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FAA 13A

Summary

Creates obstacle identification surfaces (OIS) based on the FAA 13A specification. These surfaces describe airspaces that should be free of obstructions. Surfaces are used to support planning and design activities. The type, function, and dimension of a surface differ by runway classification.

Usage

  • The Input Runway Features parameter must be z-enabled.

  • This tool creates the OIS in an existing polygon or multipatch feature class. It can also be generated in an existing polygon shapefile. If a feature class is selected for Target OIS Features, it must have a vertical spatial reference.

Syntax

FAA13A_aviation (in_features, target, runway_type, {highend_clear_way_length}, {lowend_clear_way_length})
ParameterExplanationData Type
in_features

The input runway dataset. The feature class must be z-enabled and contain polylines.

Feature Layer
target

The target feature class that will contain the generated obstruction identification surfaces.

Feature Layer
runway_type

The classification of the runway.

  • SMALL_AIRPLANE_APPROACH_SPEEDS_LT_50 A runway designed for light aircraft with a maximum takeoff weight of less than 254 pounds and approach speed less than 50 knots. This is a visual runway only that can be used during the day or night.
  • SMALL_AIRPLANE_APPROACH_SPEEDS_GT_50A runway designed for light aircraft with a maximum takeoff weight of less than 1,320 pounds and approach speed more than 50 knots. This is a visual runway only that can be used during the day or night.
  • LARGE_AIRPLANE_INSTRUMENT_GT_1_MILE_VISIBILITY A runway designed for an aircraft with a maximum certified takeoff weight of more than 12,500 pounds. The approach end of the runway is expected to serve large airplanes as a visual runway available during the day or night, or an instrument approach with a minimum greater than one statute mile (1.6 KM) only during the day.
  • INSTRUMENT_CATEGORY_A_AND_B A runway designed for night operation with civil single-engine aircraft and twin-engine airplanes as well as those that reach 91 knots or greater but less than 121 knots. The approach end of the runway is expected to support instrument night operations and serve approach category A and B aircraft only.
  • INSTRUMENT_GT_CATEGORY_BA runway designed for night operation with aircraft that can travel at speeds of 121 knots or greater. The approach end of the runway is expected to support instrument night operations serving greater than approach category B aircraft.
  • INSTRUMENT_GT_3/4_MILE_LT_1_MILE_VISIBILITY A runway designed for an instrument approach procedure where the visibility is greater than three-fourths of a mile and less than one mile. The approach end of the runway is expected to accommodate instrument approaches with visible minimums more than three-fourths but less than 1 statute mile—more than 1.2 KM but less than 1.6 KM—during the day or night.
  • INSTRUMENT_LT_3/4_MILE_VISIBILITYA runway where the course and vertical path guidance are provided with visibility less than three-fourths of a mile. The approach end of this runway is expected to accommodate instrument approaches with visibility minimum less than three-fourths of a statute mile (1.2 KM) or precision approach (Instrument Landing System [ILS] or Global Navigation Satellite System [GNSS] Landing System [GLS]) day or night.
  • VERTICAL_GUIDANCE_APPROACHA runway that uses precision guidance systems to support aircraft approach and landing. The approach end of the runway is expected to accommodate approaches with vertical guidance such as a Glide Path Qualification Surface (GPQS).
  • DEPARTURE A runway that allows pilots to follow standard departure procedures.
String
highend_clear_way_length
(Optional)

The length of the area at the high end of the runway. The unit of measurement is based on the input runway features.

Double
lowend_clear_way_length
(Optional)

The length of the area at the low end of the runway. The unit of measurement is based on the input runway features.

Double

Code sample

FAA13A example (stand-alone script)

The following Python window script demonstrates how to use the FAA13A tool.

import arcpy

# set gp environment
arcpy.CheckOutExtension("Aeronautical")

# Input Runway Feature Class
inFeatures = r"C:\data\ois.gdb\RunwayCenterline"

# Feature class that will contain the OIS surface
outFeatures= r"C:\data\ois.gdb\ObstructionIdSurface"

# Airport variables
runway = "SMALL_AIRPLANES_APPROACH_SPEEDS_LT_50"
hiEndClearWay = 0
lowEndClearWay = 0

# Generate FAA13A OIS
arcpy.FAA13A_aviation(inFeatures,outFeatures, runway, hiEndClearWay, lowEndClearWay)

arcpy.CheckInExtension("Aeronautical")

Environments

Licensing information

  • ArcGIS Desktop Basic: No
  • ArcGIS Desktop Standard: Requires Aviation Airports
  • ArcGIS Desktop Advanced: Requires Aviation Airports

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