Air Canada TSA PreCheck By taking part in the TSA PreCheck program, Air Canada enables qualified travelers to get through security checks at American airports more quickly. After enrolling in TSA PreCheck, travelers can take advantage of expedited security inspections, leaving laptops and liquids in their carry-on baggage, and keeping on their shoes, belts, and light coats. Travelers must provide their Known Traveler Number (KTN) with their Air Canada reservation in order to take use of this service. TSA PreCheck makes traveling to the airport more efficient, which is perfect for frequent travelers who want to cut down on stress and save time.