FAA Federal Aviation Regulations (FARS, 14 CFR)

(a) No aircraft operator may use any person as a Ground Security Coordinator unless, within the preceding 12-calendar months, that person has satisfactorily completed the security training as specified in the aircraft operator's security program.

(b) No aircraft operator may use any person as an in-flight security coordinator or crewmember on any domestic or international flight unless, within the preceding 12-calendar months or within the time period specified in an Advanced Qualifications Program approved under SFAR 58, that person has satisfactorily completed the security training required by §121.417(b)(3)(v) or §135.331(b)(3)(v) of this chapter, and as specified in the aircraft operator's security program.

(c) With respect to training conducted under this section, whenever a person completes recurrent training within one calendar month earlier, or one calendar month after the date it was required, that person is considered to have completed the training in the calendar month in which it was required.