Air canada tsa precheck because participant, qualified travelers can take advantage of accelerated security checks at American airports. Members of TSA PreCheck are allowed to leave laptops and liquids in their luggage and to keep on their belts, shoes, and light jackets. Passengers must input their Known Traveler Number when making a reservation or adding one to an already-existing one in order to utilize TSA PreCheck. You will then be able to use the allocated lanes because your boarding pass will have the TSA PreCheck emblem on it. Air Canada does not provide TSA PreCheck for flights that originate in Canada; it is only available for aircraft leaving from U.S. airports.