# Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down common requirements for providers of air traffic management/air navigation services and other air traffic management network functions and their oversight, repealing Regulation (EC) No 482/2008, Implementing Regulations (EU) No 1034/2011, (EU) No 1035/2011 and (EU) 2016/1377 and amending Regulation (EU) No 677/2011 (Text with EEA relevance), Division: AIS.TR.350 Terrain and obstacle data – General requirements

Extent: E+W+S+N.I.

The coverage areas for sets of terrain and obstacle data shall be specified as:
(a)Area 1: the entire territory of a 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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Source: https://www.legislation.gov.uk/eur/2017/373/annex/VI/division/2/division/Chapter/division/4n1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-373/annex-VI/division-2/division-Chapter/division-4n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.