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**TABLE      OF      CONTENTS**

**Page**

| ARTICLE                I. | PURCHASE                AND                SALE  | 1 |
|---------------------------|-------------------------------------------------------|---|

|   | Section                1.1 | Agreement                to                Purchase and Sell  | 1 |
|--------|----------------------------|--------------------------------------------------------------------|---|

|   | Section                1.2 | Purchase                Price  | 2 |
|--------|----------------------------|-------------------------------------|---|

|   | Section                1.3 | Method                of                Payment  | 3 |
|--------|----------------------------|-------------------------------------------------------|---|

|   | ARTICLE                II.REPRESENTATIONS AND WARRANTIES REGARDING THE                SHAREHOLDERS3 |
|--------|-----------------------------------------------------------------------------------------------------|

|   | Section                2.1 | Organization;                Standing  | 3 |
|--------|----------------------------|---------------------------------------------|---|

|   | Section                2.2 | Authorization;                Noncontravention.  | 3 |
|--------|----------------------------|-------------------------------------------------------|---|

|   | Section                2.3 | Governmental                Approvals  | 4 |
|--------|----------------------------|---------------------------------------------|---|

|   | Section                2.4 | Ownership                of                Equity  | 4 |
|--------|----------------------------|---------------------------------------------------------|---|

|   | Section                2.5 | Legal                Proceedings  | 4 |
|--------|----------------------------|----------------------------------------|---|

|   | ARTICLE                III.REPRESENTATIONS AND WARRANTIES REGARDING THE                COMPANY4 |
|--------|-------------------------------------------------------------------------------------------------|

|   | Section                3.1 | Organization,                Standing and Corporate Power  | 4 |
|--------|----------------------------|-----------------------------------------------------------------|---|

|   | Section                3.2 | Capitalization  | 5 |
|--------|----------------------------|----------------------|---|

|   | Section                3.3 | Authorization                Noncontravention  | 6 |
|--------|----------------------------|-----------------------------------------------------|---|

|   | Section                3.4 | Governmental                Approvals  | 7 |
|--------|----------------------------|---------------------------------------------|---|

|   | Section                3.5 | Financial                Statements; Undisclosed Liabilities  | 7 |
|--------|----------------------------|--------------------------------------------------------------------|---|

|   | Section                3.6 | Absence                of                Certain Changes  | 8 |
|--------|----------------------------|----------------------------------------------------------------|---|

|   | Section                3.7 | Legal                Proceedings  | 10 |
|--------|----------------------------|----------------------------------------|----|

|   | Section                3.8 | Compliance                With Laws; Permits.  | 10 |
|--------|----------------------------|-----------------------------------------------------|----|

|   | Section                3.9 | Tax                Matters  | 11 |
|--------|----------------------------|----------------------------------|----|

|   | Section                3.10 | Employee                Benefits and Labor Matters.  | 11 |
|--------|-----------------------------|-----------------------------------------------------------|----|

|   | Section                3.11 | Environmental                Matters  | 13 |
|--------|-----------------------------|--------------------------------------------|----|

|   | Section                3.12 | Properties  | 14 |
|--------|-----------------------------|------------------|----|

|   | Section                3.13 | Insurance  | 15 |
|--------|-----------------------------|-----------------|----|

|   | Section                3.14 | Intellectual                Property  | 15 |
|--------|-----------------------------|--------------------------------------------|----|

|   | Section                3.15 | Contracts  | 16 |
|--------|-----------------------------|-----------------|----|

|   | Section                3.16 | Affiliate                Matters  | 18 |
|--------|-----------------------------|----------------------------------------|----|

|   | Section                3.17 | Brokers                and                Other Advisors  | 18 |
|--------|-----------------------------|----------------------------------------------------------------|----|

|   | Section                3.18 | Relations                with Governments.  | 18 |
|--------|-----------------------------|--------------------------------------------------|----|

|   | Section                3.19 | Customers                and                Suppliers.  | 20 |
|--------|-----------------------------|--------------------------------------------------------------|----|

|   | Section                3.20 | Government                Contracts  | 20 |
|--------|-----------------------------|-------------------------------------------|----|

|   | ARTICLE                IV.REPRESENTATIONS AND WARRANTIES OF THE                PURCHASER21 |
|--------|--------------------------------------------------------------------------------------------|

|   | Section                4.1 | Organization;                Standing  | 22 |
|--------|----------------------------|---------------------------------------------|----|

|   | Section                4.2 | Authority;                Noncontravention  | 22 |
|--------|----------------------------|--------------------------------------------------|----|

|   | Section                4.3 | Governmental                Approvals  | 22 |
|--------|----------------------------|---------------------------------------------|----|

|   | Section                4.4 | Capital                Resources  | 22 |
|--------|----------------------------|----------------------------------------|----|

|   | Section                4.5 | Brokers                and                Other Advisors  | 23 |
|--------|----------------------------|----------------------------------------------------------------|----|

|   | Section                4.6 | Ownership                of                Shares  | 23 |
|--------|----------------------------|---------------------------------------------------------|----|

|   | Section                4.7 | Investigation;                Acknowledgement  | 23 |
|--------|----------------------------|-----------------------------------------------------|----|

|   | ARTICLE                V.ADDITIONAL COVENANTS AND                AGREEMENTS24 |
|--------|-------------------------------------------------------------------------------|

|   | Section                5.1 | Conduct                of                Business  | 24 |
|--------|----------------------------|---------------------------------------------------------|----|

|   | Section                5.2 | No                Solicitation  | 28 |
|--------|----------------------------|--------------------------------------|----|

|   | Section                5.3 | Reasonable                Best Efforts.  | 28 |
|--------|----------------------------|-----------------------------------------------|----|

|   | Section                5.4 | Public                Announcements  | 29 |
|--------|----------------------------|-------------------------------------------|----|

|   | Section                5.5 | Access                to                Information; Confidentiality  | 30 |
|--------|----------------------------|----------------------------------------------------------------------------|----|

|   | Section                5.6 | Indemnification                and Insurance  | 30 |
|--------|----------------------------|----------------------------------------------------|----|

|   | Section                5.7 | Fees                and                Expenses  | 32 |
|--------|----------------------------|-------------------------------------------------------|----|

|   | Section                5.8 | Release  | 32 |
|--------|----------------------------|---------------|----|

|   | Section                5.9 | Merger  | 33 |
|--------|----------------------------|--------------|----|

|   | Section                5.10 | Service                Level                Amendments  | 33 |
|--------|-----------------------------|--------------------------------------------------------------|----|

|   | Section                5.11 | Financing  | 33 |
|--------|-----------------------------|-----------------|----|

|   | Section                5.12 | Payoff                Letters  | 34 |
|--------|-----------------------------|-------------------------------------|----|

|   | Section                5.13 | FIRPTA  | 35 |
|--------|-----------------------------|--------------|----|

|   | Section                5.14 | Operating                Leases  | 35 |
|--------|-----------------------------|---------------------------------------|----|

|   | Section                5.15 | Performance                Bonds  | 35 |
|--------|-----------------------------|----------------------------------------|----|

|   | Section                5.16 | Aeromobile  | 35 |
|--------|-----------------------------|------------------|----|

|   | Section                5.17 | International                Communications Licenses  | 35 |
|--------|-----------------------------|------------------------------------------------------------|----|

|   | ARTICLE                VI.CONDITIONS PRECEDENT36 |
|--------|--------------------------------------------------|

|   | Section                6.1 | Conditions                to                Each Party’s Obligation to Effect the Transactions  | 36 |
|--------|----------------------------|------------------------------------------------------------------------------------------------------------|----|

|   | Section                6.2 | Conditions                to                Obligations of the Purchaser  | 36 |
|--------|----------------------------|--------------------------------------------------------------------------------|----|

|   | Section                6.3 | Conditions                to                Obligations of the Shareholders and the Company  | 38 |
|--------|----------------------------|---------------------------------------------------------------------------------------------------|----|

|   | ARTICLE                VII.CLOSING38 |
|--------|--------------------------------------|

|   | Section                7.1 | Closing  | 38 |
|--------|----------------------------|---------------|----|

|   | Section                7.2 | Closing                Deliveries of the Shareholders and the Company  | 39 |
|--------|----------------------------|-----------------------------------------------------------------------------|----|

|   | Section                7.3 | The                Purchaser                Closing Deliveries  | 39 |
|--------|----------------------------|----------------------------------------------------------------------|----|

|   | ARTICLE                VIII.TERMINATION39 |
|--------|-------------------------------------------|

|   | Section                8.1 | Termination  | 39 |
|--------|----------------------------|-------------------|----|

|   | Section                8.2 | Effect                of                Termination  | 40 |
|--------|----------------------------|-----------------------------------------------------------|----|

|   | ARTICLE                IX.INDEMNIFICATION41 |
|--------|---------------------------------------------|

|   | Section                9.1 | Indemnification                Obligations of the Shareholders41 |
|--------|----------------------------|------------------------------------------------------------------|

|   | Section                9.2 | Indemnification                Procedure.  | 41 |
|--------|----------------------------|-------------------------------------------------|----|

|   | Section                9.3 | Survival                Period  | 42 |
|--------|----------------------------|--------------------------------------|----|

|   | Section                9.4 | Liability                Limits  | 42 |
|--------|----------------------------|---------------------------------------|----|

|   | Section                9.5 | Calculation                of Damages  | 43 |
|--------|----------------------------|---------------------------------------------|----|

|   | Section                9.6 | Exclusive                Remedy  | 43 |
|--------|----------------------------|---------------------------------------|----|

|   | Section                9.7 | Adjustments                to the Purchase Price  | 43 |
|--------|----------------------------|--------------------------------------------------------|----|

|   | ARTICLE                X.MISCELLANEOUS43 |
|--------|------------------------------------------|

|   | Section                10.1 | Survival                of                Representations, Warranties, Covenants and                Agreements  | 43 |
|--------|-----------------------------|----------------------------------------------------------------------------------------------------------------------|----|

|   | Section                10.2 | No                Other                Representations or Warranties  | 43 |
|--------|-----------------------------|----------------------------------------------------------------------------|----|

|   | Section                10.3 | Amendment                or                Supplement  | 44 |
|--------|-----------------------------|-------------------------------------------------------------|----|

|   | Section                10.4 | Extension                of                Time, Waiver, Etc  | 44 |
|--------|-----------------------------|--------------------------------------------------------------------|----|

|   | Section                10.5 | Assignment  | 44 |
|--------|-----------------------------|------------------|----|

|   | Section                10.6 | Counterparts  | 44 |
|--------|-----------------------------|--------------------|----|

|   | Section                10.7 | Entire                Agreement; No Third-Party Beneficiaries; No Recourse  | 44 |
|--------|-----------------------------|----------------------------------------------------------------------------------|----|

|   | Section                10.8 | Governing                Law  | 45 |
|--------|-----------------------------|------------------------------------|----|

|   | Section                10.9 | Dispute                Resolution  | 45 |
|--------|-----------------------------|-----------------------------------------|----|

|   | Section                  10.10 | Notices  | 45 |
|--------|--------------------------------|---------------|----|

|   | Section                  10.11 | Severability  | 48 |
|--------|--------------------------------|--------------------|----|

|   | Section                  10.12 | Definitions | 49 |
|--------|--------------------------------|-------------|----|

|   | Section                  10.13 | Rules                  of                  Interpretation  | 57 |
|--------|--------------------------------|-----------------------------------------------------------------|----|

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**STOCK      PURCHASE AGREEMENT**

**(b)**

Except      as would not reasonably be expected, individually or in the aggregate, to have      a      Material Adverse Effect, neither the Company nor any of its Subsidiaries nor,      to      the Knowledge of the Company, any Joint Venture nor any of their respective      officers, directors, employees, agents or representatives acting on their      behalf, has (i) used any funds for unlawful contributions, gifts, entertainment      or other unlawful expenses related to political activity, (ii) made any unlawful      payment or unlawfully offered anything of value to foreign or domestic      government officials or employees or to foreign or domestic political parties      or      campaigns, or (iii) violated any applicable export control, money laundering      or      anti-terrorism law or regulation, nor have any of them otherwise taken any      action which would cause the Company or any of its Subsidiaries to be in      violation of the Foreign Corrupt Practices Act of 1977, as amended (the “FCPA”),      OFAC Laws and Regulations, the Arms Export Control Act, the International      Traffic in Arms Regulations, the Foreign Trade Statistics Regulations or any      applicable Law of similar effect.

|   | If                to the                Purchaser or, following the Closing, the Company,                to: |
|--------|--------------------------------------------------------------------------------------------------------------|

|   | with                a copy                (which shall not constitute notice)                to: |
|--------|--------------------------------------------------------------------------------------------------|

|   | If                to                American, to: |
|--------|---------------------------------------------------|

|   | If                to                Continental, to: |
|--------|------------------------------------------------------|

|   | If                to Delta,                to: |
|--------|------------------------------------------------|

|   | If                to                Northwest, to: |
|--------|----------------------------------------------------|

|   | If                to United,                to: |
|--------|-------------------------------------------------|

|   | If                to US                Airways, to: |
|--------|-----------------------------------------------------|

|   | If,                prior to                the Closing, to the Company, to: |
|--------|-----------------------------------------------------------------------------|

|   | in                each case,                with a copy (which shall not constitute notice)                to: |
|--------|----------------------------------------------------------------------------------------------------------------|

**.**

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**RADIO      ACQUISITION CORP.**

**ARINC      INCORPORATED**

**AMERICAN      AIRLINES, INC.**

**CONTINENTAL      AIRLINES, INC.**

**DELTA      AIR      LINES, INC.**

**NORTHWEST      AIRLINES, INC.**

**UNITED      AIR      LINES, INC.**

**US      AIRWAYS,      INC.**

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