Rockwell Collins (COL)

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareowners of

Rockwell Collins, Inc.

We have audited the accompanying consolidated statement of financial position of Rockwell Collins, Inc. and subsidiaries (the “Company”) as of September 29, 2006 and September 30, 2005, and the related consolidated statements of operations, cash flows, and shareowners’ equity and comprehensive income for each of the three years in the period ended September 29, 2006. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company as of September 29, 2006 and September 30, 2005, and the consolidated results of its operations and its cash flows for each of the three years in the period ended September 29, 2006, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 13 to the consolidated financial statements as of October 1, 2005, the Company changed its method of accounting for employee stock-based compensation.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of the Company’s internal control over financial reporting as of September 29, 2006, based on the criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated November 1, 2006 expressed an unqualified opinion on management’s assessment of the effectiveness of the Company’s internal control over financial reporting and an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

/s/ Deloitte & Touche LLP

Minneapolis, Minnesota

November 1, 2006

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareowners of Rockwell Collins, Inc.

We have audited the consolidated financial statements of Rockwell Collins, Inc. and subsidiaries (the “Company”) as of September 29, 2006 and September 30, 2005, and for each of the three years in the period ended September 29, 2006, management’s assessment of the effectiveness of the Company’s internal control over financial reporting as of September 29, 2006, and the effectiveness of the Company’s internal control over financial reporting as of September 29, 2006, and have issued our reports thereon dated November 1, 2006 (which report on the consolidated financial statements expressed an unqualified opinion and included an explanatory paragraph regarding the Company’s change as of October 1, 2005, in its method of accounting for employee stock-based compensation); such consolidated financial statements and reports are included in your 2006 Annual Report to Shareowners and are incorporated herein by reference. Our audits also included the consolidated financial statement schedule of the Company, listed in Item 15(a)(2). This consolidated financial statement schedule is the responsibility of the Company’s management. Our responsibility is to express an opinion based on our audits. In our opinion, such consolidated financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

/s/ DELOITTE & TOUCHE LLP

Minneapolis, Minnesota

November 1, 2006

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareowners of Rockwell Collins, Inc.

We have audited the consolidated financial statements of Rockwell Collins, Inc. and subsidiaries (the “Company”) as of September 30, 2005 and October 1, 2004, and for each of the three years in the period ended September 30, 2005, management’s assessment of the effectiveness of the Company’s internal control over financial reporting as of September 30, 2005, and the effectiveness of the Company’s internal control over financial reporting as of September 30, 2005, and have issued our reports thereon dated November 4, 2005; such consolidated financial statements and reports are included in your 2005 Annual Report to Shareowners and are incorporated herein by reference. Our audits also included the consolidated financial statement schedule of the Company, listed in Item 15(a)(2). This consolidated financial statement schedule is the responsibility of the Company’s management. Our responsibility is to express an opinion based on our audits. In our opinion, such consolidated financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareowners of

Rockwell Collins, Inc.

We have audited the accompanying consolidated statement of financial position of Rockwell Collins, Inc. and subsidiaries (the “Company”) as of September 30, 2005 and October 1, 2004, and the related consolidated statements of operations, cash flows, and shareowners’ equity and comprehensive income (loss) for each of the three years in the period ended September 30, 2005. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company as of September 30, 2005 and October 1, 2004, and the consolidated results of its operations and its cash flows for each of the three years in the period ended September 30, 2005, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of the Company’s internal control over financial reporting as of September 30, 2005, based on the criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated November 4, 2005 expressed an unqualified opinion on management’s assessment of the effectiveness of the Company’s internal control over financial reporting and an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

/s/    DELOITTE & TOUCHE LLP

Chicago, Illinois

November 4, 2005

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