GM1 ATS.TR.305(a);(b);(c) Scope of
flight information service
ED Decision 2020/008/R
INFORMATION
TO AIRCRAFT BY AFIS UNITS — AERODROME AND METEOROLOGICAL INFORMATION
(a) Prior to taxiing for take-off, the AFIS unit should advise aircraft of the following elements of information, in the order listed, with the exception of such elements which are known to have been already received by the aircraft:
(1) the runway-in-use;
(2) the surface wind direction and speed, including significant variations therefrom;
(3) the QNH altimeter setting and, either on a regular basis in accordance with local arrangements or if so requested by the aircraft, the QFE altimeter setting;
(4) the air temperature for the runway-in-use, in the case of turbine-engined aircraft;
(5) the visibility representative of the direction of take-off and initial climb, if less than 10 km, or, when applicable, the RVR value(s) for the runway-in-use; and
(6) the correct time.
(b) Prior to take-off, the AFIS unit should advise aircraft of:
(1) any significant changes in the surface wind direction and speed, the air temperature, and the visibility or RVR value(s) given in accordance with point (a); and
(2) significant meteorological conditions in the take-off and climb-out area, except when it is known that the information has already been received by the aircraft. ‘Significant meteorological conditions’ in this context include the occurrence or expected occurrence of cumulonimbus or thunderstorm, moderate or severe turbulence, wind shear, hail, moderate or severe icing, severe squall line, freezing precipitation, severe mountain waves, sandstorm, dust storm, blowing snow, tornado or waterspout in the take-off and climb-out area.
AFIS units must provide aircraft with essential aerodrome and weather information before taxiing and takeoff. This includes runway in use, wind, QNH/QFE, temperature (turbine aircraft), visibility/RVR, and time. Updates on wind, temperature, visibility, and significant weather conditions affecting takeoff and climb-out are also required.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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