Twelve-Five program
The Twelve-Five Standard Security Program (TFSSP) is the TSA security regime for US charter operators flying aircraft with a maximum take-off weight above 12,500 lb, which covers most jets. Operators must check passengers against watch lists, verify identity, control access to the aircraft and follow written security procedures, but until 2025 they were not required to screen passengers or bags. Since July 2025 flights sold by the seat under Part 380 must screen passengers and carry-ons with TSA-approved equipment, which brought liquid limits and screening lanes to semi-private terminals. Conventional whole-aircraft charters still typically walk straight from the FBO lounge to the jet.