空中交通服务术语

1.Aircraf t: Any machine that can derive support in the atmosphere from the reactions of the air

other than the reactions of the air against the earth’s surface.

2.Regional air navigation agreement: The phrase “regional air navigation agreement” refers

to an agreement approved by the council of ICAO normally on the advice of a Regional Air Navigation Meeting.

3.Air traffic service: A generic term meaning variously, flight information service, alerting

service, air traffic advisory service, air traffic control service (area control service, approach control service or aerodrome control service).

4.Visual flight rules (VFR): VFR are a set of regulations which allow a pilot to operate an

aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going. Specifically, the weather must be better than basic VFR weather minimums, as specified in the rules of the relevant aviation authority.

5.Instrument Flight Rules(IFR): IFR are regulations and procedures for flying aircraft whereby

navigation and obstacle clearance is maintained with referring only to the aircraft instrument only, pilot flying IFR is responsible for navigation, obstacle and traffic.

6.Movement area: The part of the an aerodrome to be used for the takeoff, landing and taxiing

of aircraft, consisting of maneuvering area and the aprons.

7.Pilot-in-command: The pilot who is designated by the operator and responsible for the

operation and safety of the aircraft during flight time.

8.Call sign：An aircraft call sign is a group of alphanumeric characters used to identify an

aircraft in air-ground communication.

9.Height: The vertical distance of a level, a point or an object considered as a point, measured

from a specified datum.

10.Appropriate authority: a) Regarding flight over the high seas: the relevant authority of the

State of Registry.

b) Regarding flight other than over the high seas: the

relevant authority of the State having sovereignty over

the territory being over-flown.

11.Cruising level: A level maintained during a significant portion of a flight.

12.Flight level: A surface of constant atmospheric pressure which is related to a specific pressure

datum, 1 013.2 hPa, and is separated from other such surfaces by specific pressure intervals.

Note 1.— A pressure type altimeter calibrated in accordance with the Standard Atmosphere:

a) when set to a QNH altimeter setting, will indicate altitude;

b) when set to QFE altimeter setting, will indicate height above the QFE reference

datum;

c) when set to a pressure of 1 013.2 hPa, may be used to indicate flight levels.

Note 2.—The terms “height” and “altitude”, used in Note 1 above, indicate altimetric rather than geometric heights and altitudes.

13.Transition altitude:The altitude at or below which the vertical position of an aircraft is

controlled by reference to altitudes.

14.Altitude: The vertical distance of a level, a point or an object considered as a point,