单选题 The flight plan as filed with an ATS unit by the pilot or his designated representative, without any subsequent changes.

单选题 A power-driven heavier-than-air aircraft, derivingitslift in flight chiefly from aerodynamic reactions on surfaceswhich remain fixed under given conditions of flight.

单选题 A publication issued by or with the authority of a State and containing aeronautical information of a lasting character essential to air navigation.

单选题 A unit established for the purpose of receiving reports concerning air traffic services and flight plans submitted before departure.

单选题 The pilot responsible for the operation and safety of the aircraft during flight time.

单选题 A group of alphanumeric characters used to identify an aircraft in air-ground communication.

单选题 A group of letters， figures or a combination thereof which is either identical to， or the coded equivalent of， the aircraft call sign to be used in air - ground communications，and which is used to identify the aircraft in ground - ground air traffic services communications.

单选题 An office designated by a State for the exchange of NOTAM internationally.