form6ktcpl04212010.htm


 
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 2010
 
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
þ

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨
 
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨
 
Exhibit 99.1 to this report, furnished on Form 6-K, is furnished, not filed, and will not be incorporated by reference into any registration statement filed by the registrant under the Securities Act of 1933, as amended.
 
 

 
 

 


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.
 
Date: April 21, 2010

 
TRANSCANADA PIPELINES LIMITED
     
     
     
 
By:
/s/ Donald J. DeGrandis
   
Donald J. DeGrandis
   
Corporate Secretary


 
 

 

 
EXHIBIT INDEX
 
 
  99.1
Material Change Report of the Registrant dated April 21, 2010.