I have a ticket booked for next month on Air India. Hopefully, I can get my bags tagged all the way to my destination, but if not (separate tickets with UA and AI connecting in SFO), I'm planning on using my TSA Pre benefits to re-clear security. However, I cannot add either TTN or Redress on the Air India website. I tried calling and the agent was completely clueless on what to do. She later said it can't be done and to contact the ticketing airline (Turkish, because it was an award ticket) to get it done. AFAIK, TTN and Redress are dealt with by the operating carrier, so does any one know how to add these numbers to my itinerary record?