AIS.TR.360 Obstacle data sets

When obstacle data sets are provided in accordance with point AIS.OR.360:

(a)obstacle data items are features that shall be represented in the data sets by points, lines or polygons;

(b)all defined obstacle feature types shall be provided and each of them shall be described according to the following list of attributes:

(1)area of coverage;

(2)identification of the data originator;

(3)data source identifier;

(4)obstacle identifier;

(5)horizontal accuracy;

(6)horizontal confidence level;

(7)horizontal position;

(8)horizontal resolution;

(9)horizontal extent;

(10)horizontal reference system;

(11)elevation;

(12)vertical accuracy;

(13)vertical confidence level;

(14)vertical resolution;

(15)vertical reference system;

(16)obstacle type;

(17)geometry type;

(18)integrity;

(19)date and time stamp;

(20)unit of measurement used;

(21)lighting; and

(22)marking;

(c)obstacle data for Areas 2 and 3 shall be collected in accordance with the following obstacle collection surfaces:

(1)the Area 2a obstacle collection surface has a height of 3 m above the nearest runway elevation measured along the runway centre line, and for those portions related to a clearway, if one exists, at the elevation of the nearest runway end;

(2)the Area 2b obstacle collection surface has a 1,2 % slope extending from the ends of Area 2a at the elevation of the runway end in the direction of departure, with a length of 10 km and a splay of 15 % to each side; obstacles less than 3 m in height above the ground need not be collected;

(3)the Area 2c obstacle collection surface has a 1,2 % slope extending outside Areas 2a and 2b at a distance of not more than 10 km from the boundary of Area 2a; the initial elevation of Area 2c shall be the elevation of the point of Area 2a at which it commences; obstacles less than 15 m in height above the ground need not be collected;

(4)the Area 2d obstacle collection surface has a height of 100 m above the ground; and

(5)the Area 3 obstacle collection surface extends 0.5 m above the horizontal plane passing through the nearest point on the aerodrome movement area;

(d)in those portions of Area 2 where flight operations are prohibited due to very high terrain or other local restrictions and/or regulations, obstacle data shall be collected and recorded in accordance with the Area 1 numerical requirements;

(e)the obstacle data product specification, supported by geographical coordinates for each aerodrome included within the dataset, shall describe the following areas:

(1)Areas 2a, 2b, 2c and 2d;

(2)the take-off flight path area; and

(3)the obstacle limitation surfaces;

(f)obstacle data sets shall contain the digital representation of the vertical and horizontal extent of the obstacles; and

(g)obstacles shall not be included in terrain data sets.

Obstacle data collection surfaces – Area 1 and Area 2 [Figure or form omitted from this preview — available in the Avioverse workspace library.]