Habe nochmal gecheckt. Der zitierte Freund kennt offenbar nicht die Ausnahmen die von den TSA Requirements zugelassen sind. Ist schön auf einer Website von Flight Safety erläutert in welchen Fällen man das braucht:
https://www.flightsafety.com/tsa-requirements/
Auszug:
Non-US pilots receiving instruction in the following training activities, must apply to the Flight Student Security Program (FTSP), for obtaining TSA approval prior to simulator or aircraft training initiation.
Initial pilot certification (whether private, recreational, or a sport pilot certificate), which provides a pilot with basic piloting skills.
Instrument rating, which enhances a pilot’s abilities to pilot an aircraft in bad weather or at night and enables a pilot to better understand the instruments and physiological experiences of flying without reference to visual cues outside the aircraft.
Multi-engine rating, which provides a pilot with the skill to operate more complex, faster aircraft.
Type-rating, which is a specific certification a pilot obtains to operate a certain type of aircraft, because this training is required beyond the initial, multi-engine, and instrument certification.
Recurrent training for type-ratings, which is required to maintain or renew a type-rating already held by a pilot.
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Da Du einen PPL schon hast (sofern du dir eine neue FAA Validation holst) brauchst du keinerlei Training für INITIAL pilot qualification. Die Stunde "flight training" innerhalb eines BFR fällt nicht unter "initial pilot qualification". Entspricht wie gesagt auch meiner jüngsten Erfahrung in USA, dass danach für ein BFR keiner fragt...