SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2004 COMMISSION FILE No. 1-8887 TRANSCANADA PIPELINES LIMITED (TRANSLATION OF REGISTRANT'S NAME INTO ENGLISH) 450 - 1 STREET S.W., CALGARY, ALBERTA, T2P 5H1, CANADA (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F Form 20-F Form 40-F X ------------- -------------- Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes No X ------------- -------------- I The documents listed below in this Section and filed as Exhibits 1 to 4 to this Form 6-K are hereby filed with the Securities and Exchange Commission for the purpose of being and hereby are incorporated by reference in Post-Effective Amendment No. 1 on Form F-9 to Registration Statement (Reg. No. 333-101140) on Form F-10 under the Securities Act of 1933, as amended. 1 Management's Discussion and Analysis of Financial Condition and Results of Operations of the registrant as at and for the period ended March 31, 2004. 2 Consolidated comparative interim unaudited financial statements of the registrant for the period ended March 31, 2004 (included in the registrant's First Quarter 2004 Quarterly Report). 3 Schedule of earnings coverage calculations at March 31, 2004. 4 U.S. GAAP reconciliation of the consolidated comparative interim unaudited financial statements of the registrant contained in the registrant's First Quarter 2004 Quarterly Report. II The document listed below in this Section and in the Exhibit Index to this Form 6-K is hereby filed with the Securities and Exchange Commission. 5 Comfort letter of KPMG LLP dated April 28, 2004. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. TRANSCANADA PIPELINES LIMITED By: /s/ Russell K. Girling ------------------------------------------ Russell K. Girling Executive Vice-President, Corporate Development and Chief Financial Officer By: /s/ Lee G. Hobbs ------------------------------------------ Lee G. Hobbs Vice-President and Controller April 28, 2004 EXHIBIT INDEX 1 Management's Discussion and Analysis of Financial Condition and Results of Operations of the registrant as at and for the period ended March 31, 2004. 2 Consolidated comparative interim unaudited financial statements of the registrant for the period ended March 31, 2004 (included in the registrant's First Quarter 2004 Quarterly Report). 3 Schedule of earnings coverage calculations at March 31, 2004. 4 U.S. GAAP reconciliation of the consolidated comparative interim unaudited financial statements of the registrant contained in the registrant's First Quarter 2004 Quarterly Report. 5 Comfort letter of KPMG LLP dated April 28, 2004. 6 Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 7 Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 8 Certification of Chief Executive Officer regarding Periodic Report containing Financial Statements. 9 Certification of Chief Financial Officer regarding Periodic Report containing Financial Statements.