Air Canada Tsa Precheck Using designated security lanes, packing laptops and liquids in their bags, and dressing in light coats, belts, and shoes are all part of the Air Canada Tsa Precheck process. Travelers must purchase their tickets through Air Canada and provide their Known Traveler Number (KTN) in order to be eligible for TSA PreCheck. Frequent travelers would benefit greatly from this service because it makes travel easier and more effective.