N.Y. Gen. Bus. Law § 243
The public safety requiring, and the advantages of uniform regulation making it desirable, in the interest of aeronautical progress, that aircraft to be avigated within this state should conform, with respect to design, construction and airworthiness, to standards prescribed by the United States government with respect to avigation of aircraft subject to its jurisdiction, it shall be unlawful for any person to avigate an aircraft within this state unless it is licensed and registered by the department of transportation of the United States in the manner prescribed by the lawful rules and regulations of the United States government then in force. The license for such aircraft must be carried and conspicuously posted in the aircraft while in flight. Such license also shall be presented for inspection, on demand, to any peace officer, acting pursuant to his special duties, or police officer, or to any official, manager or person in charge of an airport or landing place where the aircraft may be. The provisions of this section shall not apply to aircraft used exclusively in the governmental service of the United States, or used exclusively in the service of the national guard or of one or more of the civil departments of this state.
N.Y. Gen. Bus. Law § 243