AMC1 MET.TR.205(b)(1) Reporting of meteorological elements

• ED Decision 2022/004/R found in: ATM/ANS Provision of Services (2017/373) (Feb 2023)

AMC1 MET.TR.205(b)(1) Reporting of meteorological elements ED Decision 2022/004/R **VISIBILITY** In METAR and SPECI, visibility should be reported as prevailing visibility. When the visibility is not the same in different directions and: (a)       when the lowest visibility is different from the prevailing visibility, and (1) less than 1 500 m or (2) less than 50 % of the prevailing visibility, and less than 5 000 m, the lowest visibility observed should also be reported and, when possible, its general direction in relation to the aerodrome reference point indicated by reference to one of the eight points of the compass; (b)       if the lowest visibility is observed in more than one direction, then the most operationally significant direction should be reported; and (c)       when the visibility is fluctuating rapidly, and the prevailing visibility cannot be determined, only the lowest visibility should be reported, with no indication of direction. AMC1 MET.TR.205(b)(1) Reporting of meteorological elements ED Decision 2022/004/R **VISIBILITY** In METAR and SPECI, visibility should be reported as prevailing visibility. When the visibility is not the same in different directions and: (a) when the lowest visibility is different from the prevailing visibility, and (1) less than 1 500 m or (2) less than 50 % of the prevailing visibility, and less than 5 000 m, the lowest visibility observed should also be reported and, when possible, its general direction in relation to the aerodrome reference point indicated by reference to one of the eight points of the compass; (b) if the lowest visibility is observed in more than one direction, then the most operationally significant direction should be reported; and (c) when the visibility is fluctuating rapidly, and the prevailing visibility cannot be determined, only the lowest visibility should be reported, with no indication of direction.