(a) At airports within the United States not governed by part 1542 of this chapter, each foreign air carrier engaging in public charter passenger operations must—

(1) When using a screening system required by § 1546.101(a), (b), or (c), provide for law enforcement officers meeting the qualifications and standards, and in the number and manner, specified in part 1542; and

(2) When using an airplane having a passenger seating configuration of 31 or more but 60 or fewer seats for which a screening system is not required by § 1546.101(a), (b), or (c), arrange for law enforcement officers meeting the qualifications and standards specified in part 1542 of this chapter to be available to respond to an incident and provide to appropriate employees, including crewmembers, current information with respect to procedures for obtaining law enforcement assistance at that airport.

(b) At airports governed by part 1542 of this chapter, each foreign air carrier engaging in scheduled passenger operations or public charter passenger operations when using an airplane with a passenger seating configuration of 31 or more and 60 or fewer seats under § 1546.101(c), must arrange for law enforcement personnel meeting the qualifications and standards specified in part 1542 of this chapter to be available to respond to an incident and provide to appropriate employees, including crewmembers, current information with respect to procedures for obtaining law enforcement assistance at that airport.