Orbital Corporation Limited (OBTEF) 20-F 2004 FY Annual report (foreign)

Exbibit 13.1

CERTIFICATION PURSUANT TO SECTION 906

OF SARBANES-OXLEY ACT OF 2002

(Subsections (a) and (b) of Section 1350,

Chapter 63 of Title 18, United States Code)

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Orbital Corporation Limited, a public company incorporated in Australia (the “Company”), hereby certifies that:

The Annual Report on Form 20-F for the year ended June 30, 2004 (the “Report”) of the Company fully complies with the requirements of section 13(a) and 15(d) of the Securities Exchange Act of 1934 and information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: December 30, 2004
	/s/    P C COOK
Name:	Peter Chapman Cook
Title:	Managing Director and Chief Executive Officer