Log in to your American Airlines account
Go to your AAdvantage profile
Select “Travel information” or “Known Traveler Number”
Enter your TSA PreCheck Known Traveler Number
Save your profile changes
Add your KTN to each flight reservation
Make sure your name matches exactly on your TSA PreCheck enrollment and American Airlines booking
Check your boarding pass for the TSA PreCheck indicator
If needed, contact American Airlines reservations to add your KTN
Renew your TSA PreCheck membership before it expires