AIS.TR.350 Terrain and obstacle
data – General requirements
Commission Implementing Regulation (EU)
2020/469
The coverage areas for sets of terrain and obstacle data shall be specified as:
(a) Area 1: the entire territory of a Member State;
(b) Area 2: within the vicinity of an aerodrome, subdivided as follows:
(1) Area 2a: a rectangular area around a runway which comprises the runway strip plus any clearway that exists;
(2) Area 2b: an area extending from the ends of Area 2a in the direction of departure, with a length of 10 km and a splay of 15 % to each side;
(3) Area 2c: an area extending outside Areas 2a and 2b at a distance of not more than 10 km from the boundary of Area 2a; and
(4) Area 2d: an area outside Areas 2a, 2b and 2c up to a distance of 45 km from the aerodrome reference point, or to an existing terminal manoeuvring area (TMA) boundary, whichever is nearer;
(c) Area 3: the area bordering an aerodrome movement area which extends horizontally from the edge of a runway to 90 m from the runway centre line and 50 m from the edge of all other parts of the aerodrome movement area; and
(d) Area 4: the area extending 900 m prior to the runway threshold and 60 m to each side of the extended runway centre line in the direction of the approach on a precision approach runway, Category II or III.
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