19 C.F.R. § 122.32 Aircraft required to land.
Title 19 - Customs Duties
Any aircraft coming into the U.S., including Puerto Rico, from an area outside the U.S., is required to land, unless exempted by the Federal Aviation Administration.
Title 19: Customs Duties
PART 122—AIR COMMERCE REGULATIONS
Subpart D—Landing Requirements
§ 122.32 Aircraft required to land.