<SEC-DOCUMENT>0001104659-15-036670-index.html : 20150511
<SEC-HEADER>0001104659-15-036670.hdr.sgml : 20150511
<ACCEPTANCE-DATETIME>20150511125612
ACCESSION NUMBER:		0001104659-15-036670
CONFORMED SUBMISSION TYPE:	F-X
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150511
DATE AS OF CHANGE:		20150511
EFFECTIVENESS DATE:		20150511

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRANSCANADA PIPELINES LTD
		CENTRAL INDEX KEY:			0000099070
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				522179728
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		F-X
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-203859-01
		FILM NUMBER:		15849768

	BUSINESS ADDRESS:	
		STREET 1:		450 -1ST STREET SW
		STREET 2:		P O BOX 1000 STATION M
		CITY:			CALGARY ALBERTA
		STATE:			A0
		ZIP:			T2P 5H1
		BUSINESS PHONE:		4039206411

	MAIL ADDRESS:	
		STREET 1:		450 I STREET SW
		CITY:			CALGARY ALBERTA
		STATE:			A0
		ZIP:			T2P 5H1

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CST Trust Co
		CENTRAL INDEX KEY:			0001641934
		IRS NUMBER:				473371144
		STATE OF INCORPORATION:			Z4
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		F-X

	BUSINESS ADDRESS:	
		STREET 1:		320 BAY STREET, 3RD. FL.
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5H 4A6
		BUSINESS PHONE:		416-682-3800

	MAIL ADDRESS:	
		STREET 1:		320 BAY STREET, 3RD. FL.
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5H 4A6
</SEC-HEADER>
<DOCUMENT>
<TYPE>F-X
<SEQUENCE>1
<FILENAME>a15-10085_7fx.htm
<DESCRIPTION>F-X
<TEXT>
Document 1 - file: a15-10085_7fx.htm

</DOCUMENT>
</SEC-DOCUMENT>