Exhibit 32.2

CERTIFICATION BY CHIEF FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Rockwell Collins, Inc. (the “Company”) on Form 10-K for the fiscal year ended September 30, 2004 (the “Report”) filed with the Securities and Exchange Commission, I, Lawrence A. Erickson, Senior Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Company’s Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: December 8, 2004	/s/ Lawrence A. Erickson
	Lawrence A. Erickson
	Senior Vice President and
	Chief Financial Officer