20260223
08483100
1.0
ISO19115_3
002
SRK_Flight_Hazards_Routes
29.179796
32.521034
-30.991316
-26.855140
1
Geographic
GCS_Hartebeesthoek_1994
Angular Unit: Degree (0.017453)
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20260306
09284000
FALSE
20260306
09284000
<div style="font-family:'Segoe UI';font-size:14px;font-style:normal;font-weight:400;line-height:20px;"><p>The dataset represents provincial‑scale aircraft‑movement hazard by combining:</p><ul><li><strong>Flight‑path hierarchy</strong> (commercial airways, regional routes, GA paths, helicopter corridors)</li><li><strong>Airport control zones and approach/departure paths</strong></li><li><strong>Terrain and elevation modifiers</strong> affecting flight safety margins</li><li><strong>Air‑route buffer zones</strong> representing operational envelopes</li></ul><h3><strong>Hazard Weighting</strong></h3><p>A 10‑to‑1 hazard‑ranking system was applied:</p><ul><li><strong>10:</strong> Primary commercial corridors, major approach cones, controlled airspace (CTR)</li><li><strong>7–9:</strong> Regional routes, controlled low‑altitude corridors</li><li><strong>4–6:</strong> General aviation flight paths, helicopter routes</li><li><strong>1–3:</strong> Low‑probability fly‑over areas</li></ul><p>Weights reflect aircraft density, aircraft type, altitude, complexity of maneuvers, and potential ground‑exposure risk.</p><h3><strong>Processing Approach</strong></h3><ol><li>All flight‑path datasets were merged into a unified aviation‑movement layer.</li><li>Hazard ranks were assigned per route class.</li><li>Terrain‑based modifiers increased hazard in areas where elevation imposes operational constraints.</li><li>Control‑zone buffers were integrated to represent high‑risk airport operations.</li></ol><h3><strong>Purpose</strong></h3><p>Supports:</p><ul><li>Aviation‑related disaster management</li><li>Strategic risk identification</li><li>Early‑warning planning</li><li>Airport safety‑zone delineation</li><li>Provincial‑level transport‑risk modelling</li></ul><p>The layer represents <strong>relative hazard</strong>, not observed aviation‑incident frequency.</p></div>
SRK_Flight_Hazards_Routes
2025-12-15T12:00:00
28.663330
33.035889
-26.765231
-31.165810
0.000000
0.000000
aircraft hazard
flight routes
aviation exposure
KwaZulu‑Natal
controlled airspace
airport control zone
flight corridor
elevation hazard
disaster risk assessment
This dataset identifies hazard levels associated with aircraft flight routes across KwaZulu‑Natal. It integrates weighted air‑route classifications, airport influence zones, and elevation‑based risk modifiers to quantify spatial variations in aviation‑related hazard. Corridor‑level hazard ranks (1–10) were applied to commercial, regional, general‑aviation, and helicopter flight paths.
SRK Consulting
Creator: Herman Booysen (hbooysen@srk.co.za)
Aviation Hazard Analysis: SRK Consulting
Supplementary Inputs: Flight‑route datasets, airport control‑zone boundaries, DEM (elevation)
<div style="font-family:'Segoe UI';font-size:14px;font-style:normal;font-weight:400;line-height:20px;"><ul><li>Intended for <strong>strategic, high‑level hazard assessment</strong>.</li><li>Hazard values reflect <strong>relative exposure</strong>, not actual aircraft‑incident data.</li><li>Dependent on the accuracy of airspace datasets and DEM resolution.</li><li>Not suitable for operational flight‑safety or air‑traffic control decisions.</li></ul></div>
Esri ArcGIS 13.6.0.59527
1
29.179796
32.521034
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dataset
20260306
Enterprise Geodatabase Feature Class
EPSG
6.2(3.0.1)
SRK_Flight_Hazards_Routes
Feature Class
0
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
8
0
0
Feature geometry.
Esri
Coordinates defining the features.
Name
Name
String
320
0
0
FolderPath
FolderPath
String
320
0
0
Base
Base
Double
8
38
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Clamped
Clamped
SmallInteger
2
5
0
Extruded
Extruded
SmallInteger
2
5
0
Importance_Rank
Importance Rank
Integer
4
10
0
A numerical value representing the relative hazard importance of each flight route based on air‑traffic density, aircraft type, operational complexity, altitude band, and proximity to settlement exposure. Higher values indicate corridors or control zones with increased aviation‑hazard significance.
RoutesImportance_Rank_NATURAL_BREAKS
RoutesImportance_Rank_NATURAL_BREAKS_CLASS
Integer
4
10
0
A categorical hazard‑classification field derived by applying the Natural Breaks (Jenks) algorithm to the continuous Importance_Rank values assigned to aircraft flight routes. This method clusters similar values and maximises differences between classes to produce meaningful hazard groups (e.g., Low, Moderate, High, Very High). The resulting classes represent statistically significant breakpoints in route‑level aviation hazard.
RoutesImportance_Rank_NATURAL_BREAKS_RANGE
RoutesImportance_Rank_NATURAL_BREAKS_RANGE
String
255
0
0
Route_Importance_Class
Route_Importance_Class
Integer
4
10
0
A hazard‑category field representing grouped levels of aviation‑hazard importance derived from the underlying Importance_Rank values. Each class corresponds to a meaningful range of route‑level hazard exposure based on air‑traffic density, aircraft type, proximity to airports, altitude, and settlement‑exposure beneath the flight path
Route_Importance_Class_Severity
Route_Importance_Class_Severity
Integer
4
10
0
A severity‑rating field derived from the Route_Importance_Class values. The severity rating expresses how critical each class is in terms of aviation hazard, based on the combined influence of route hierarchy, aircraft density, altitude band, approach/departure operations, and ground‑exposure conditions. Severity levels provide a clear, hierarchical interpretation of aviation‑hazard magnitude.
Route_Importance_Class_Severity_Label
Route_Importance_Class_Severity_Label
String
255
0
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Shape.STArea()
Shape.STArea()
Double
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Shape.STLength()
Shape.STLength()
Double
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