ICAO Annex 15 (Aeronautical)

Summary

Creates obstruction identification surfaces based on the ICAO Annex 15 specification. These surfaces define areas of airspace around an aerodrome. Each area defines the limits to which an obstruction may project into an airspace. This tool creates surfaces as polygon or multipatch features, or triangulated irregular networks (TINs).

Usage

• The Input Runway Features must be Z enabled.

• The selection you make in Runway Classification will automatically populate most of the surface parameters. You can modify these preset values, but the generated geometry may not be valid. Default and preset values are defined from obstruction standards for civil airport imaginary surfaces.

• Changing Distance Unit and Angular Unit will recompute surface parameter values.

• This tool does not create the Output Feature Class. You can specify the ObstacleArea feature class in the AIS data model or the ObstructionIdSurface feature class from the Airports data model as the Output Feature Class. If you have set a production database, you can find ObstacleArea or ObstructionIdSurface in it. The Output Feature Class must exist, be Z enabled, and have the same geometry type and fields as the ObstacleArea or ObstructionIdSurface feature classes.

• The Output Feature Class must have a vertical spatial reference.

Syntax

ICAOAnnex15_aeronautical (in_features, out_featureclass, clear_way_length, runway_type, use_predefined_database_specification, ois_unit, ois_slope, create_surface, {primary_surface_length}, {primary_surface_width}, {approach_divergence}, {first_section_length}, {first_section_slope}, {conical_surface_slope}, {conical_surface_offset})

Parameter	Explanation	Data Type
in_features	The input runway dataset. The feature class must be Z enabled and contain polylines.	Feature Layer
out_featureclass	The output feature class or TIN that will contain the generated obstacle identification surfaces.	Feature Layer; TIN
clear_way_length	The length of the area at the end of the take-off run. An aircraft can make a portion of its initial climb over this area.	Double
runway_type	Runway type. The default is eTod.	String
use_predefined_database_specification	Indicates if the tool will use default parameter values. If in_features or out_featureclass are stored in a production database, default parameter values are read from that database. If neither are stored in a production database, the tool supplies default parameter values. Parameter values differ by specific runway type. PREDEFINED_SPECIFICATION —Use default values for all subsequent parameter values. Ignore any input values for all subsequent parameters. CUSTOM_SPECIFICATION —Use input parameter values from the tool user interface.	Boolean
ois_unit	The runway length linear unit of measurement. METERS —Runway length is in meters. FEET —Runway length is in feet. This is the default.	String
ois_slope	Angular unit of measurement for slope values. PERCENT_RISE —Slope angle is expressed as a grade (inclination) in percent. DEGREE —Slope angle is expressed in degrees. SLOPE —Slope angle is expressed as X units of run per 1 vertical unit. This is the default.	String
create_surface [create_surface,...]	Indicates types of surfaces to create. Used only if use_predefined_database_specification is set to CUSTOM_SPECIFICATION. PRIMARY_SURFACE —An imaginary surface longitudinally centered on a runway. APPROACH_SURFACE —A surface that extends outward and upward from each end of the primary surface. CONICAL_SURFACE —A conical surface that extends outward and upward from the periphery of the horizontal surface.	String
primary_surface_length (Optional)	Primary surface length excluding the length of the runway.	Double
primary_surface_width (Optional)	Primary surface width excluding the width of the runway.	Double
approach_divergence (Optional)	The rate of divergence of two sides that originate from the approach surface's inner edge.	Double
first_section_length (Optional)	The length of the first section of the approach surface.	Double
first_section_slope (Optional)	The slope of the first section of the approach surface.	Double
conical_surface_slope (Optional)	The slope value of the conical surface. The default value is 1.2 percent.	Double
conical_surface_offset (Optional)	The distance from the edge of the primary surface to the outer edge of the conical surface. This value defaults to 10 kilometers.	Double

Code Sample

ICAOAnnex15 example (Python window)

The following Python window script demonstrates how to use the ICAOAnnex15 tool.

# Input Runway Feature Class
inFeatures = r'C:\data\OIS.gdb\ADHPSurfaceLine'

# production workspace
inWork = r'C:\data\OIS.gdb'

# feature class that will contain the OIS surface
outFeatureClass=r'C:\data\OIS.gdb\ObstacleArea'

# exec ICAOAnnex15
arcpy.ICAOAnnex15_aeronautical(inFeatures,inWork,outFeatureClass,0,"eTOD","PREDEFINED_SPECIFICATION")

Environments

Current Workspace

Licensing Information

ArcGIS for Desktop Basic: No

ArcGIS for Desktop Standard: Requires Airports or Aeronautical

ArcGIS for Desktop Advanced: Requires Airports or Aeronautical