How to Add TSA Precheck to Turkish Airlines? To add TSA Precheck to your Turkish Airlines reservation, you need to follow a few steps. Firstly, ensure that you are eligible for the TSA Precheck program by being a U.S. citizen or a permanent resident with no criminal convictions and meeting other eligibility criteria as set by the Transportation Security Administration (TSA). Once confirmed, apply for TSA Precheck directly through the TSA website or visit an enrollment centre for in-person verification. After your successful application, you will receive a Known Traveller Number (KTN) which guarantees your access to expedited security screening lanes. To link your KTN to your Turkish Airlines reservation, visit their official website or contact their customer service team via phone or email and provide them with your KTN information.