Division AIS.TR.360 Obstacle data setsF1

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

1. (a)

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

2. (b)

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

   1. (1)

      area of coverage;

   2. (2)

      identification of the data originator;

   3. (3)

      data source identifier;

   4. (4)

      obstacle identifier;

   5. (5)

      horizontal accuracy;

   6. (6)

      horizontal confidence level;

   7. (7)

      horizontal position;

   8. (8)

      horizontal resolution;

   9. (9)

      horizontal extent;

   10. (10)

       horizontal reference system;

   11. (11)

       elevation;

   12. (12)

       vertical accuracy;

   13. (13)

       vertical confidence level;

   14. (14)

       vertical resolution;

   15. (15)

       vertical reference system;

   16. (16)

       obstacle type;

   17. (17)

       geometry type;

   18. (18)

       integrity;

   19. (19)

       date and time stamp;

   20. (20)

       unit of measurement used;

   21. (21)

       lighting; and

   22. (22)

       marking;

3. (c)

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

   1. (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. (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. (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. (4)

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

   5. (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;

4. (d)

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

5. (e)

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

   1. (1)

      Areas 2a, 2b, 2c and 2d;

   2. (2)

      the take-off flight path area; and

   3. (3)

      the obstacle limitation surfaces;

6. (f)

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

7. (g)

   obstacles shall not be included in terrain data sets.

The following diagram contains a graphical illustration of Area 1 and Area 2 obstacle data collection surfaces and criteria used to identify obstacles in Area 2.

Obstacle data collection surfaces – Area 1 and Area 2