4.1.3 Notification of arrival must include:
4.1.3.1 Type of aircraft and registration number.
4.1.3.2 Name of aircraft commander.
4.1.3.3 Number of alien passengers.
4.1.3.4 Number of U.S. citizen passengers.
4.1.3.5 Place of last foreign departure.
4.1.3.6 Estimated time and location of crossing U.S. border/coastline.
4.1.3.7 Name of intended U.S. airport of first landing (designated airport).
4.1.3.8 Estimated time of arrival.
4.1.4 Private aircraft arriving from Canada or Mexico may request that advance notice of arrival to Customs officers be included in the flight plan to be transmitted to a Federal Aviation Administration (FAA) facility which is filed in those countries if destined to an airport in the U.S. where flight notification advise Customs (ADCUS) Service is available. An ADCUS message in the remarks section of the plan consists of the word ADCUS followed by the pilots name and the number of persons on board (POB) with a notation of the number of non.U.S. citizens (i.e.; ADCUS John Doe 5 POB 2 NON). This notification may be provided through FAA; however, this entails the relaying of informa-tion and is not as timely or reliable as direct communication. It is recommended that if possible, pilots attempt to communicate directly with Customs by telephone or other means to insure that an officer will be available at the time requested. It is the ultimate responsibility of the pilot to insure Customs is properly notified, and the failure to do so may subject the pilot to penalty action. At those airports where ADCUS service is available, the FAA will forward the ADCUS information to the Customs official on duty. At a landing rights airport such notices will then be treated as an application for permission to land. A flight plan notice must be filed sufficiently before the estimated time of arrival of the flight to permit Customs to make a determination as to whether or not to grant the requested landing rights.
4.1.5 Aircraft may use the following method of notifying Customs when departing from a country or remote area where a pre.departure flight plan cannot be filed or an advise Customs (ADCUS) message cannot be included in a pre.departure flight plan: Call the nearest en route domestic or international FAA flight service station as soon as it is estimated that radio communications can be established and file a VFR or DVFR flight plan and include as the last item the ADCUS information. The station with which such a flight plan is filed will forward it to the appropriate FAA station who will notify the Customs office responsible for the destination airport.
4.1.6 If the pilot fails to include “advise Customs” in the radioed flight plan, it will be assumed that the pilot has made other arrangements, and FAA will not advise Customs.
4.1.7 FAA assumes no responsibility for any delays in advising Customs if the flight plan is given to FAA too late for delivery to Customs before arrival of the aircraft. It is still the pilot’s responsibility to give timely notice even though a flight plan is given to FAA. FAA cannot relay an “advise Customs” flight plan if the pilot indicates a destination airport where flight service notice to Customs is NOT available. When dependable facilities for giving timely notice of arrival are not available, a landing shall be made at a place where the necessary facilities do exist before coming into any area from any place outside the U.S.
4.1.8 All private aircraft arriving in the U.S. via (a) the U.S./Mexican border or the Pacific Coast from a foreign place in the Western Hemisphere south of 33 degrees north latitude or (b) the Gulf of Mexico and Atlantic Coasts from a foreign place in the Western Hemisphere south of 30 degrees north latitude, from any place in Mexico, or from the U.S. Virgin Islands, shall furnish a notice of intended arrival to the Customs service at the nearest designated airport, listed in paragraph 6., to the point of first border or coastline crossing. They must land at this airport for inspection, unless they have an overflight exemption, see paragraph 4.5. Landing rights must be obtained from Customs to land at designated airports that are not also approved as international airports. The requirement to furnish an advance notice of intended arrival shall not apply to private aircraft departing from Puerto Rico and conducting their flights under instrument flight rules (IFR) until crossing the U.S. coastline or proceeding north of 30 degrees north latitude prior to crossing the coastline. The notice must be furnished at least one hour before crossing the U.S. coastline or border. The notice may be furnished directly to Customs by telephone, radio, or other means, or may be furnished by means of an ADCUS message in the flight plan through the FAA to Customs. The FAA will accept these notices up to 23 hours in advance.

4.1.9 A one.hour advance notice of coastline or border penetration (but not landing) is required of private aircraft arriving in the continental U.S. from Puerto Rico that are not conducting their flight on an IFR flight plan and those private aircraft that have flown beyond the inner boundary of the Air Defense Identification Zone (ADIZ) south of 30 degrees north latitude on the Atlantic Coast, beyond the inner boundary of the Gulf Coast ADIZ, south of the U.S./Mexican border, or beyond the inner boundary of the Pacific Coast ADIZ south of 33 degrees north latitude which have not landed in a foreign place. This notice requirement may be satisfied by either filing a flight plan with the FAA and placing ADCUS in the remarks section of the flight plan or by contacting Customs directly at least one hour prior to the inbound crossing of the U.S. border or coastline.
　
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