": any order for Spare Parts issued by Buyer to BRAD; and

       f. "Technical Data": shall have the meaning attributed to it in Annex A
Article 4.1.
<PAGE>   96
     Section 2.1. Term and Applicability. The term of this Annex A Article 2
shall become effective on the date hereof and shall remain in full force and
effect with respect to the purchase and sale of Spare Parts for each Aircraft so
long as at least [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION] remain in commercial air transport service.
The provisions of Annex A Articles 2.2, 2.6.5, 2.24 and Annex B Article 5.0
shall survive expiration or termination of this Agreement.

     Section 2.2. Order Terms. Terms and conditions hereof shall apply to all
Orders placed by Buyer with BRAD in lieu of any terms and conditions in Buyer's
purchase orders.

     Section 2.3.   Purchase and Sale of Spare Parts.

   Section 2.3.1. Agreement to Manufacture and Sell. BRAD shall manufacture, or
procure, and make available for sale to Buyer suitable Spare Parts in quantities
sufficient to meet the reasonably anticipated needs of Buyer for normal
maintenance and normal spares inventory replacement for each Aircraft. During
the term specified in Annex A Article 2.1 above, BRAD shall also maintain a
shelf stock of certain BRAD Parts selected by BRAD to ensure reasonable re-order
lead times and emergency support. BRAD shall maintain a reasonable quantity of
BRAD insurance parts. Insurance parts as used herein shall include, but not be
limited to, dispatch-essential parts such as major flight control surfaces.

     Section 2.4.   Agreement to Purchase BRAD Parts.

   Section 2.4.1. Purchase of BRAD Parts. In consideration of BRAD's obligation
under Annex A Article 2.3.1, during the term stated in Annex A Article 2.1.,
Buyer agrees to purchase BRAD Parts [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]:

             a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

             b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

   Section 2.4.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

   Section 2.4.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

     Section 2.5. Purchase of Vendor Parts & Power Plant Parts. BRAD shall not
be obligated to maintain a stock of Vendor Parts or Power Plant Parts. BRAD may
elect to
<PAGE>   97
maintain a spares stock of selected Vendor Parts at its own discretion to
support provisioning and replenishment sales. BRAD agrees to use reasonable
efforts to require its vendors to comply with the terms and conditions of this
Annex A Article 2 as they apply to Vendor Parts. Vendor Parts shall be delivered
in accordance with the vendor's quoted lead time plus BRAD's internal processing
time.

     Section 2.6.   Spare Parts Pricing.

   Section 2.6.1. Spare Parts Price Catalogue. Prices for commonly used BRAD
Parts stocked by BRAD shall be published in the spare parts price catalogue
("Spare Parts Price Catalogue"). BRAD shall hold the [CONFIDENTIAL PORTION
DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].

   Section 2.6.2. BRAD prices for Vendor Parts. If Buyer orders Vendor Parts
from BRAD, the price shall be as published in the Spare Parts Price Catalogue.

   Section 2.6.3. Quotations. Price and delivery quotations for items not
included in the Spare Parts Price Catalogue shall be provided at Buyer's request
by BRAD. Price quotations will be held firm for a period of ninety (90) calendar
days or as otherwise specified by BRAD. Responses to quotation requests will be
provided within ten (10) calendar days.

   Section 2.6.4. Price Applicability. The purchase price of BRAD Parts shall be
the applicable price set forth in the Spare Parts Price Catalogue at time of
receipt by BRAD of Buyer's Order or as quoted by BRAD to Buyer upon request. If
Buyer requests accelerated delivery or special handling for BRAD Parts not
included in the Spare Parts Price Catalogue, BRAD may increase the price from
the original quotation to cover any additional costs to BRAD.

   Section 2.6.5. Currency and Taxes. All Spare Parts Price Catalogue and
quotation prices shall be in U.S. dollars and exclusive of transportation,
taxes, duties and licenses.

      Buyer shall pay to BRAD upon demand the amount of any sales, use,
value-added, excise or similar taxes imposed by any federal, provincial or local
taxing authority within Canada, and the amount of all taxes imposed by any
taxing authority outside Canada, required to be paid by BRAD as a result of any
sale, use, delivery, storage or transfer of any Spare Parts. If BRAD has reason
to believe that any such tax is applicable, BRAD shall separately state the
amount of such tax in its invoice. If a claim is made against BRAD for any such
tax, BRAD shall promptly notify Buyer.

      In addition, Buyer shall pay to BRAD on demand the amount of any customs
duties required to be paid by BRAD with respect to the importation by Buyer of
any Spare Parts.

   Section 2.6.6. Vendor Pricing. BRAD shall use reasonable efforts to require
its major vendors to maintain any published price for their parts for a period
of at least [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND
<PAGE>   98
EXCHANGE Commission] a ninety (90) calendar day notice period prior to changing
a published price.

     Section 2.7.   Provisioning.

   Section 2.7.1. Pre-provisioning/Provisioning Conference. Pre-provisioning and
provisioning conferences shall be convened on dates to be mutually agreed
between Buyer and BRAD in order to:

            (i) discuss the operational parameters to be provided by Buyer to
      BRAD which BRAD considers necessary for preparing its quantity
      recommendations for initial provisioning of Spare Parts to be purchased
      from BRAD or vendors ("Provisioning Items");

           (ii) review Buyer's ground support equipment and special tool
      requirements for the Aircraft;

          (iii) discuss the format of the provisioning documentation to be
      provided to Buyer from BRAD for the selection of Provisioning Items; and

           (iv) arrive at a schedule of events for the initial provisioning
      process, including the establishment of a date for the initial
      provisioning conference ("Initial Provisioning Conference") which shall be
      scheduled where possible at least twelve (12) months prior to delivery of
      the first Aircraft.

      The time and location of the pre-provisioning conference shall be mutually
agreed upon between the parties; however, BRAD and Buyer shall use their best
efforts to convene such meeting within thirty (30) days after execution of the
Agreement.

     Section 2.8. Initial Provisioning Documentation. Initial provisioning
documentation for BRAD Parts and Vendor Parts shall be provided by BRAD as
follows:

             a) BRAD shall provide, as applicable to Buyer, no later than
      eighteen (18) months prior to the Scheduled Delivery Date of the first
      Aircraft, or as may be mutually agreed, the initial issue of provisioning
      files as required by ATA Specification 2000, Chapter 1 (as may be amended
      by BRAD);

            Revisions to this provisioning data shall be issued by BRAD every
      ninety (90) calendar days until ninety (90) calendar days following the
      Delivery Date of the last Aircraft or as may be mutually agreed;

             b) BRAD shall provide, as required by Buyer, all data files defined
      in Chapter 1 of ATA Specification 2000; and
<PAGE>   99
             c) the Illustrated Parts Catalogue designed to support provisioning
      shall be issued concurrently with provisioning data files and revised at
      ninety (90) calendar day intervals.

   Section 2.8.1. Obligation to Substitute Obsolete Spare Parts. In the event
that, prior to delivery of the first Aircraft, any Spare Part purchased by Buyer
from BRAD is rendered obsolete or unusable due to the redesign of the Aircraft
or of any accessory, equipment or part thereto (other than a redesign at Buyer's
request), BRAD shall deliver to Buyer new and usable Spare Parts in substitution
for such obsolete or unusable Spare Parts upon return of such Spare Parts to
BRAD by Buyer. BRAD shall credit Buyer's account with BRAD with the price paid
by Buyer for any such obsolete or unusable Spare Part and shall invoice Buyer
for the purchase price of any such substitute Spare Part delivered to Buyer.

   Section 2.8.2. Delivery of Obsolete Spare Parts and Substitutes. Obsolete or
unusable Spare Parts returned by Buyer pursuant to Annex A Article 2.8.1. shall
be delivered to BRAD at its plant in Ontario or Quebec, or such other
destination as BRAD may reasonably designate. Spare Parts substituted for such
returned obsolete or unusable Spare Parts shall be delivered to Buyer from
BRAD's plant in Ontario or Quebec, or such other BRAD shipping point as BRAD may
reasonably designate. BRAD shall pay the freight charges for the shipment from
Buyer to BRAD of any such obsolete or unusable Spare Part and for the shipment
from BRAD to Buyer of any such substitute Spare Part.

   Section 2.8.3. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

   Section 2.8.4. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

   Section 2.8.5. Notification and Format. Buyer shall notify BRAD, in writing,
when Buyer desires to return Provisioning Items which Buyer's review indicates
are eligible for repurchase by BRAD under the provisions of Annex A Article
2.8.3. Buyer's notification shall include a detailed summary, in part number
sequence, of the Provisioning Items Buyer desires to return. Such summary shall
be in the form of listings as may be mutually agreed between BRAD and Buyer, and
shall include part number, nomenclature, purchase order number, purchase order
date and quantity to be returned.

      Within five (5) business days after receipt of Buyer's notification BRAD
shall advise Buyer, in writing, when BRAD's review of such summary from Buyer
will be completed.

   Section 2.8.6. Review and Acceptance by BRAD. Upon completion of BRAD's
review of any detailed summary submitted by Buyer pursuant to Annex A Article
2.8.5., BRAD shall issue to Buyer a Material Return Authorization notice ("MRA")
for those Provisioning Items BRAD agrees are eligible for repurchase in
accordance with Annex A Article 2.8.3. BRAD will advise Buyer of the reason that
any Provisioning Items included in Buyer's detailed summary are not eligible for
return. The MRA notice shall state the date by which
<PAGE>   100
Provisioning Items listed in the MRA notice must be redelivered to BRAD and
Buyer shall arrange for shipment of such Provisioning Items accordingly.

   Section 2.8.7. Price and Payment. The price of each Provisioning Item
repurchased by BRAD pursuant to Annex A Article 2.8.6 will be the original
invoice price thereof. BRAD shall pay the repurchase price by issuing a credit
memorandum in favour of Buyer which may be applied against amounts due BRAD for
the purchase of Spare Parts and services.

   Section 2.8.8. Return of Surplus Provisioning Items. Provisioning Items
repurchased by BRAD pursuant to Annex A Article 2.8.6 shall be delivered to BRAD
Free Carrier (Incoterms), at its plant in Ontario or Quebec, or other such
destination as BRAD may reasonably designate.

   Section 2.8.9. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

     Section 2.9. Procedure for Ordering Spare Parts. Orders for Spare Parts may
be placed by Buyer to BRAD by any method of order placement (including but not
limited to SITA, ARINC, telecopier, letter, telex, facsimile, telephone or hard
copy purchase order).

   Section 2.9.1. Requirements. Orders shall include at a minimum order number,
part number, nomenclature, quantity, delivery schedule requested, shipping
instructions and BRAD's price, if available. Buyer agrees that orders placed
with BRAD shall conform to the requirements and procedures contained in ATA
Specification 2000, as applicable to Buyer.

   Section 2.9.2. Processing of Orders. Upon acceptance of any Order, unless
otherwise directed by Buyer, BRAD shall, if the Spare Parts are in stock,
proceed immediately to prepare the Spare Parts for shipment to Buyer. If BRAD
does not have the Spare Parts in stock, BRAD shall proceed immediately to
acquire or manufacture the Spare Parts. Purchase order status and actions
related to the shipment of Spare Parts shall be generally consistent with the
provisions of the World Airline Suppliers Guide and the applicable portions of
ATA Specification 2000, as applicable to Buyer.

   Section 2.9.3, Changes. BRAD reserves the right, without Buyer's consent, to
make any necessary corrections or changes in the design, part number and
nomenclature of Spare Parts covered by an Order, to substitute Spare Parts and
to adjust prices accordingly, provided that interchangeability is not affected
and the unit price is not increased by more than 10% or $50.00, whichever is
less. BRAD shall promptly give Buyer written notice of corrections, changes,
substitutions and consequent price adjustments. Corrections, changes,
substitutions and price adjustments which affect interchangeability or exceed
the price limitations set forth above may be made only with Buyer's consent,
which consent shall
<PAGE>   101
conclusively be deemed to have been given unless Buyer gives BRAD written notice
of objection within fifteen (15) business days after receipt of BRAD's notice.
In case of any objection, the affected Spare Part will be deemed to be deleted
from Buyer's Order.

   Section 2.9.4.   Electronic Data Interchange.

 Section 2.9.4.1. Use of Electronic Data Interchange (EDI). The SPEC 2000
Protocol shall be used for any EDI transaction.

      Buyer and BRAD shall implement security procedures to ensure proper use of
this communication. A message will be considered received only at the point
where it is in a format which can be accepted by the receiving computer
according to ATA SPEC 2000 rules on transmissions. If garbled transmissions are
received, the receiver shall promptly notify the sender through use of the
S1REJECT command.

 Section 2.9.4.2. Acceptance of EDI Transactions. The SIBOOKED transaction
creates an obligation on the part of Buyer to purchase the material and
quantities as specified in the transmission. BRAD is obliged to sell the
material and quantities as specified except as may be identified in a subsequent
SIORDEXC message. With respect to a S1QUOTES transaction, Buyer and BRAD are
bound to respect the prices quoted in the transmission in any resultant S1BOOKED
order transaction based upon that S1QUOTES message within the validity period of
the S1QUOTES message. An S1NVOICE message will be considered as the official
commercial invoice for the goods shipped. An S1STOCKS, S1SHIPPD, S1POSTAT or
S1PNSTAT message creates no obligations on either the Buyer or BRAD.

      If an S1BOOKED acknowledgment is not sent within 24 hours by BRAD then
Buyer shall resend the original message.

      Any document which has been properly received shall not give rise to any
obligation unless and until the party receiving such document has properly
transmitted in return an acknowledgment document according to SPEC 2000
Protocol.

 Section 2.9.4.3. Systems Operations. Buyer and BRAD, at their own expense,
shall provide and maintain the equipment, software, services and testing
necessary to effectively and reliably transmit and receive documents.

 Section 2.9.4.4. Validity of Documents. Annex A Article 2.9.4 has been agreed
to by Buyer and BRAD to evidence their mutual intent to create binding purchase
and sale obligations pursuant to the electronic transmission and receipt of
documents as described herein.

      Such documents properly transmitted pursuant to this Annex A Article 2.9.4
shall be considered, in connection with any transaction or any other agreement,
to be a "writing" or "in writing" and shall be deemed for all purposes (a) to
have been "signed" and (b) to constitute an "original" when printed from
electronic files or records established and maintained in the normal course of
business.
<PAGE>   102
      Buyer and BRAD agree not to contest the validity or enforceability of
signed documents under the provisions of any applicable law relating to whether
certain agreements are to be in writing or signed by either party to be bound
thereby. Signed documents, if introduced as evidence on paper in any judicial,
arbitration, mediation or administrative proceedings, will be admissible as
between Buyer and BRAD to the same extent and under the same conditions as other
business records originated and maintained in documentary form. Neither Buyer
nor BRAD shall contest the admissibility of copies of signed documents under
either the business records exception to the hearsay rule or the best evidence
rule on the basis that the signed documents were not originated or maintained in
documentary form.

 Section 2.9.4.5. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

    Section 2.10. Packing. All Spare Parts ordered shall receive standard
commercial packing suitable for export shipment via air freight. Such standard
packing will generally be to ATA 300 standards as amended from time to time. All
AOG orders will be handled, processed, packed and shipped separately.

    Section 2.11. Packing List. BRAD shall insert in each shipment a packing
list/release note itemized to show:

            (i) the contents of the shipment,

           (ii) the approved signature of BRAD's TC authority attesting to the
      airworthiness of the Spare Parts.

          (iii) value of the shipment for customs clearance if required.

    Section 2.12. Container Marks. Upon Buyer's request each container shall be
marked with shipping marks as specified on the Order. In addition BRAD shall,
upon request, include in the markings: gross weight and cubic measurements.

    Section 2.13. Delivery, Title and Risk of Loss.

  Section 2.13.1. Delivery Point. Spare Parts shall be delivered to Buyer in one
of the following manners at BRAD's sole option:

            (i) Free Carrier (Incoterms 1990) BRAD's plant in either Ontario or
      Quebec, Canada; or

           (ii) Free Carrier (Incoterms 1990) other BRAD depots or shipping
      points; or

          (iii) Free Carrier (Incoterms 1990) vendor's or subcontractor's plant.
<PAGE>   103
  Section 2.13.2. Delivery Time. BRAD shall use reasonable efforts so that
shipment of BRAD Parts to Buyer be as follows:

       a) AOG Orders. Ship AOG Orders within four (4) hours of receipt of Order.
Buyer's affected Aircraft factory production number shall be required on AOG
Orders;

       b) Critical Orders (A1), Ship critical Orders within twenty-four (24)
hours of order receipt;

       c) Expedite Orders (A2) Ship expedite Orders within seven (7) calendar
days of order receipt;

       d) Initial Provisioning Order. Prior to the Delivery Date of the first
Aircraft or as may be mutually agreed; and

      e.) Other Orders Shipment of stock items shall be approximately thirty
(30) calendar days after BRAD's receipt of Buyer's Order. Shipment of non-stock
items shall be in accordance with quoted lead times or lead times published in
the current Spare Parts Price Catalogue, procurement data, or provisioning data.

    Section 2.14. Collect Shipments. Where collect shipments are not deemed
practicable by BRAD, charges for shipment, insurance, prepaid freight charges
and all other costs paid by BRAD shall be paid by Buyer promptly upon
presentation to Buyer of invoices covering the same.

    Section 2.15. Freight Forwarder. If Buyer elects to use the services of a
freight forwarder for the onward movement of Spare Parts, Buyer agrees to
release BRAD from and indemnify it for any liability for any fines or seizures
of Spare Parts imposed under any governmental Goods in Transit regulations. Any
such fines levied against BRAD will be invoiced to Buyer and any Spare Parts
seized under such regulations will be deemed to be received, inspected, and
accepted by Buyer at the time of seizure.

    Section 2.16. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

    Section 2.17. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

      BRAD agrees to notify Buyer when material is shipped and shall provide
carrier's reference information (i.e., waybill number).

    Section 2.18. Inspection and Acceptance. All Spare Parts shall be subject to
inspection by Buyer at destination. Use of Spare Parts or failure of Buyer to
give notice of rejection within thirty (30) days after receipt shall constitute
acceptance. Acceptance shall be final and Buyer waives the right to revoke
acceptance for any reason, whether or not
<PAGE>   104
known to Buyer at the time of acceptance. Buyer's remedies for defects
discovered before acceptance are exclusively provided for in Annex A Article
2.19 herein.

    Section 2.19. Rejection. Any notice of rejection referred to in Annex A
Article 2.18 shall specify the reasons for rejection. If BRAD concurs with a
rejection, BRAD shall, at its option, correct, repair or replace the rejected
Spare Parts. Buyer shall, upon receipt of BRAD's written instructions and
Material Return Authorication ("MRA") number, return the rejected Spare Parts to
BRAD at its specified plant, or other destination as may be mutually agreeable.
The return of the rejected Spare Parts to BRAD and the return or delivery of a
corrected or repaired rejected Spare Part or any replacement for any such Spare
Part to Buyer shall be at BRAD's expense. Any corrected, repaired or replacement
Spare Parts shall be subject to the provisions of this Agreement.

    Section 2.20. Payment Except as provided in Annex A Article 2.22 below,
payment terms shall be net thirty (30) calendar days of invoice date for
established open accounts. Any overdue amount shall bear interest from the due
date until actual payment is received by BRAD at an annual rate of interest
equal to the [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

    Section 2.21. Payment for Provisioning Items. Payment for Provisioning Items
shall be made by Buyer as follows:

             a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION] of the total price of the Provisioning
      Items as selected by Buyer, upon signature of the spares provisioning
      document; and

             b) the balance of the total price of Provisioning Items upon their
      delivery.

    Section 2.22. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:

            (i) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

           (ii) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

    Section 2.23. Regulations. Buyer shall comply with all applicable monetary
and exchange control regulations and shall obtain any necessary authority from
the governmental agencies administering such regulations to enable Buyer to make
payments at the time and place and in the manner specified herein.

    Section 2.24. Warranty. ANNEX B hereto exclusively sets forth BRAD'S
warranty obligations with respect to spare parts. Except as expressly set out in
Annex B, there are no understandings, representations, conditions or warranties,
express or implied, between the
<PAGE>   105
parties with respect to any defect in the spare parts or any other thing
delivered under this Agreement.

    Section 2.25. Cancellation of Orders. Except as otherwise may apply to
initial provisioning, if Buyer cancels an Order, BRAD, at its option, shall be
entitled to recover actual damages, but not less than the following cancellation
charges or more than the purchase price of the Spare Parts covered by the Order:

             a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

             b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

             c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

   Section 2.2.6. Lease. BRAD shall select and make available certain parts for
lease, subject to availability Buyer has the option to negotiate a lease
agreement with BRAD separate from this Agreement.

    Section 2.27. Additional Terms and Conditions. BRAD's conditions of sale are
deemed to incorporate the terms and conditions stated herein. Additional terms
and conditions applicable at time of receipt of each order from Buyer may be
added providing such terms and conditions do not conflict with the terms and
conditions provided herein. Such additional terms and conditions shall be
provided to Buyer at least ninety (90) calendar days prior to their effective
date.

                                    ARTICLE 3
                                    TRAINING

     Section 3.1. General Terms.

   Section 3.1.1. The objective of the training programs (the "Programs"), as
described herein, shall be to familiarize and assist Buyer's personnel in the
introduction, operation, and maintenance of the Aircraft.

      BRAD shall offer to the Buyer the Programs in the English language at a
BRAD designated facility; the Programs shall be completed prior to the Delivery
Date of the last Aircraft purchased herein.

   Section 3.1.2. Buyer shall be responsible for all travel and living expenses,
including local transportation, of Buyer's personnel incurred in connection with
the Programs.
<PAGE>   106
   Section 3.1.3 The Programs shall be designed to reflect the model and/or
configuration of the Aircraft and may include differences training to identify
such configuration or model. Manuals which are provided during the Programs
exclude revision service.

   Section 3.1.4. A training conference shall be held where possible no later
than twelve (12) months prior to the Scheduled Delivery Date of the first
Aircraft to the Buyer, or as may be otherwise agreed, to establish the Programs'
content and schedule.

     Section 3.2. Flight Crew Training.

   Section 3.2.1. Flight Crew Ground Training. [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION], BRAD will provide
with each delivered Aircraft, a TC or FAA approved transition training for
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] who meet the minimum entry requirement provided in the
applicable training manual. Each course shall consist of up to eighty (80) hours
of classroom instruction which may include part task trainer, Computer Based
Training (CBT), and/or Flight Training Device (FTD). BRAD shall furnish each of
Buyer's licensed pilots attending the course one copy of the Flight Crew
Operating Manual.

   Section 3.2.2. Pilot Simulator Training. BRAD shall provide access at
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] to a TC or FAA approved flight simulator for the crew
trained under Annex A Article 3.2.1. BRAD shall provide a simulator instructor
for [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] for the crew trained on BRAD's designated simulator in
Montreal; each mission shall consist of [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] in the simulator and
required briefing/debriefing sessions.

   Section 3.2.3. In-flight Training. Should Buyer require aircraft flight
training, such training shall be conducted in Buyer's Aircraft after the
Delivery Date for up to a maximum [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] of Buyer's pilots. BRAD
shall provide an instructor pilot at no additional charge; Buyer shall be
responsible for the cost of fuel, oil, landing fees, taxes, insurance,
maintenance, and other associated operating expenses required for the Aircraft
during such training.

   Section 3.2.4. Flight Attendant Course. A familiarization course for up to
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] of Buyer's flight attendant personnel shall be conducted.
Each course shall be for a maximum [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] working days duration.
This course shall present general information on the Aircraft and detailed
information on the operation of the passenger safety equipment and emergency
equipment. BRAD shall furnish for each participant in this course one (1) copy
of the Flight Attendant Training Guide which shall
<PAGE>   107
not be revised. Buyer shall assist BRAD in the development of the Flight
Attendant Training Guide to incorporate Buyer's specific equipment and
procedures.

   Section 3.2.5. Flight Dispatcher Course. A course for up to [CONFIDENTIAL
PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION] of Buyer's flight dispatch personnel shall be conducted. Each course
shall be for a maximum of [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION] days duration. The course shall
consist of classroom instruction covering general Aircraft familiarization,
coverage of performance, flight planning, weight and balance and the Minimum
Equipment List. BRAD shall furnish for each participant in this course one (1)
copy of the Flight Crew Operating Manual which shall not be revised.

   Section 3.2.6. Recurrent Pilot Training. BRAD shall, upon Buyer's request,
provide a proposal for a TC or FAA approved course for type rated pilots,
customized in content to meet the recurrent training of Buyer's pilots.

   Section 3.2.7. Course Training Material. BRAD shall, upon Buyer's request,
present a proposal to provide one (1) set of the materials (without revision
service) used to conduct the Flight Crew Ground Training course, as follows:

             i)   35 mm slides;

            ii)   Instructional Narrative and/or Instruction Guides;

           iii)   Overhead Projection Transparencies;

            iv)   Motion picture and/or Video tapes; and

             v)   Audio cassettes tapes.

     Section 3.3.   Maintenance Training.

   Section 3.3.1. Airframe and Powerplant Systems Maintenance Course. BRAD
shall, [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE Commission], train up to [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] of Buyer's qualified
personnel per Aircraft. This course shall emphasize detailed systems
description, operation, and routine line maintenance practices. The course
material shall be principally mechanical with electrical and avionics
information for overall systems comprehension. The course duration shall be for
a maximum of [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

   Section 3.3.2. Electrical and Avionics Systems Maintenance Course. BRAD
shall, [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION], train up to [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] of Buyer's qualified
<PAGE>   108
personnel per Aircraft. The course shall emphasis detailed systems description,
operation and routine line maintenance practices. The course material shall be
principally electrical and avionic but shall include mechanical information for
overall systems comprehension. The course duration shall be for a maximum of
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].

   Section 3.3.3. Ground Handling Course. BRAD shall, [CONFIDENTIAL PORTION
DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] of
Buyer's qualified personnel per Aircraft. This course shall provide ramp service
personnel with training to be able to tow and park Aircraft and perform routine
ramp servicing tasks. Such training shall be conducted in class with a practical
demonstration on Buyer's Aircraft after acceptance. The course duration shall be
a maximum [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE COMMISSION] days and the practical demonstration shall not exceed
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] working days.

   Section 3.3.4, General Familiarization Course. BRAD shall, [CONFIDENTIAL
PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION], train up to [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION] of Buyer's personnel. The course shall
generally describe the Aircraft, the systems and the maintenance and support
requirements. This course is primarily designed for Buyer's facilities planning,
parts provisioning and aircraft management personnel. The course duration is for
a [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE Commission] working days.

   Section 3.3.5. Engine Run-up Course. BRAD shall provide an Engine Run-up
course, [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
AND EXCHANGE Commission], for up to [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] of Buyer's qualified
personnel. This course enables Buyer's personnel to gain proficiency in engine
and APU runs, cockpit management procedures , malfunctions and exceedences. A
prerequisite for this course is satisfactory completion of the Airframe and
Powerplant Systems Maintenance course. The course duration shall be for a
maximum of [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION] working days.

   Section 3.3.6. Specialist Courses. At Buyer's request, BRAD shall make a
proposal for specialist courses which will be derived from BRAD's standard
courses detailed herein.

   Section 3.3.7. Recurrent Training. At Buyer's request, BRAD shall make a
proposal for a Regulatory Authority approved training plan for maintenance
recurrent training.

   Section 3.3.8. Vendor Training. At Buyer's request, BRAD shall assist Buyer
to obtain vendor maintenance training.
<PAGE>   109
   Section 3.3.9. Course Training Material. BRAD, upon Buyer's request, shall
present a proposal to provide one (1) set of the training materials (without
revision service) used to conduct BRAD's standard training as detailed herein:

             i)   35 mm slides;

            ii)   Lesson Guides;

           iii)   Overhead Projection Transparencies;

            iv)   Motion picture and/or Video tapes; and

             v)   Audio cassettes tapes.

     Section 3.4.   Insurance.

   Section 3.4.1. Buyer shall at all times during flight training in Buyer's
Aircraft secure and maintain in effect, at its own expense, insurance policies
covering the Aircraft including without limitation:

             a) liability insurance covering public liability, passenger, crew,
      property and cargo damage in amounts not less than [CONFIDENTIAL PORTION
      DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]
      for any single occurrence;

             b) all risk aircraft hull and engine insurance for an amount which
      is not less than [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
      THE SECURITIES AND EXCHANGE COMMISSION].

   Section 3.4.2. The liability policy shall name BRAD (and its affiliates) as
additional insured. The hull policy shall contain a waiver of subrogation in
favour of BRAD (and its affiliates). All insurance policies shall provide for
payments despite any misrepresentations or breach of warranty by any person
(other than the assured receiving payments) and shall not be subject to any
offset by any other insurance carried by BRAD except that Buyer shall not be
required to provide insurance with respect to the manufacturing, repair and
maintenance activities of BRAD (and of its affiliates) and the related potential
liability (product or otherwise) arising therefrom.

                                    ARTICLE 4
                                 TECHNICAL DATA

     Section 4.1. Technical Data Provided. BRAD shall furnish to Buyer the
Technical Data described in Attachment A hereto (the "Technical Data"). The
Technical Data shall be in the English language and shall provide information on
items manufactured according to BRAD's detailed design and in those units of
measures used in the Specification or as may otherwise be required to reflect
Aircraft instrumentation as may be mutually agreed.
<PAGE>   110
     Section 4.2. Shipment. All Technical Data provided hereunder shall be
delivered to Buyer Free Carrier (Incoterms) BRAD's designated facilities and at
the time indicated in Attachment A.

     Section 4.3. Proprietary Technical Data. It is understood and Buyer
acknowledges that the Technical Data provided herein is proprietary to BRAD and
all rights to copyright belong to BRAD and the Technical Data shall be kept
confidential by Buyer. Buyer agrees to use the Technical Data solely to
maintain, operate, overhaul or repair the Aircraft or to make installation or
alteration thereto allowed by BRAD.

      Technical Data shall not be disclosed to third parties or used by Buyer or
furnished by Buyer for the design or manufacture of any aircraft or Spare Parts
including BRAD Parts or items of equipment, except when manufacture or redesign
is permitted under the provisions of Annex A Article 2.4 hereof and then only to
the extent and for the purposes expressly permitted therein, and provided
further the recipient shall provide a non-disclosure undertaking acceptable to
BRAD.

                                  ATTACHMENT A
                             LIST OF TECHNICAL DATA
                       COLUMN HEADING EXPLANATION OF CODES

<TABLE>
<CAPTION>
ITEM        DOC            DOCUMENT
<S>         <C>            <C>
1
                           Title of Technical Data provided.

2           Config         Configuration
                           G = Contains data common to all aircraft of the same
                           type (Generic). C = Contains data unique to Buyer's
                           Aircraft (Customized).

3           Medium         Buyer selects one of the following media specified in the table:
                           1 = Print two sides
                           2 = Microfilm
                           3 = Print one side
                           4 = Laminated Cardboard

4           Revision       Y = Periodic revision service applies
                           N = Revision service not applicable
                           S = Revised as required by BRAD

5           Quantity
            (Number        = Quantity per the Agreement
            (Number) Per   = Quantity per Aircraft

6           Delivery
                           ATD = At time of the Delivery Date of the first Aircraft.
</TABLE>
<PAGE>   111
<TABLE>
<S>         <C>            <C>
                           PTD = Prior to the Delivery Date of each or
                           the first Aircraft (as applicable).

7           ATA            Y = Document is per ATA Specification 100, Revision 26.
                           N = Document is to BRAD's existing commercial practices.
</TABLE>

With the delivery of the first Aircraft, BRAD will provide to Buyer at no
additional charge one set of the technical manuals listed below
<PAGE>   112
                                 TECHNICAL DATA
                                  REGIONAL JET

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------
ITEM                  DOC                  CONF MEDIUM  QTY    REV  DEL   ATA REMARKS
                                                                                 S
- ---------------------------------------------------------------------------------------
<S>    <C>                                 <C>  <C>     <C>    <C>  <C>   <C> <C>
1.     Aircraft Maintenance Manual (AMM)   G    1, 2    1      Y    PTD   Y
- ---------------------------------------------------------------------------------------
2.     Illustrated Parts Manual/Catalog    G    1, 2    1      Y    PTD   Y
       (IPC)
- ---------------------------------------------------------------------------------------
3.     Structural Repair Manual (SRM)      G    1, 2    1      Y    PTD   Y
- ---------------------------------------------------------------------------------------
4.     Component Maintenance Manual (CMM)  G    1, 2    1      Y    PTD   Y
- ---------------------------------------------------------------------------------------
5.     Power Plant Build-Up Manual         G    1, 2    1      Y    PTD   Y
- ---------------------------------------------------------------------------------------
6.     Wiring Diagram Manual               C    1, 2    1      Y    PTD   Y
- ---------------------------------------------------------------------------------------
7.     Illustrated Tool & Equipment        G    1, 2    1      Y    PTD   Y
       Manual (ITEM)
- ---------------------------------------------------------------------------------------
8.     Service Bulletins                   G    1       1      S    PTD   Y   See
                                                                              Note 2
- ---------------------------------------------------------------------------------------
9.     Non Destructive Test Manual (NDT)   G    1       1      Y    PTD   Y
- ---------------------------------------------------------------------------------------
10.    Maintenance Program Document (MPD)  G    1       3      S    PTD   Y   See
                                                                              Note 3
- ---------------------------------------------------------------------------------------
11.    Faa or Dot Airplane Flight Manual   C    1       1 PER  S    ATD   N
       (AFM)
- ---------------------------------------------------------------------------------------
12     Weight & Balance Manual             G    1       1      Y    ATD   Y
- ---------------------------------------------------------------------------------------
13     Master Minimum Equipment List       G    1       1      S    ASAP  N
       (MMEL)
- ---------------------------------------------------------------------------------------
14     Quick Reference Handbook            C    1       1 PER  S    ATD   N
- ---------------------------------------------------------------------------------------
15.    Flight Crew Operating Manual        C    1       4      S    ATD   N   See
       (FCOM)                                                                 Note 1
- ---------------------------------------------------------------------------------------
16.    Maintenance Task Cards              C    3       3      S    PTD   N
- ---------------------------------------------------------------------------------------
17.    Access Panels And Doors/Component   G    1       2      N    PTD   N
       Location Manual
- ---------------------------------------------------------------------------------------
18.    Flight Planning & Cruise Control    G    1       2      S    ASAP  N
       Manual
- ---------------------------------------------------------------------------------------
19.    Aircraft Characteristics For        G    1       2      N    ASAP  N   See
       Airport Planning                                                       Note 4
- ---------------------------------------------------------------------------------------
20.    On-Board Wiring Diagram Book        C    3       A/R    N    ATD   N   See
                                                                              Note 5
- ---------------------------------------------------------------------------------------
21.    Maintenance Facilities & Equipment  G    1       2      S    ASAP  N
       Planning Manual
- ---------------------------------------------------------------------------------------
22.    System Schematic Manual (SSM)       G    1, 2    1      Y    ATD   Y   See
                                                                              Note 1
- ---------------------------------------------------------------------------------------
23.    Passenger Information Sheet         G    3       1      S    ATD   N   See
                                                                              Note 6
- ---------------------------------------------------------------------------------------
24.    Pilot Checklist                     C    4       1 PER  S    ATD   N
- ---------------------------------------------------------------------------------------
25.    Crash Crew Chart                    G    4       1 PER  S    ATD   N
- ---------------------------------------------------------------------------------------
26.    Dispatch Deviation Guide            G    1       1      S    PTD   N
- ---------------------------------------------------------------------------------------
</TABLE>
<PAGE>   113
NOTE 1:  REVISION SERVICE

       A. Revision services shall only be available for six (6) months following
the Delivery Date of Buyer's last Aircraft. Subsequent revision service shall be
provided dependent upon incorporation of BRAD issued Service Bulletins.

       B. Revisions to the Technical Data to reflect the Aircraft at Delivery
Date shall be provided to Buyer within six (6) months following the Delivery
Date of each of the Aircraft, respectively.

       C. Provided the revision service is being supplied under the terms of
this Agreement or by subsequent purchase order, BRAD shall incorporate in the
applicable documents all applicable BRAD originated Service Bulletins in a
regular revision following formal notification by Buyer that such Service
Bulletins shall be accomplished on the Buyer's Aircraft. The manuals shall then
contain both original and revised configuration until Buyer advises BRAD in
writing that one configuration is no longer required.

NOTE 2:  SERVICE BULLETINS

      Aperture cards of the service drawing(s) will be provided in lieu of
drawings when practical.

NOTE 3:  MAINTENANCE PROGRAM DOCUMENT

      This manual provides the basis for Buyer's initial maintenance program.

NOTE 4:  AIRCRAFT CHARACTERISTICS FOR AIRPORT PLANNING

      This manual contains data on Aircraft ground maneuver and handling.

NOTE 5:  ON-BOARD WIRING DIAGRAM BOOK

      This book contains wiring diagrams for interim reference until the Wiring
Diagram Manual is revised to reflect the Aircraft at the Delivery Date.

NOTE 6:  PASSENGER INFORMATION CARDS

      BRAD will provide one (1) reproducible master for the preparation of
passenger information cards. For an additional cost, subject to negotiation,
BRAD will provide full colour laminated passenger information cards in
quantities required.
<PAGE>   114
                        WARRANTY AND SERVICE LIFE POLICY

                                    ARTICLE 1
                                    WARRANTY

      The following warranty is that to which reference is made in Article 3 of
the Agreement.

     Section 1.1.   Warranty.

   Section 1.1.1. Subject to Annex B Articles 1.9, 1.10, and 2.0, BRAD warrants
that, at the date of delivery of the Aircraft or BRAD Part, as applicable :

             a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

             b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION];

             c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             d.) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

   Section 1.1.2. The Warranty set forth in Annex B Article 1.1.1 (c) and (d)
above shall also be applicable to BRAD Parts purchased as Spare Parts.

   Section 1.1.3. BRAD further warrants that, at the time of delivery, the
Technical Data shall be free from error.

     Section 1.2.   Warranty Period

   Section 1.2.1. The Warranty set forth in Annex B Article 1.1 shall remain in
effect for any defect covered by the Warranty (a "Defect") becoming apparent
during the following periods (individually, the "Warranty Period"):

             a) for failure to conform to the Specification and in the
      installation referred to in Annex B Article 1.1.1 (a) and 1.1.1 (b),
      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
      EXCHANGE COMMISSION] from the Delivery Date;

             b) for those Defects in material or workmanship in BRAD Parts
      referred to in Annex B Article 1.1.1 (c) and 1.1.2, [CONFIDENTIAL PORTION
      DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]
      from the date of delivery of such parts;
<PAGE>   115
             c) for those Defects in design referred to in Annex B Article 1.1.1
      (d), [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION] from the date of delivery of such
      parts; and

             d) for errors in the Technical Data referred to in Annex B Article
      1.1.3, [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION] from the date of delivery of the
      applicable Technical Data.

     Section 1.3. Repair, Replacement or Rework.. As to each matter covered by
this Warranty BRAD's sole obligation and liability under this Warranty is
expressly limited to, at BRAD's election, correction by the repair, replacement
or rework of the defective part or item of Technical Data. The repaired,
replaced or reworked part or item of Technical Data which is the subject of the
Warranty claim shall then be warranted under the same terms and conditions for
the then unexpired portion of the Warranty Period.

      In the case of a Defect relating to non-conformance with the
Specification, BRAD shall correct that Defect in the equipment item or part in
which the Defect appears, except that BRAD will not be obligated to correct any
Defect which has no material adverse effect on the maintenance, use or operation
of the Aircraft.

     Section 1.4. Claims Information.. BRAD's obligations hereunder are subject
to a Warranty claim to be submitted in writing to BRAD's warranty administrator,
which claim shall include but not be limited to the following information:

             a) the identity of the part or item involved, including the Part
      number, serial number if applicable nomenclature and the quantity claimed
      to be defective;

             b) the manufacturer's serial number of the Aircraft from which the
      part was removed;

             c) the date the claimed Defect became apparent to Buyer;

             d) the total flight hours (and cycles if applicable) accrued on the
      part at the time the claimed Defect became apparent to Buyer; and

             e) a description of the claimed Defect and the circumstances
      pertaining thereto.

     Section 1.5. BRAD's Approval. Within ten (10) working days following
receipt of Buyer's Warranty claim for a Defect accompanied by Buyer's request
for permission as applicable to correct a Defect, BRAD shall notify Buyer of its
decision on the request. Approval under this Article shall not constitute a
determination as to the existence of a Defect as described in Annex B Article
1.1 above.
<PAGE>   116
     Section 1.6. Timely Corrections. BRAD shall make the repair, replacement or
rework, following receipt of the defective part or item, with reasonable care
and dispatch.

     Section 1.7. Labour Reimbursement. For correction of Defects BRAD shall
establish a reasonable estimate for the labour hours required for the repair,
replacement or rework of the defective BRAD Part and, if the repair, replacement
or rework is performed by Buyer, BRAD shall reimburse Buyer for BRAD estimated
hours or for Buyer's actual labour hours, whichever is less, for the repair,
replacement or rework of the defective BRAD Part excluding any work necessary to
gain access to said BRAD Part. Such reimbursement shall be based upon Buyer's
direct labour rate per manhour plus burden rate of fifty percent (50%), subject
to annual review and adjustment of such labour rate as mutually agreed;
provided, however, that this amount shall not exceed fifty percent (50%) of the
BRAD published selling labour rate.

     Section 1.8. Approval, Audit, Transportation and Waiver. All Warranty
claims shall be subject to audit and approval by BRAD. BRAD will use reasonable
efforts to advise in writing the disposition of Buyer's Warranty claim within
thirty (30) days following the receipt of the claim and (if requested) return of
the defective BRAD Part to BRAD's designated facility. BRAD shall notify Buyer
of BRAD's disposition of each claim.

      Buyer shall pay all costs of transportation of the defective part from
Buyer to BRAD and shall pay all costs of transportation of the repaired,
corrected or replacement parts back to Buyer.

     Section 1.9.   Limitations.

   Section 1.9.1. BRAD shall be relieved of and shall have no obligation or
liability under this Warranty if:

             a) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             b) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             c) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

                   1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
            THE SECURITIES AND EXCHANGE COMMISSION]

                   2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
            THE SECURITIES AND EXCHANGE COMMISSION]
<PAGE>   117
             e) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             f) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

   Section 1.9.2. The above warranties do not apply to Buyer Furnished
Equipment.

    Section 1.10. Normal Usage. Normal wear and tear and the need for regular
maintenance and overhaul shall not constitute a Defect or failure under this
Warranty.

    Section 1.11. Overhaul of Warranty Parts. BRAD's liability for a BRAD Part
which has a Defect and is overhauled by Buyer within the Warranty Period shall
be limited only to that portion of the labour and material replacement related
to the Defect.

    Section 1.12. No Fault Found. In the event that a BRAD Part returned under a
Warranty claim is subsequently established to be serviceable then BRAD shall be
entitled to charge and recover from Buyer any reasonable costs incurred by BRAD
in connection with such Warranty claim. Providing, however, in the event that
repetitive in-service failure occurs on the particular BRAD Part which is
subsequently identified by BRAD on a repeated basis to be "no fault found," then
BRAD and Buyer shall discuss and mutually agree a course of further action to
help identify the problem. In the event the fault is ultimately confirmed to be
a legitimate Warranty claim then the above mentioned costs incurred by BRAD and
charged to Buyer shall be waived.

                                   ARTICLE 2.
                                VENDOR WARRANTIES

     Section 2.1. Warranties from Vendors. The Warranty provisions of this Annex
B apply to BRAD Parts only. However, BRAD has made or shall make reasonable
efforts to obtain favourable warranties from vendors, with respect to Vendor
Parts and Power Plant Parts. Except as specifically provided under this Annex B
Article 2, BRAD shall have no liability or responsibility for any such Vendor
Parts and Power Plant Parts and the warranties for those Vendor Parts and Power
Plant Parts shall be the responsibility of the vendor and a matter as between
Buyer and vendor.

     Section 2.2. Vendor Warranty Backstop. For those Vendor Parts installed on
the Aircraft at the Delivery Date or subsequently purchased through BRAD,
excluding the Powerplant or the Power Plant Parts, in the event the parties
agree that a vendor is in default in the performance of any material obligation
under any applicable warranty obtained by BRAD from such vendor pursuant to
Annex B Article 2.1 above, the warranties and all other terms and conditions of
Annex B Article 1 shall become applicable as if the Vendor Parts had been a BRAD
Part, except that the warranty period shall be the Warranty Period as set forth
herein or by the vendor's warranty, whichever is shorter and all transportation
costs associated with the Vendor Parts shall be borne by Buyer.
<PAGE>   118
     Section 2.3. BRAD's Interface Commitment. In the event of a dispute in the
application of a Vendor Part warranty, at Buyer's request addressed to BRAD's
warranty administrator, BRAD shall, without charge, conduct an investigation and
analysis of any such dispute resulting from a technical interface problem to
determine, if possible, the cause of the interface problem and then recommend
feasible corrective action. Buyer shall furnish to BRAD all data and information
in Buyer's possession relevant to the interface problem and shall cooperate with
BRAD in the conduct of its investigation and such tests as may be required.
BRAD, at the conclusion of its investigation, shall advise Buyer in writing of
BRAD's opinion as to the cause of the problem and BRAD's recommended corrective
action.

                                   ARTICLE 3.
                               SERVICE LIFE POLICY

     Section 3.1. Applicability. The Service Life Policy ("SLP") described in
this Annex B Article 3 shall apply if fleetwide and repetitive failures occur in
any Covered Component which is defined in Annex B Article 3.7 below.

     Section 3.2.   Term.

   Section 3.2.1. Should such failures occur in any Covered Component within
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] following delivery of the Aircraft containing such Covered
Component, BRAD shall, as promptly as practicable and at its option;

             a) design and/or furnish a correction for such failed Covered
      Component; or

             b) furnish a replacement Covered Component (exclusive of standard
      parts such as bearings, bushings, nuts, bolts, consumables and similar low
      value items).

     Section 3.3. Price. Any Covered Component which BRAD is required to furnish
under this SLP shall be provided for at a price calculated in accordance with
the following formula:

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION]

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION]

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION];

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
            SECURITIES AND EXCHANGE COMMISSION];

            [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION]
<PAGE>   119
     Section 3.4.   Conditions and Limitations.

   Section 3.4.1. The following general conditions and limitations shall apply
to the SLP:

             a) the transportation cost for the return to BRAD's designated
      facility, if practicable, of any failed Covered Component necessary for
      failure investigation or redesigning studies shall be borne by Buyer;

             b) BRAD's obligations under this SLP are conditional upon the
      submission of reasonable proof acceptable to BRAD that the failure is
      covered hereby;

             c) Buyer shall report any failure of a Covered Component in writing
      to BRAD`s Warranty administrator within two (2) months after such failure
      becomes evident. Failure to give this required notice shall excuse BRAD
      from all obligations with respect to such failure;

             d) the provisions of Annex B Article 1.9 of the Warranty (except
      for subparagraphs (d) and (e) thereof) are incorporated by this reference
      and shall condition BRAD's obligations under this SLP with respect to any
      Covered Component;

             e) BRAD's obligations under this SLP shall not apply to any
      Aircraft which has not been correctly modified in accordance with the
      specifications or instructions contained in the relevant Service Bulletins
      which are furnished to Buyer prior to receipt by BRAD from Buyer of any
      notice of an occurrence which constitutes a failure in a Covered
      Component. The provisions of this subparagraph shall not apply in the
      event that Buyer furnishes reasonable evidence acceptable to BRAD that
      such failure was not caused by Buyer's failure to so modify the Aircraft;

             f) this SLP shall not apply to a failure of a Covered Component if
      BRAD determines that such failure may not reasonably be expected to occur
      on a fleetwide and repetitive basis; and

             g) this SLP shall not apply to a Covered Component where the
      failure results from an accident, abuse, misuse, degradation, negligence
      or wrongful act or omission, unauthorized repair or modification adversely
      affecting a Covered Component, impact or foreign object damage, to any
      Covered Component.

     Section 3.5. Coverage. This SLP is neither a warranty, performance
guarantee nor an agreement to modify the Aircraft to conform to new developments
in design and manufacturing art. BRAD's obligation is only to provide correction
instructions to correct a Covered Component or furnish replacement at a reduced
price as provided in this SLP.

     Section 3.6. Assignment. Buyer's rights under this SLP shall not be
assigned, sold, leased, transferred or otherwise alienated by contract,
operation of law or otherwise, without BRAD's prior written consent. Any
unauthorized assignment, sale, lease, transfer,
<PAGE>   120
or other alienation of Buyer's rights under the SLP shall immediately void all
of BRAD's obligations under the SLP.

     Section 3.7. Covered Component. Only those items or part thereof listed in
Attachment A to this Annex B shall be deemed to be a Covered Component, and
subject to the provisions of this SLP.

                                    ARTICLE 4
                                     GENERAL

     Section 4.1. It is agreed that BRAD shall not be obligated to provide to
Buyer any remedy which is a duplicate of any other remedy which has been
provided to Buyer under any other part of this Annex B.

                                    ARTICLE 5
           [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                       SECURITIES AND EXCHANGE COMMISSION]

     Section 5.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION]:

             1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION],

             2) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION]

             3) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
      SECURITIES AND EXCHANGE COMMISSION].

      NOTHING IN THIS ARTICLE SHALL BE CONSTRUED TO ALTER OBLIGATIONS EXPRESSLY
ASSUMED BY BRAD IN OTHER PROVISIONS OF THIS AGREEMENT, INCLUDING WITHOUT
LIMITATION THE PROVISIONS OF ANNEX "B".
<PAGE>   121
                             ANNEX B - ATTACHMENT A
                               COVERED COMPONENTS

1.    Wing

      a.    Upper and lower integral stringer machined wing planks.

      b.    Machined spar, including auxiliary spars.

      c.    Caps, webs and stiffeners on fabricated spars.

      d.    Front spar to rear spar wing box ribs.

      e.    Main landing gear (MLG) machined trunnion rib.

      f.    MLG side stay machined attachment fittings.

      g.    Wing/fuselage machined attachment fittings.

2.    Fuselage

      a.    Window and windshield frame structure, but excluding the windows and
            windshield. Exterior skins, doublers, circum-ferential frames but
            excluding all systems, fairings, insulation, lining and decorative
            clips and brackets.

      b.    Engine mount support box structure and machined pylon attachment
            fittings. Primary structure frames around body openings for
            passenger door, baggage door, avionics door, flying control access
            door, APU access door and emergency exits.

      c.    Nose landing gear well structure, including wheel well walls,
            ceiling, pressure bulkheads and pressure floor structural components
            at fuselage wing cutout.

3.    Vertical Stabilizer

      a.    All spars.

      b.    Horizontal to vertical stabilizer machined attachment fittings.

      c.    Front spar to fuselage frame machined attachment fittings.

      d.    Exterior skins, ribs, stringers between front and rear spars and
            machined closing rib.

4.    Horizontal Stabilizer
<PAGE>   122
      Front and rear spars and exterior skins, rib and stringers between front
and rear spars.

      The provisions of this Letter Agreement are personal to Buyer and shall
not be assigned or otherwise disposed of by Buyer without the prior written
consent of BRAD.

      This Letter Agreement constitutes an integral part of the Agreement and
subject to the terms and conditions contained therein.

      In the event of the termination of the Agreement, this Letter Agreement
shall become automatically null and void.

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

                                             Yours truly
                                             BOMBARDIER INC.



                                             _______________________________
                                             Walter Galloway
                                             Director, Contracts

ACCEPTED AND AGREED TO:
this ______. day of January, 1997

MESA AIR GROUP, INC.



By___________________________________
Title_________________________________
<PAGE>   123
[BOMBARDIER LOGO]

                                        BOMBARDIER INC.
                                        BOMBARDIER REGIONAL AIRCRAFT DIVISION
                                        Garratt Boulevard
                                        Downsview, Ontario
                                        Canada M3K 1Y5
                                        Telephone (416) 633-7310


                               Thu, Feb 13, 1997


                                              Our Ref: B96-7701-RJTL-CRJ0351-015

Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A.  87401


         Re:      Letter Agreement No. 015 [CONFIDENTIAL PORTION DELETED
         AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

Gentlemen,

         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

<PAGE>   124

SUBJECT:          [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
                  SECURITIES AND EXCHANGE COMMISSION]

1.0      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION].

2.0      [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION].

3.0      This Letter Agreement constitutes an integral part of the Agreement and
         subject to the terms and conditions contained therein.

4.0      In the event of the termination of the Agreement, this Letter Agreement
         shall become automatically null and void.

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

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


                                             Yours truly,

                                             BOMBARDIER INC.


                                             -----------------------------------
                                             Walter Galloway
                                             Director, Contracts

ACCEPTED AND AGREED TO:
this        day of January, 1997
     ------

MESA AIR GROUP, INC.

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


                                      -2-
<PAGE>   125
                                 BOMBARDIER INC.
                      BOMBARDIER REGIONAL AIRCRAFT DIVISION
                                Garratt Boulevard
                               Downsview, Ontario
                                  Canada M3K 1Y
                            Telephone (416) 633-7310



                                 January 8, 1997


Our Ref: B96-7701-RJTL-CRJ0351-016

Mesa Air Group, Inc.
2325 East 30th Street
Farmington, New Mexico
U.S.A. 87401

Gentlemen,


         Re:      Letter Agreement No. 016 (Re: Dispute Resolution Mechanism)


         Reference is made to Purchase Agreement No. CRJ-0351 (the "Agreement")
between Bombardier Inc., represented by its Bombardier Regional Aircraft
Division ("BRAD") and Mesa Air Group, Inc. ("Buyer") for the sale of sixteen
(16) Canadair Regional Jet Aircraft (the "Aircraft").

         This letter, when accepted and agreed to by Buyer contemporaneously
with execution of the Agreement, will become part of the Agreement and will
evidence our further agreement with respect to the matters set forth below.

         All terms used herein and in the Agreement not defined herein, shall
have the same meaning as in the Agreement.

SUBJECT: DISPUTE RESOLUTION MECHANISM

1.0.     Any dispute, difference, controversy or claim arising out of or
         relating to this Agreement, the breach, or non-performance thereof
         shall first be attempted to be resolved by BRAD and Buyer through
         mutual negotiations, consultation and discussions.

2.0.     Should the parties hereto be unable to settle their differences or
         disputes which may arise between them with respect to the
         interpretation or application of this Agreement

<PAGE>   126

         (a "Dispute") by mutual agreement as provided in Article 1.0 above. the
         parties agree to each appoint two (2) representatives to constitute a
         joint commission (the "Joint Commission") to jointly hear the
         representations of each party regarding the Dispute. At least one (1)
         representative of each party shall have knowledge in technical or
         contractual matters depending on the nature of the Dispute. The Joint
         Commission shall, following presentations by each party, issue
         non-binding recommendations to the parties as to how best settle the
         Dispute. If the representatives do not agree on joint recommendations,
         the representatives of each party shall issue their own
         recommendations.

3.0.     Either party may request the formation of the Joint Commission if a
         dispute is not settled within forty-five (45) days following a written
         notice from either party to the other detailing the nature of the
         Dispute and the resolution sought. The request for a Joint Commission
         shall be made in writing and shall contain the names of the
         representatives appointed by the party requesting its formation. The
         other party shall then provide the names of its representatives within
         thirty (30) days following the receipt of the request for a Joint
         Commission.

4.0.     The joint Commission shall have forty-five (45) days from its formation
         to agree on the procedure to be followed, including the place of
         hearing, if any. The Joint Commission shall have sixty (60) days from
         the completion of the presentations by each party to issue its
         recommendations. The actions of the Joint Committee are for the purpose
         of achieving settlement. Comments made by any Committee member, any
         statement made during presentations to the Committee, and all
         demonstrative or documentary evidence is also submitted for the purpose
         of settlement. Nothing stated during the Committee proceedings shall be
         considered an admission by either party, nor shall anything presented
         to the Committee be admitted into evidence during any arbitration
         hearing unless such statement or presentation would be admissible on
         its own merits without consideration that it was part of the Committee
         proceedings.

5.0.     If, despite the recommendations of the Joint Commission, the parties
         are unable to resolve the Dispute, either party may request by sixty
         (60) days prior notice that the Dispute be settled by arbitration in
         accordance with the Arbitration Rules of the American Arbitration
         Association applicable to international matters as may be in force at
         that time, modified as described in the balance of this paragraph. The
         Arbitration panel shall consist of three (3) members, the chair of
         which shall be a recently retired, within five (5) years of the request
         for arbitration, federal of state judge. With regard to the arbitration
         hearing, the Federal Rules of Evidence shall apply, and the non-jury
         trial procedures of the Federal Rules of Civil Procedure shall apply as
         much as practicable to the arbitration hearing itself. The chairman
         shall rule upon all legal objections or procedural questions during the
         meeting. All testimony shall be recorded by a certified court reporter
         or by such other means allowed by the Federal Rules of Civil Procedure
         or which shall be agreed upon by the parties.

6.0.     Within thirty (30) days of the demand to refer the Dispute to
         arbitration, each party shall appoint one (1) arbitrator, who in turn
         will appoint the third arbitrator, within


                                      -2-
<PAGE>   127

         thirty (30) days of their appointments. This third arbitrator shall act
         as the chairman of the Arbitral Tribunal so constituted. The foregoing
         shall not prevent the parties from having the dispute arbitrated by one
         arbitrator selected by mutual agreement if they so desire.

7.0.     The venue of arbitration shall be [CONFIDENTIAL PORTION DELETED AND
         FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]

8.0.     The arbitrators shall not act as "Amiable Compositeur" and shall decide
         according to the terms of the agreement and [CONFIDENTIAL PORTION
         DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION]

9.0.     The award of the arbitration as to any factual determinations shall be
         subject to review only on a "substantial evidence" basis. Any review of
         legal issues shall be upon the same standard of used for appellate
         review of lower court cases.

10.0.    It is expressly agreed that any statement, representation or document
         made or produced to or in connection with, or as a result of the
         formation of a Joint Commission shall be without prejudice and without
         admission of liability by either party and shall not be used as such by
         the other party.

11.0.    Each party shall be responsible for its own costs and expenses incurred
         as a result of, or in connection with the Joint Commission and
         arbitration including the cost, fees and expenses of its own
         representatives.

         If the foregoing correctly sets forth your understanding of our
agreement with respect to the above matters, please indicate your acceptance and
agreement below.


                                             Yours truly

                                             BOMBARDIER INC.


                                             -----------------------------------
                                             Walter Galloway
                                             Director, Contracts

ACCEPTED AND AGREED TO:
this      day of January, 1997
     ----

MESA AIR GROUP, INC.

By
  ---------------------------------
      Title
           ------------------------


                                      -3-
<PAGE>   128
================================================================================

                        SPARE PARTS CONSIGNMENT AGREEMENT





                                   NO. AGT-026





                                     between





                                 BOMBARDIER INC.





                                       and





                              MESA AIR GROUP, INC.

================================================================================
<PAGE>   129
         THIS AGREEMENT made in duplicate and entered into on this ___ day of
January 1997.


                                     between


         Mesa Air Group, Inc., A New Mexico company, having an office at 2325
East 30th Street, Farmington, State of New Mexico, U.S.A. 87401;


                                   ("BUYER");


                                       and


         BOMBARDIER INC., a Canadian corporation represented by its Bombardier
Regional Aircraft Division having its offices at 123 Garratt Boulevard,
Downsview, Ontario, Canada


                                    ("BRAD");


         WITNESSES THAT


         WHEREAS BRAD and Buyer (collectively "the Parties") have entered into
Aircraft Purchase Agreement No. CRJ-0351 (the "Aircraft Purchase Agreement")
whereby Buyer has agreed to for the sale of sixteen (16) Canadair Regional Jet
Aircraft (the "Aircraft").


         WHEREAS at the request of the Buyer, BRAD will provide or cause to be
provided selected [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION] FOR [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] under this spares
consignment agreement [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION] commencing on or about [CONFIDENTIAL
PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION] upon the terms and conditions hereof.


         NOW THEREFORE the Parties agree as follows:


ARTICLE 1 - DEFINITIONS


          1.1. Unless otherwise expressly provided herein, the following words
and expressions shall have the following meanings:


               (a) Agreement means this agreement, any amendments or supplements
     agreed to by the Parties and any schedules, annexes, appendices or exhibits
     attached hereto;


               (c) BRAD [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
     THE AND EXCHANGE COMMISSION] means [CONFIDENTIAL PORTION DELETED AND
     FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE 
<PAGE>   130
         DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE 
         COMMISSION] which bear a [CONFIDENTIAL PORTION DELETED AND FILED 
         SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] in BRAD's 
         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION] for Buyer;


               (d) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
         SECURITIES AND EXCHANGE COMMISSION]


               (e) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
         SECURITIES AND EXCHANGE COMMISSION]


               (f) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
         SECURITIES AND EXCHANGE COMMISSION]; and


ARTICLE 2      TERM


          2.1. This Agreement shall remain in effect for a period of
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] under the Aircraft Purchase Agreement, such [CONFIDENTIAL
PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION] unless earlier terminated under Article 15.0 (the "Term").


ARTICLE 2A - [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
             SECURITIES AND EXCHANGE COMMISSION]


2A.1       BRAD will ship the [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
           WITH THE SECURITIES AND EXCHANGE COMMISSION] valued in the amount of
           approximately [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
           THE SECURITIES AND EXCHANGE COMMISSION] to Buyer [CONFIDENTIAL
           PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
           COMMISSION] BRAD's shipping point for placement in the [CONFIDENTIAL
           PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
           COMMISSION] prior to the [CONFIDENTIAL PORTION DELETED AND FILED
           SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]. BRAD will
           ship additional [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
           WITH THE SECURITIES AND EXCHANGE COMMISSION] in the amount of
           approximately [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
           THE SECURITIES AND EXCHANGE COMMISSION] after [CONFIDENTIAL PORTION
           DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
           COMMISSION]. Buyer is designated as the [CONFIDENTIAL PORTION DELETED
           AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].


2A.2       The Parties agree that, save as otherwise provided for herein, the
           [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
           SECURITIES AND EXCHANGE 


                                       -2-
<PAGE>   131
           COMMISSION] are intended for the exclusive use of Buyer. Buyer shall
           not [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
           SECURITIES AND EXCHANGE COMMISSION] without the prior written consent
           of BRAD or unless requested in writing to do so by BRAD.


ARTICLE 3 - [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
            SECURITIES AND EXCHANGE COMMISSION]


          3.1. Buyer agrees to [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] withdrawn from the
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] for Buyer's use at the [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] to Buyer. Until
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION], BRAD retains [CONFIDENTIAL PORTION DELETED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] by Buyer for
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION] shall be as follows:


                   (1) [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION] it shall notify BRAD in
         writing, specifying [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
         WITH THE SECURITIES AND EXCHANGE COMMISSION], including [CONFIDENTIAL
         PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION]. BRAD shall [CONFIDENTIAL PORTION DELETED AND FILED
         SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] above until
         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION], after which no [CONFIDENTIAL PORTION DELETED
         AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] will
         occur.


                   (2) At the [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
         WITH THE SECURITIES AND EXCHANGE COMMISSION], there will be
         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION] of the [CONFIDENTIAL PORTION DELETED AND FILED
         SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] for
         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION] and Buyer [CONFIDENTIAL PORTION DELETED AND
         FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]. In
         addition, Buyer [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION] BRAD [CONFIDENTIAL PORTION
         DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION], starting with [CONFIDENTIAL PORTION DELETED AND FILED
         SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] after
         [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES
         AND EXCHANGE COMMISSION], as long as [CONFIDENTIAL PORTION DELETED AND
         FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION] with
         Buyer.


                                      -3-
<PAGE>   132
                   (3)  Buyer [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
         WITH THE SECURITIES AND EXCHANGE COMMISSION] at the [CONFIDENTIAL
         PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION] and [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH
         THE SECURITIES AND EXCHANGE COMMISSION] BRAD [CONFIDENTIAL PORTION
         DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION].


                   (4) In an effort to be of assistance to Buyer [CONFIDENTIAL
         PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION], BRAD [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
         WITH THE SECURITIES AND EXCHANGE COMMISSION] Buyer [CONFIDENTIAL
         PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
         COMMISSION] from [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
         WITH THE SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 4 - [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
            WITH THE SECURITIES AND EXCHANGE COMMISSION]


          4.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES AND EXCHANGE COMMISSION].


          4.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 5 - [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
            SECURITIES AND EXCHANGE COMMISSION]


          5.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 6 - [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
            SECURITIES AND EXCHANGE COMMISSION]


          6.1.    During the term of this Agreement, Buyer shall:


                6.1.1.     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
         WITH THE SECURITIES AND EXCHANGE COMMISSION];


                6.1.2.     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
         WITH THE SECURITIES AND EXCHANGE COMMISSION];


                6.1.3.     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
         WITH THE SECURITIES AND EXCHANGE COMMISSION];





                                      -4-
<PAGE>   133
                6.1.4.     [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
         WITH THE SECURITIES AND EXCHANGE COMMISSION].

          6.2.    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES AND EXCHANGE COMMISSION].


          6.3.    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES AND EXCHANGE COMMISSION].


          6.4.    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


          6.5.    [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 7 - AUDIT RIGHTS


          7.1. BRAD shall, at all times during Buyer's working hours, have the
right to examine, audit or otherwise review, [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION]. BRAD undertakes
to [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION], and to observe and comply with all rules, regulations and
procedures of Buyer while on Buyer's premises. [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 8 - CONFIDENTIALITY, INTELLECTUAL PROPERTY AND EXCLUSIVE PURPOSE


         Buyer shall not, without the prior written consent of BRAD, use any
trademarks of BRAD or of its affiliates, including without limitation, the words
or expressions 'Bombardier Regional Aircraft Division', 'Bombardier',
'Bombardier Regional Aircraft', 'BRAD', 'Canadair Regional Jet', or 'Canadair'.
All requests for permission to use any of these trademarks shall be accompanied
with the proposed text or document in which it is proposed to be used.


          8.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 9 - LIENS AND SECURITY INTEREST


          9.1. Buyer will not directly or indirectly create, incur, assume or
suffer to exist any lien, charge or encumbrance on or with respect to
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


          9.2. Buyer shall [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY 
WITH THE SECURITIES AND EXCHANGE COMMISSION].





                                       -5-
<PAGE>   134
          9.3. Buyer shall, [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY
WITH THE SECURITIES AND EXCHANGE COMMISSION]

ARTICLE 10 - GOVERNING LAW


          10.1. This Agreement is governed by and is to be construed in
accordance with the local, domestic laws of [CONFIDENTIAL PORTION DELETED AND
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION], specifically
excluding the application of the rules of private international law.
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION].


ARTICLE 11 - CAPTIONS


          11.1. The captions and headings in this Agreement are inserted for
convenience only and in no way define, construe, alter or modify the provisions
of this Agreement.


ARTICLE 12 - ASSIGNMENT


          12.1. Buyer may not assign this Agreement, or any part of or interest
in it without the expressed written consent of BRAD.


ARTICLE 13 - WAIVER


          13.1. The failure of either BRAD or Buyer to enforce at any time any
of the provisions of this Agreement, or to require at any time performance by
the other, of any of its provisions, will not be construed as a present or
future waiver of such provisions, nor in any way affect the validity of this
Agreement or any part of it, or the right of the other to enforce each and every
such provision, condition or requirement of this Agreement and does not
constitute a waiver or any future obligation to comply with such provision,
condition or requirement.


ARTICLE 14 - NOTICES


          14.1. No notice or communication pertaining to this Agreement shall be
deemed to have been duly given.


         (a)      by Buyer to BRAD unless addressed as follows:


                  Bombardier Regional Aircraft Division
                  123 Garratt Boulevard
                  Downsview, Ontario, M3K 1Y5
                  Canada
                  Attention:  Director of Contracts
                  Telephone:  (416) 375-4052
                  Facsimile:  (416) 375-4533




                                       -6-
<PAGE>   135
         (b)      by BRAD to Buyer unless addressed as follows:


                  Notice by mail


                  MESA AIR GROUP, INC.
                  2325 East 30th Street
                  Farmington, New Mexico
                  U.S.A.  87401


                  Attention:
                  Telephone:
                  Facsimile:


or to such other place or persons as the Parties may respectively designate in
writing.


         Any such notice, requirement, approval, permission, consent or other
communication so delivered by hand will be deemed to have been received by the
addressee on the day when the same has been delivered, or if airmailed, on the
sixth day following the day on which it was airmailed.


ARTICLE 15 - [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE 
             SECURITIES AND EXCHANGE COMMISSION]


          15.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


          15.2. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].


ARTICLE 16 - SEVERABILITY


          16.1. Should any provision of this Agreement be invalid, unenforceable
for legal reasons or impracticable, it shall not affect the validity of the
other provisions of this Agreement. Invalid, unenforceable or impracticable
provisions shall be replaced by provisions that best meet the purpose of the
provisions to be replaced.


ARTICLE 17 - OTHER


          17.1. [CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION].

                                       -7-
<PAGE>   136
     IN WITNESS THEREOF the Parties have executed this Agreement.


MESA AIR GROUP, INC.                       OMBARDIER REGIONAL AIRCRAFT DIVISIOn




By_____________________________________    By___________________________________
  Its:_________________________________      Its:_______________________________


                                       -9-
<PAGE>   137
[CONFIDENTIAL PORTION DELETED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION]


WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 5
<CIK> 0000950153
<NAME> MESA AIR GROUP
<MULTIPLIER> 1
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1997
<PERIOD-END>                               DEC-31-1997
<EXCHANGE-RATE>                                      1
<CASH>                                          55,095
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<TOTAL-ASSETS>                                 701,744
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                                0
                                          0
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<OTHER-SE>                                     124,747
<TOTAL-LIABILITY-AND-EQUITY>                   701,744
<SALES>                                        121,412
<TOTAL-REVENUES>                               121,412
<CGS>                                          116,762
<TOTAL-COSTS>                                  116,762
<OTHER-EXPENSES>                                     0
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<INTEREST-EXPENSE>                               6,696
<INCOME-PRETAX>                                (1,431)
<INCOME-TAX>                                     (556)
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<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     (875)
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