19 C.F.R. § 122.41 Aircraft required to enter.
Title 19 - Customs Duties
All aircraft coming into the United States from a foreign area must make entry under this subpart except: (a) Public and private aircraft; (b) Aircraft chartered by, and transporting only cargo that is the property of, the U.S. Department of Defense (DoD), where the DoD-chartered aircraft is manned entirely by the civilian crew of the air carrier under contract to DoD; and (c) Aircraft traveling from airport to airport in the U.S. under subpart I, relating to residue cargo procedures. [T.D. 88–12, 53 FR 9292, Mar. 22, 1988, as amended by CBP Dec. 03–32, 68 FR 68170, Dec. 5, 2003]
Title 19: Customs Duties
PART 122—AIR COMMERCE REGULATIONS
Subpart E—Aircraft Entry and Entry Documents; Electronic Manifest Requirements for Passengers, Crew Members, and Non-Crew Members Onboard Commercial Aircraft Arriving In, Continuing Within, and Overflying the United States
§ 122.41 Aircraft required to enter.