Code of Federal Regulations Title 19. Customs Duties § 19.122.174 Operational procedures

(i) Perform a thorough internal and external search of the arriving aircraft;

(ii) Maintain total control of all passengers and cargo being discharged from the aircraft to either the Customs passenger hall or to the carrier's cargo facility;

(iii) Verify that all cargo on aircraft is properly manifested, marked and weighed and that piece counts are properly performed;  and

(iv) Maintain physical security of the aircraft and ramp access to the aircraft while it is being offloaded.

(i) Perform a thorough internal and external search of the departing aircraft;

(ii) Maintain total control of all passengers and cargo being loaded on the aircraft from either the passenger terminal or the carrier's cargo facility;

(iii) Verify that all cargo placed on the aircraft is properly manifested, marked and weighed and that piece counts are properly performed;

(iv) Maintain physical security of the aircraft and ramp access to the aircraft while it is being loaded;  and

(v) Maintain similar positive security measures at all foreign intermediate airports prior to the arrival of the aircraft at an ACSPP designated airport.