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Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
My guess is that when you booked the tickets, using the FF number was a way to skip entering certain information, such at what's needed for secure flight. If USA flights are involved, I'd expect that this glitch would prevent someone from getting TSA PreCheck.