ASIT

Aerodrome Safeguarding
& Inspection Tool

Instant, affordable ICAO-compliant aeronautical obstacle assessment. Annex 14, PANS-OPS and full PBN procedure evaluations in seconds — no installation, no login required.

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What is ASIT

Powerful. Fast. Precise.

Altitude Nexus ASIT is web-based 3D obstacle assessment software for ICAO-compliant safeguarding. Built for Civil Aviation Authorities, airports, wind farm operators and applicants, it automates ICAO Annex 14, PANS-OPS, BRA, custom surfaces and full PBN flight-procedure protection areas. It provides free multiple-point checks, world 3D terrain/building context and clear compliance results instantly without software installation, making aerodrome safeguarding accessible to aviation and non-aeronautical users.

No download required
No login required
Free surface generation & analysis
Launch ASIT Explore Features
Available Modules
OLS module
OLS
ICAO Annex 14

All Annex 14 OLS surfaces. Automatic infringement detection.

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RNP APCH module
RNP APCH
PANS-OPS

Non-precision RNP APCH obstacle clearance surfaces.

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OAS module
OAS
ILS & APV-Baro

ILS CAT I/II/III & APV-Baro obstacle assessment surfaces.

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OFS/OES module
OFS/OES
ICAO 2030

New ICAO OLS framework — mandatory by 2030.

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VSS/OCS module
VSS/OCS
Instrument

Visual Segment & Obstacle Clearance surfaces.

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PBN module
PBN
RNAV / RNP

Full ICAO‑compliant PBN procedures: holdings, racetrack, base‑turn, 45/180 turns, SIDs, en‑route, STARs, approach and missed approach.

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BRA module
BRA
Euro Doc 015

Navaid Building Restrictive Areas per ICAO Euro Doc 015.

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Custom
Any surface

Upload and evaluate any custom-defined protection surface.

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Platform Features
Multiple point analysis
Check any obstacle against all airport and procedure surfaces instantly (OLS / OAS / PANS-OPS / PBN / OFS / OES / BRA...).
Batch analysis — 1,000 obstacles
Upload a CSV and analyse an entire wind farm in one pass.
World 3D terrain checks
Review generated surfaces instantly against global terrain for quick first-pass safety checks.
3D buildings
Check surfaces against 3D building context for urban obstacle assessment (premium).
KML, DXF, AIXM & GeoJSON import/export
Exchange data with GIS tools and AutoCAD.
Audit log
Full record of evaluations and authorisations.
Save & share surfaces
Store configurations and share with your team (premium).
Professional PDF reports
Generate authority-ready reports in one click.
Embeddable Widget

How can Civil Aviation Authorities automate obstacle evaluations?

Are you a Civil Aviation Authority, Airport Operator, or Municipal Planning Department? Transition from manual bureaucracy to automated safety — define your protection surfaces (ICAO Annex 14, PANS-OPS, PBN, or any custom 3D surface) and empower citizens, developers and municipal users to submit antennas, buildings, cranes and other obstacles through an embeddable analysis widget directly on your website.

No download required
No login required
Free surface generation & analysis
Traditional Methods vs ASIT Widget
Traditional Process
ASIT Widget Method
Manual email requests & PDF forms
✓ Embeddable form on your CAA website
Days/weeks of CAD compliance review
✓ Instant authorisation or denial result
Disjointed paper trail
✓ Automated, permanent audit log
Experience the Speed — Try it Live
1
Select AirportSelect an airport from the dropdown — e.g. London Heathrow (EGLL).
2
Place Your ObstacleClick on the map or enter coordinates. Terrain elevation is auto-filled.
3
Enter Altitude & RunAdd your obstacle height above ground to the terrain elevation, then press Run Analysis.
4
Get Your ResultInstant result — clear or violation — with limiting surface, margin and downloadable PDF.
Obstacle Clearance Check — ASIT
Authority Plan Includes
  • ✓Embeddable widget with your own airport surfaces
  • ✓Official branded PDF reports with your authority logo
  • ✓Public "Verified Authority" badge on the ASIT directory
  • ✓Full audit log of every evaluation requested
  • ✓Instant web analysis plus world 3D terrain checks — no heavy desktop download
View Authority Pricing Request a Demo
See It in Action

Watch the
Full Walkthrough

From setting up your first aerodrome to running a complete ICAO Annex 14 OLS analysis and downloading an official PDF report — this walkthrough covers the entire workflow.

  • 1Setting up airport, runway & NAVAID data
  • 2Generating ICAO Annex 14 OLS surfaces
  • 3Running an obstacle analysis and reading results
  • 4Downloading the official PDF evaluation report
Try It Yourself →

Try ASIT today

No installation. No login. Start your analysis in seconds.

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