<SEC-DOCUMENT>0001104659-15-019461-index.html : 20150313
<SEC-HEADER>0001104659-15-019461.hdr.sgml : 20150313
<ACCEPTANCE-DATETIME>20150313113741
ACCESSION NUMBER:		0001104659-15-019461
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20150310
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20150313
DATE AS OF CHANGE:		20150313

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TC PIPELINES LP
		CENTRAL INDEX KEY:			0001075607
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				522135448
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35358
		FILM NUMBER:		15698260

	BUSINESS ADDRESS:	
		STREET 1:		700 LOUISIANA STREET, SUITE 700
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002-2700
		BUSINESS PHONE:		(877) 290-2772

	MAIL ADDRESS:	
		STREET 1:		700 LOUISIANA STREET, SUITE 700
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002-2700
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a15-6327_48k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a15-6327_48k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.1
<SEQUENCE>2
<FILENAME>a15-6327_4ex1d1.htm
<DESCRIPTION>EX-1.1 UNDERWRITING AGREEMENT, DATED MARCH 10, 2015
<TEXT>
Document 2 - file: a15-6327_4ex1d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>3
<FILENAME>a15-6327_4ex4d1.htm
<DESCRIPTION>EX-4.1 SECOND SUPPLEMENTAL INDENTURE, DATED AS OF MARCH 13, 2015
<TEXT>
Document 3 - file: a15-6327_4ex4d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>a15-6327_4ex5d1.htm
<DESCRIPTION>EX-5.1 OPINION OF ORRICK, HERRINGTON & SUTCLIFFE LLP REGARDING THE LEGALITY OF THE NOTES.
<TEXT>
Document 4 - file: a15-6327_4ex5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g63274kmi001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g63274kmi001.jpg

</DOCUMENT>
</SEC-DOCUMENT>