19 C.F.R. § 122.22 Notice of arrival.
Title 19 - Customs Duties
When arriving in the U.S. from a foreign area, all private aircraft not covered by §122.23 shall give advance notice of arrival as required in §122.31.
Title 19: Customs Duties
PART 122—AIR COMMERCE REGULATIONS
Subpart C—Private Aircraft
§ 122.22 Notice of arrival.