UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: August 12, 2019 10:00 A.M.
Form: F-10
CIK: 0001619767
Company Name: TransCanada Trust
File Number: 333-232968
CIK: 0000099070
Company Name: TRANSCANADA PIPELINES LTD
File Number: 333-232968-01