![](https://static.wixstatic.com/media/4f5214_1c71164be8c54d609b966af5f3dc9c08~mv2.jpg/v1/fill/w_1920,h_1920,al_c,q_90,usm_0.66_1.00_0.01,enc_avif,quality_auto/4f5214_1c71164be8c54d609b966af5f3dc9c08~mv2.jpg)
OLS
Annex 14th
Volume 1
![Tables.png](https://static.wixstatic.com/media/4f5214_56d7f10453b0435281d9024237bd90c4~mv2.png/v1/fill/w_618,h_348,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/Tables.png)
We use the data from annex 14th ICAO and the Chapter 4th
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Table 4-1
Table 4-2
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Approach
transitional and take off surfaces
![wizard1.png](https://static.wixstatic.com/media/4f5214_cbb99209d6d84576b4ee848c047bbfad~mv2.png/v1/crop/x_172,y_47,w_962,h_582/fill/w_613,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/wizard1.png)
With this wizard you fill in the data:
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ICAO NUMBER for you RWY
Aerodrome Altitude ft
THR ft
THR opposite ft
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Precision (check also instrumental)
Instrumental (only check instrumental)
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Visual no check any.
Horizontal Inner and conical
![wizard2.png](https://static.wixstatic.com/media/4f5214_aa025d762f854c4fb1a1db6352a167b1~mv2.png/v1/crop/x_137,y_24,w_1050,h_635/fill/w_613,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/wizard2.png)
With this wizard you fill in the data:
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ICAO NUMBER for you RWY
Aerodrome Altitude ft
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Precision (check also instrumental)
Instrumental (only check instrumental)
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Visual no check any.
Obstacle Free zone surfaces Precision
![wizard3.png](https://static.wixstatic.com/media/4f5214_c994bf934d5b457a8209663d2738c538~mv2.png/v1/crop/x_168,y_74,w_941,h_570/fill/w_612,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/wizard3.png)
With this wizard you fill in the data:
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ICAO NUMBER for you RWY
Aerodrome Altitude ft
THR ft
Balked ft (by default the distance is 1800 m)
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Only for precision
OLS
![imagen1.png](https://static.wixstatic.com/media/4f5214_4f9d886c248c41ba86ae9bf04cd7eeb5~mv2.png/v1/crop/x_200,y_94,w_878,h_530/fill/w_615,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/imagen1.png)
Example ICAO Number 4
Precision
conical
Horizontal Inner
take-off
transitional
OFZ surfaces
![imagen2.png](https://static.wixstatic.com/media/4f5214_1bd227f3ea6a44c299054a818c6ee1c7~mv2.png/v1/crop/x_209,y_99,w_861,h_520/fill/w_614,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/imagen2.png)
Example ICAO Number 4
inner transitional
Balked landing surface
Inner Approach
Analysis Obstacle
![analysis.png](https://static.wixstatic.com/media/4f5214_4c0d194e0bc64ab694cb5e40b4f18c8a~mv2.png/v1/crop/x_232,y_113,w_815,h_493/fill/w_613,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/analysis.png)
You can analyze obstacle of any area with generic.
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And for the conical we created a new one.
KML
![KML.png](https://static.wixstatic.com/media/4f5214_62fcd0856bbf4b52a248c6392c02b63d~mv2.png/v1/crop/x_142,y_72,w_1278,h_773/fill/w_613,h_371,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/KML.png)
As any area you can export that area to KML.
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First select all the oas area
then Click
BasicOperation
Convert to KML
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And you get the KML in the folder of KML of the program
My Files / Documents / AirNavCAD / KML