SPECIAL BUSINESS PROVISIONS

                                       between

                                 THE BOEING COMPANY

                                         and

                                      PATS, INC.





                                    6-5754-02-063




                                          i



                             SPECIAL BUSINESS PROVISIONS
                                  TABLE OF CONTENTS

MANDATORY SECTIONS FIXED QTY OR REQUIREMENTS
- --------------------------------------------
Section                                 Item
- -------                                 ----
1.0                                     DEFINITIONS

2.0                                     PURCHASE ORDER NOTE

3.0                                     PRICES

3.1                                     Product Pricing

3.2                                     Manufacturing Configuration Baseline

3.3                                     Packaging

4.0                                     GOVERNING QUALITY

                                        ASSURANCE REQUIREMENT

5.0                                     APPLICABLE LAW/JURISDICTION

6.0                                     PRODUCT ASSURANCE

7.0                                     PAYMENT

7.1                                     Recurring Cost

7.2                                     Non-Recurring Cost

9.0                                     NOTICES

9.1                                     Addresses
- --------------------------------------------------------------------------------

REQUIREMENTS SECTIONS
10.0                                    OBLIGATION TO PURCHASE AND SELL

11.0                                    COST AND FINANCIAL PERFORMANCE 
                                        VISIBILITY

12.0                                    CHANGES

12.1                                    Changes to the Statement of Work

12.2                                    Computation of Equitable Adjustment

12.3                                    Obsolescence

12.4                                    Change Absorption

12.5                                    Planning Schedule

12.6                                    Value Engineering

13.0                                    SPARES AND OTHER PRICING

13.1                                    Spares

13.2                                    Short Flow Production Requirements


                                          ii


                                  TABLE OF CONTENTS

Section                                 Item
- -------                                 ----

13.4                                    Pricing of Boeing's Supporting
                                        Requirements

13.5                                    Pricing of Requirements for
                                        Modification or Retrofit

13.6                                    Similar to Pricing

14.0                                    STATUS REPORTS/REVIEWS

15.0                                    FOREIGN PROCUREMENT REPORT

17.0                                    ASSIGNMENT

19.1                                    Technical Work Product

19.2                                    Inventions and Patents

19.3                                    Works of Authorship and Copyrights

19.4                                    Pre-Existing Inventions and
                                        Works of Authorship
- --------------------------------------------------------------------------------
SCD REQUIREMENTS CONTRACT

20.0                                    ADMINISTRATIVE AGREEMENT

21.0                                    GUARANTEED WEIGHT REQUIREMENTS

22.0                                    SUPPLIER DATA REQUIREMENTS

23.0                                    DEFERRED PAYMENT TERMS

24.0                                    SOFTWARE PROPRIETARY
                                        INFORMATION RIGHTS

Attachment 1                            Work Statement and Pricing

Attachment 2                            Foreign Procurement Report

Attachment 3                            Rates and Factors

Attachment 4                            Boeing AOG Coverage

Attachment 5                            Boeing AOG/Critical

                                        Shipping Notification

ATTACHMENT 6                            SUPPLIER DATA REQUIREMENTS LIST
                                        CUSTOMER SUPPORT

ATTACHMENT 7                            SUPPLIER DATA REQUIREMENTS LIST
                                        ENGINEERING


                                         iii




                                      AMENDMENTS

AMEND
NUMBER                DESCRIPTION               DATE                  APPROVAL
- -------               -----------               ----                  --------











                                          iv




                             SPECIAL BUSINESS PROVISIONS


THESE SPECIAL BUSINESS PROVISIONS are entered into as of January 15, 1998 by 
and between PATS, INC., a Maryland corporation with its principal office in 
Columbia, Maryland ("Seller"), and The Boeing Company, a Delaware corporation 
with an office in Seattle, Washington acting by and through its division the 
Boeing Commercial Airplane Group ("Boeing").

                                       RECITALS

A.     Boeing and Seller entered into a General Terms Agreement GTA
       #5-5754-02-063 dated January 15, 1998 (the "Agreement") which is
       incorporated herein and made a part hereof by this reference, for the
       sale by Seller and purchase by Boeing of Products.

B.     Boeing and Seller desire to include these Special Business Provisions
       ("SBP") relating to the sale by Seller and purchase by Boeing of
       Products.

Now, therefore, in consideration of the mutual covenants set forth herein, the
parties agree as follows:

       A.   Boeing produces commercial airplanes.

       B.   Seller desires to design, manufacture, install, test and 
            certify auxiliary fuel tank systems for 737-700 BBJ Aircraft, and 
            Seller wishes to utilize Buyer's proprietary technical requirements
            documents and other Buyer proprietary technical information and 
            data for that purpose.

       C.   Seller further desires to sell auxiliary fuel tank systems to 
            Buyer and install such systems on 737-700 BBJ Aircraft as directed 
            by Buyer.

       D.   Buyer is willing to disclose its proprietary technical 
            requirements documents and other of its proprietary information, 
            data and documents to Seller and is prepared to monitor (and, at 
            Buyer's discretion, assist with) Seller's design, installation, 
            testing and certification of auxiliary fuel tank systems for 
            737-700 BBJ Aircraft; all on the condition that Seller will keep 
            such proprietary documents, information and data confidential 
            and not use such documents, information or data in any way in 
            connection with the sale of such systems to any customer other 
            than Buyer.

       E.   Buyer and Seller wish to enter into an agreement establishing a 
            framework for facilitating (1) the design, manufacture, testing and
            certification of auxiliary fuel tank systems by Seller, (2) the sale
            of such systems by Seller to Buyer, and (3) the installation of such
            systems, when purchased by Buyer, on aircraft owned by Buyer's 
            customers; all in accordance with individual purchase orders which 
            will subsequently be issued by Buyer and accepted by Seller.


                                          1


1.0    DEFINITIONS
       The General Terms Agreement and Product Support and Assurance Agreement
       is incorporated herein and made a part hereof by reference, for the sale
       by Seller and purchase by Buyer of Products. The definitions used herein
       shall be the same as used in the General Terms Agreement Section 1.0.

2.0    PURCHASE ORDER NOTE
       The following note shall be contained in any Order to which these SBP
       and GTA are applicable:

       This Order is subject to and incorporates by this reference
       SBP#________ and GTA #6-5754-02-033 between The Boeing Company and PATS,
       Inc. dated February 17, 1998.

       Each Order bearing such note shall be governed by and be deemed to
       include the provisions of these SBP.

3.0    PRICES

3.1    PRODUCT PRICING
       TO BE USED FOR FIXED QUANTITY (120 SHIPSETS) BUYS.

       REQUIREMENT W/ ABNORMAL ESCALATION - TO BE USED FOR REQUIREMENTS (PERIOD
       OF PERFORMANCE) BUYS

       The prices and applicable period of performance of Products scheduled
       for delivery under this SBP are set forth in Attachment 1. Prices are in
       United States dollars, F.O.B. SELLER'S PLANT. Said prices shall be
       subject to escalation as set forth in Attachment 1.

3.1.1  OPTION PRICING
       Seller irrevocably grants to Boeing the option to purchase any quantity
       of additional Products on the terms and conditions set forth in this SBP
       at the prices set forth herein, increased or decreased by any equitable
       adjustments provided herein.

3.1.2  EXERCISE OF OPTION
       Boeing may exercise such option by written notice to Seller at any time
       prior to the last delivery of the Product(s) to Boeing; provided
       however, that such option must be exercised in sufficient time to permit
       Seller to support Boeing's required deliveries. Seller agrees to provide
       Boeing with written notice at least sixty (60) days prior to the date
       when, in Seller's opinion, the option must be exercised. Boeing may
       extend the option exercise date by purchasing long lead materials, or
       authorizing Seller to purchase such materials on terms acceptable to
       Boeing, if such purchase would have the effect of extending the date for
       assuring production continuity.

       Boeing reserves the right to (a) not exercise the option and commence
       new negotiations with Seller for additional quantities of Products; or
       (b) purchase such additional quantities of Products from third parties.
       The purchase of such additional quantities of Products from third
       parties shall not abrogate any of Seller's obligations to Boeing
       pursuant to the Agreement.


                                          2


3.2    MANUFACTURING CONFIGURATION BASELINE
       Unit pricing for each Product or part number shown in Attachment 1 is
       based on the latest revisions of the engineering drawings or
       specifications at the time of the signing of this SBP.

4.0    GOVERNING QUALITY ASSURANCE REQUIREMENT
       Pick the appropriate governing document for applicable procurement
       package.

       All work performed under this SBP shall be in accordance with the
       following document which is incorporated herein and made a part hereof
       by this reference:

       a) Document D1-8000A, "Quality Control Requirements for Boeing
          Suppliers," as amended from time to time.

                                          OR

       b) All work performed under this SBP shall be in accordance with the
          applicable drawings and specifications and Seller's existing
          quality assurance system in place at the time the Product(s) are
          manufactured.

5.0    APPLICABLE LAW JURISDICTION
       Each Order, including all matters of construction, validity and
       performance, shall in all respects be governed by, and construed and
       enforced in accordance only with the law of the State of Washington as
       applicable to contracts entered into and to be performed wholly within
       such State, between citizens of such State, without reference to any
       rules governing conflicts of law. Seller and Buyer hereby irrevocably
       consents to and submits to the jurisdiction of the applicable courts of
       Washington and the federal courts therein for the purpose of any suit,
       action or other judicial proceeding arising out of or connected with any
       Order or the performance or subject matter thereof. Seller hereby waives
       and agrees not to assert by way of motion, as a defense, or otherwise,
       in any such suit, action or proceeding, any claim that (a) Seller is not
       personally subject to the jurisdiction of the above-named courts, (b)
       the suit, action or proceeding is brought in an inconvenient forum 
       or (c) the venue of the suit, action or proceeding is improper.

6.0    PRODUCT ASSURANCE

6.1    GOVERNING DOCUMENT
       Seller acknowledges that Boeing and Customers must be able to rely on
       each Product performing as specified and that Seller will provide all
       required support. Accordingly, the following provisions and document(s)
       are incorporated herein and made a part hereof:

       Seller warrants to Boeing and Customers that Products shall: (a) conform
       in all respects to all the requirements of the Order; (b) be free from
       all defects in materials and workmanship; and (c) to the extent not
       manufactured pursuant to detailed designs furnished by Boeing, be free
       from all defects in design and be fit for the intended purposes.


                                          3



SCD CONTRACTS
REPAIRABLE

6.2       PRODUCT SUPPORT AGREEMENT-SUPPLIER DESIGNED EQUIPMENT."DOCUMENT
          NO. D6-51880.
          Boeing may choose initially not to extend the Seller's full warranty
          of Product to Customers. This action shall in no way relieve
          Seller of any obligation set forth in the warranty documents listed
          above. Boeing at its sole option may extend Seller's full warranty of 
          Product to its Customers at any time. Furthermore, Seller agrees 
          to provide support to the Product as long as any model Aircraft 
          using or supported by the Product remains in service.

7.0       PAYMENT

7.1       RECURRING PRICE
          Unless otherwise provided under the applicable Order (see Attachment
          Number -7-), Payment shall be net thirty (30) calendar days.
          Payment due dates, including discount periods, shall be computed from
          (a) the date of receipt of the Product, (b) the date of receipt of a
          correct invoice or (c) the scheduled delivery date of such Product,
          whichever is last. Any discount shall be taken on the full amount of
          the invoice. All payments are subject to adjustment for shortages,
          credits and rejections.

7.2       NON-RECURRING PRICE/SPECIAL CHARGES
          Unless otherwise provided in the applicable Order, any non-recurring
          price payable by  Boeing under Attachment 1 shall be paid within
          the term discount period or thirty (30) calendar days (whichever is
          later) after receipt by Boeing of both acceptable Products and a
          correct invoice.

9.0       NOTICES

9.1       ADDRESSES
          Notices and other communications shall be given in writing by personal
          delivery, United States mail, telex, teletype, telegram, facsimile,
          cable or electronic transmission addressed  to the respective party
          as follows:

          To Boeing:          Attention: Peter M. Castner:  M/S 38-EW
                              BOEING COMMERCIAL AIRPLANE GROUP
                              MATERIEL DIVISION
                              P.O. Box 3707
                              Seattle, Washington 98124-2207
                              (425) 266-0755

          To Seller:          Mr. George Toly
                              PATS, Inc.
                              9570 Berger Road
                              Colombia, MD 21046-1569


                                          4


                       THE FOLLOWING SECTIONS TO BE USED IN ALL
                  REQUIREMENTS/PERIOD OF PERFORMANCE TYPE CONTRACTS

10.0      OBLIGATION TO PURCHASE AND SELL

          TO BE USED IN REQUIREMENTS CONTRACT WITH MULTIPLE RELEASES

          Boeing and Seller agree that in consideration of the prices set forth
          under Attachment 1, Boeing shall issue Orders for Products from time
          to time to Seller for Boeing's requirements. Such Products shall be
          shipped at any scheduled rate of delivery, as determined by Boeing,
          and Seller shall sell to Boeing. Boeing's requirements of such 
          Products, provided that, without limitation on Boeing's right to 
          determine its requirements, Boeing shall not be obligated to issue 
          any Orders for any given Product if:

          A.   Any of Boeing's customers specify an alternate product;

          B.   Such Product is, in Boeing's reasonable judgment, not
               technologically competitive at any time, for reasons including
               but not limited to the availability of significant changes in
               technology, design, materials, specifications, or manufacturing
               processes which result in a reduced price or weight or improved
               appearance, functionality, maintainability or reliability;

          C.   Boeing gives reasonable notice to Seller of a change in any of
               Boeing's aircraft which will result in Boeing no longer requiring
               such Product for such aircraft;

          D.   Seller has materially defaulted in any of its obligations under
               any Order, whether or not Boeing has issued a notice of default
               to Seller pursuant to GTA Section 13.0; or,

          E.   Boeing reasonably determines that Seller cannot support Boeing's
               requirements for Products in the amounts and within the delivery
               schedules Boeing requires.

11.0      COST AND FINANCIAL PERFORMANCE VISIBILITY - FOR BUYER DIRECTED CHANGES
          Seller shall provide all necessary cost support data, source documents
          for direct and indirect costs, and assistance at the Seller's facility
          for cost performance reviews performed by Boeing pursuant to any
          Change Order.

12.0      CHANGES

12.1      CHANGES TO THE STATEMENT OF WORK
          Boeing may direct Seller within the scope of the applicable Order and
          in accordance with the provisions of GTA Section 11 to increase or
          decrease the work to be performed by the Seller in the manufacture of
          any Product.

12.2      COMPUTATION OF EQUITABLE ADJUSTMENT (OPTIONAL)
          The Rates and Factors set forth in Attachment 3, which by this
          reference is incorporated herein, shall be used to determine the
          equitable adjustment, if any, (including equitable adjustments, if
          any, in the prices of Products to be incorporated in Derivative
          Aircraft),to be paid by Boeing pursuant to SBP Section 12.1 and GTA
          Section 11 for each individual change.


                                          5


OBSOLESCENCE DOLLAR VALUE TO BE DETERMINED-DEFAULT VALUE $2,500

12.3      OBSOLESCENCE
          Claims for obsolete or surplus material and work-in-process created by
          change orders issued pursuant to this Section shall be subject to the
          procedures set forth in GTA Section 11, except that Seller may not
          submit a claim for obsolete or surplus material resulting from an
          individual change order that has a total claim value of Twelve Hundred
          and fifty dollars ($1,250) or less. Payment for obsolete or surplus
          materials shall be made by check deposited as first class mail to the
          address designated by Seller in SBP Section 9. Payment will be made on
          the tenth (10th) day of the month following the month of the
          obsolescence claim settlement.

12.4      CHANGE ABSORPTION (OPTIONAL)

12.4.1    PRIOR TO 100% ENGINEERING RELEASE (DRAWING REVISION LEVEL NEW)

12.4.1.1
          GENERALLY
          Notwithstanding the provisions of GTA Section 10.0 and SBP Section
          12.1, no equitable adjustment in the prices or schedules of any Order
          shall be made for any change initiated by Boeing made prior to the
          date on which all engineering drawings that change the technical
          requirements, descriptions, specifications, statement of work, drawing
          or designs ("Technical Change(s)") have been released by Boeing ("100%
          Engineering Release") provided, that an equitable adjustment shall be
          made for:

          a.   Any Technical Change which is a change BETWEEN raw material
               classifications such as a change from aluminum to steel or
               titanium to plastic. Not included as a Technical Change for
               purposes of this Section are changes WITHIN a raw material
               classification such as a change from 7050 Aluminum to 7075
               Aluminum;

          b.   Any Technical Change which adds or deletes a process
               specification including but not limited to chem milling, chrome
               plating, anodizing, painting, priming and heat treating.

12.4.1.2
          CLAIMS
          Claims for equitable adjustment for Technical Changes shall be
          submitted in writing within thirty (30) days after 100% Engineering
          Release.

12.4.2
          SUBSEQUENT TO 100% ENGINEERING RELEASE

12.4.2.1
          GENERALLY
          Notwithstanding the provisions of GTA Section 10.0 and SBP Section
          12.1, no equitable adjustment shall be made to the recurring or
          non-recurring prices after the date of 100% Engineering Release for
          any change initiated by Boeing unless the value of such change (debit
          or credit) is greater than or equal to two percent (2%) of the then
          current unit price for the Product (recurring) or is greater than or
          equal to two percent (2%) of the total then current nonrecurring price
          as set forth in Attachment 1. For purposes of this Section, the then
          current unit price or total nonrecurring price shall be the price
          identified in Attachment 1 plus any and all price adjustments agreed
          to previously by the parties.


                                         6




12.4.2.2
          CLAIMS
          Claims shall be made individually for each Product and for each
          change.  Each claim shall be considered separately for application of
          the two percent (2%) threshold.  Changes may not be combined for the
          purposes of exceeding the two percent (2%) threshold set forth herein.

12.6.1    SUBMISSION OF PROPOSAL
          Proposals shall be submitted to Boeing's Material Representative.
          Boeing shall not be liable for any delay in acting upon a proposal.
          Boeing's decision to accept or reject any proposal shall be final.  If
          there is a delay and the net result in savings no longer justifies the
          investment, Seller will not be obligated to proceed with the change.
          Seller has the right to withdraw, in whole or in part, any proposal 
          not accepted by Boeing within the time period specified in the 
          proposal. Seller shall submit, as a minimum, the following information
          with the proposal:

          a.   description of the difference between the existing requirement
               and the proposed change, and the comparative advantages and
               disadvantages of each;

          b.   the specific requirements which must be changed if the proposal
               is adopted;

          c.   the cost savings and Seller's implementation costs;

          d.   Each proposal shall include the need dates for engineering
               release and the time by which a proposal must be approved so as
               to obtain the maximum cost reduction.

12.6.2    ACCEPTANCE AND COST SHARING
          Boeing may accept, in whole or in part, any proposal by issuing a
          change order.  Until such change has been issued, Seller shall remain
          obligated to perform in accordance with the terms and requirements of
          the original Order as written.  Boeing and Seller shall share the
          savings as follows:

               (50%) savings to Boeing;
               (50%) savings to Seller.

          Seller shall include with each proposal verifiable cost records and
          other data as required by Boeing for proposal review and analysis.

          Each party shall be responsible for its own implementation costs,
          including but not limited to non-recurring costs.

12.6.3    COST SAVINGS COMPUTATION
          A change order shall be issued by Boeing and the unit price shall be
          reduced in an amount equal to the savings portion attributable to
          Boeing as set forth above.  The applicable unit price as set forth in
          Attachment 1 Statement of Work shall be amended to reflect such
          change.




          EXAMPLE:
          -------
                                
          Current Price:           $600.00
          Proposed Cost Savings:   $100.00/unit
          Boeing's Percentage:       50.0%
          Seller's Percentage:       50.0%





                                          7


          STEP BY STEP COMPUTATION:
          1.   $100.00 unit savings x 50.0% Boeing's percentage of savings 
               = $50.00 Boeing savings.

          2.   $100.00 unit savings x 50.0% Seller's percentage of savings 
               = $50.00 Seller savings.

          3.   Net affect to the unit cost = $50.00

               New Unit Price For Units = $550.00

12.6.4    WEIGHT REDUCTION PROPOSALS
          Seller is encouraged to submit proposals to Boeing that reduce the
          Product's weight without impairing any essential functions or
          characteristics of the Product.

          Seller shall submit such proposals in accordance with SBP Section
          12.6.1 above.  The amount of any costs or savings that result from a
          weight reduction proposal shall be agreed by Boeing and Seller.
          Seller shall include with each proposal verifiable cost records and
          other data as required by Boeing for proposal review and analysis.

          Boeing may accept in whole or in part, any such proposal by issuing a
          change order to the applicable Order.

13.0      SPARES AND OTHER PRICING

13.1      SPARES

          For purposes of this Section, the following definitions shall apply:

          A.   AIRCRAFT ON GROUND (AOG) - means the highest Spares priority.
               Seller will expend best efforts to provide the earliest possible
               delivery of any Spare designated AOG by Boeing.  Such effort
               includes but is not limited to working twenty-four (24) hours a
               day, seven days a week and use of premium transportation.  Seller
               shall specify the delivery date and time of any such AOG Spare
               within two (2) hours of receipt of an AOG Spare request.

          B.   CRITICAL - means an imminent AOG work stoppage.  Seller will
               expend best efforts to provide the earliest possible delivery of
               any Spare designated Critical by Boeing. Such effort includes but
               is not limited to working two (2) shifts a day, five (5) days a
               week and use of premium transportation.  Seller shall specify the
               delivery date and time of any such Critical Spare within the same
               working day of receipt of a Critical Spare request.

          C.   EXPEDITE (CLASS I) - means a Spare required in less than Seller's
               normal leadtime.  Seller will expend best efforts to meet the
               requested delivery date.  Such effort includes but is not limited
               to working overtime and use of premium transportation.

          D.   ROUTINE (CLASS III) - means a Spare required in Seller's normal
               leadtime.

          E.   POA REQUIREMENT (POA) - means any detail component needed to
               replace a component on an End Item Assembly currently in Boeing's
               assembly line process.  Seller shall expend best efforts feasible
               to provide the earliest possible delivery of any Spare designated
               as POA by Boeing.  Such effort includes but is not limited to


                                          8



               working twenty-four (24) hours a day, seven days a week and use
               of premium transportation.  Seller shall specify the delivery
               date and time of any such POA within two (2) hours of an AOG
               Spare request.

          F.   IN-PRODUCTION - means any Spare with a designation of AOG,
               Critical, Expedite, Routine, POA or End Item Assembly which is
               in the current engineering configuration for the Product and is
               used on a model aircraft currently being manufactured by Boeing.

          G.   NON-PRODUCTION REQUIREMENTS - means any Spare with a designation
               of AOG, Critical, Expedite and Routine requirements which is used
               on model aircraft no longer being manufactured by Boeing (Post
               Production) or is in a non-current engineering configuration for
               the Product (Out of Production).

          H.   BOEING PROPRIETARY SPARE - means any Spare which is manufactured
               (i) by Boeing, or (ii) to Boeing's detailed designs with Boeing's
               authorization or (iii) in whole or in part using Boeing's
               Proprietary Materials.

13.1.1    SPARES SUPPORT
          Seller shall provide Boeing with a written Spares support process
          describing Seller's plan for supporting AOG and Critical commitments
          and manufacturing support.  The process must provide Boeing with the
          name and number of a twenty-four (24) hour contact for coordination 
          of AOG and Critical requirements.  Such contact shall be equivalent 
          to the coverage provided by Boeing to its Customers as outlined in 
          Attachment 4 "Boeing AOG Coverage" which is incorporated herein and 
          made a part hereof by this reference.

          Seller shall notify Boeing as soon as possible via fax, telecon, or as
          otherwise agreed to by the parties of each AOG and Critical
          requirement shipment using the form identified in Attachment 5 "Boeing
          AOG and Critical Shipping Notification".  Such notification shall
          include time and date shipped, quantity shipped, Order, pack slip,
          method of transportation and air bill if applicable.  Seller shall
          also notify Boeing immediately upon the discovery of any delays in
          shipment of any requirement and identify the earliest revised shipment
          possible.

13.1.2    RECLASSIFICATION OR RE-EXERCISES
          Boeing may on occasion, instruct Seller to re-prioritize or reclassify
          an existing requirement in order to improve or otherwise change the
          established shipping schedule.  Seller shall expend the effort
          required to meet the revised requirement as set forth above in the
          definitions of the requirements.  Seller's commitment of a delivery
          schedule shall be given in accordance with that set forth above for
          the applicable classification but in no case shall it exceed
          twenty-four (24) hours from notification by Boeing.

13.1.3    SPARE PRICING
          Pricing for SCD Spare(s), end item and details, shall be as set forth
          in the applicable Spares pricing catalog in effect at the time the
          Spare(s) are ordered.  Said pricing shall be fair and reasonable.

          The price for Boeing Proprietary Spare(s), end item and details, shall
          be the price for the Products as listed in Attachment 1, in effect at
          the time the Spare(s) are ordered.  POA parts shall be priced so that
          the sum of the prices for all POA parts of an End Item Assembly equals
          the applicable recurring portion of the End Item Assembly.


                                          9



13.1.4 SPECIAL HANDLING
       The price for all effort associated with the handling and delivery of
       Spare(s) is deemed to be included in the price for such Spare(s).
       Provided, that if Boeing directs delivery of Spares to an F.O.B. point
       other than Seller's plant, Boeing shall reimburse Seller for shipping
       charges, including insurance, paid by Seller from the plant to the
       designated F.O.B. point. Such charges shall be shown separately on all
       invoices.

13.2   SHORT FLOW PRODUCTION REQUIREMENTS
       Boeing shall pay no expedite charges for production requirements
       released less than Seller's current ROLT. Seller agrees to support
       Boeing's short flow requirements with its best effort.

14.0   STATUS REPORTS/REVIEWS
       When requested by Boeing, Seller shall update and submit, as a minimum,
       monthly status reports on data requested by Boeing using a method
       mutually agreed upon by Boeing and Seller.

       When requested by Boeing, Seller shall provide to Boeing a manufacturing
       milestone chart identifying the major purchasing, planning and
       manufacturing operations for the applicable Product(s).

       Upon request by Boeing, a program review may be held between the
       parties. The location of such review shall be mutually agreed to by the
       parties. The purpose of the review is to improve communication and
       understanding between the parties to ensure program success.

17.0   ASSIGNMENT
       Subject to the provisions of SBP, Section 25.0 below, Boeing and Seller
       agree that Boeing may, in its discretion, assign, in part or in whole,
       its purchasing obligations under the Agreement or any Order, as
       applicable, at the prices set forth in Attachment 1 thereof. Boeing
       reserves the right to rescind its assignment at anytime.

       Boeing's assignment of purchasing obligation includes scheduling,
       issuance of Order(s), receival and inspection of Products, acceptance or
       rejection of Products, payment for accepted Products, and ensuring
       conformance to the quality assurance system requirements.

       Boeing shall retain all other rights and obligations pursuant to the
       applicable terms and conditions. In addition, Boeing reserves the right,
       where necessary, to coordinate with and mediate between Seller and any
       assignee regarding such assignment.

                                     SCD SECTIONS

20.0   ADMINISTRATIVE AGREEMENTS
       The Administrative Agreement sets forth certain obligations of the
       parties relating to the administration of each Order, and such agreement
       is incorporated herein and made a part hereof by this reference.

21.0   GUARANTEED WEIGHT REQUIREMENTS
       Seller acknowledges the importance to Boeing of guaranteed weight
       requirements. Each Product shall strictly conform to the guaranteed
       weight requirement set forth in the


                                          10


       applicable Specification. If a Product fails to conform to such
       guaranteed weight requirement, Boeing may reject delivery of any such
       Product and take any other action as set forth in GTA Section 8.3, or
       any other remedy available to Boeing under this Agreement, any Order and
       applicable law.

22.0   SUPPLIER DATA REQUIREMENTS
       Supplier shall provide to Boeing the documents listed in Attachments 6
       and 7 hereto, which are incorporated herein and made a part hereof by
       this reference. Seller shall comply with the schedules listed in such
       Attachments.

24.0   SOFTWARE PROPRIETARY INFORMATION RIGHTS
       Seller hereby grants to Boeing a perpetual, nonexclusive, paid-up,
       worldwide license to reproduce, distribute copies of, perform publicly,
       display publicly, and make derivative works from software included in or
       provided with or for Products (Software) and related information and
       materials (Software Documentation) as reasonably required by Boeing in
       connection with (i) the testing, certification, use, sale, or support of
       a Product, or the manufacture, testing, certification, use, sale, or
       support of any aircraft including and/or utilizing a Product, or (ii)
       the design or acquisition of hardware or software intended to interface
       with Software. The license granted to Boeing under this Section 24.0,
       also includes the right to grant sublicenses to Customers as reasonably
       required in connection with Customers' operation, maintenance, overhaul,
       and modification of any aircraft including and/or utilizing Software.
       All copies and derivative works made pursuant to the foregoing license
       or any sublicense to a Customer will automatically become the property
       of Boeing or Customer, and Boeing agrees to preserve Seller's copyright
       notice thereon to the extent that such a notice was included with the
       original Software and/or Software Documentation. Seller acknowledges
       that Boeing is the owner of all Software and Software Documentation
       provided to or made by Boeing or Customers pursuant to the Agreement and
       this SBP and, Seller hereby authorizes Boeing and Customers to dispose
       of, and to authorize the disposal of, the possession of any and all
       Software by rental, lease or lending, or by any other act or practice in
       the nature of rental, lease, or lending.

EXECUTED in duplicate as of the date and year first set forth above by the duly
authorized representatives of the parties.

THE BOEING COMPANY                      PATS, Inc.
By and Through its Division
Boeing Commercial Airplane Group

Name:    /s/ [Illegible]                Name:  /s/ [Illegible]
      -----------------------------           -----------------------------
Title: Buyer                            Title: President
       ----------------------------            ----------------------------
Date: Feb. 17, 1998                     Date:  2/17/98
      -----------------------------           -----------------------------


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